ammonia

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CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A leaving behind a billow of steam as it lifts off on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Tony Gray and Kevin O'Connell KSC-2011-5421

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, spa...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A leaving behind a billow of steam as it lifts off on its... More

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, the STS-135 crew members arrived aboard their T-38 jets at about 5:30 p.m. EDT to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training in preparation for the upcoming STS-135 mission. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4612

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kenn...

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, the STS-135 crew members arrived aboard their T-38 jets at about 5:30 p.m. EDT to participate in a launch coun... More

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle exit the Astronaut Crew Quarters in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. STS-135 Commander Chris Ferguson is followed by Pilot Doug Hurley and Mission Specialists Rex Walheim and Sandy Magnus. The astronauts, who will head to Launch Pad 39A aboard the silver Astrovan, are scheduled to lift off aboard space shuttle Atlantis at 11:26 a.m. EDT on July 8 for their mission to the International Space Station. STS-135 will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the orbiting outpost. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5204

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entr...

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle exit the Astronaut Crew Quarters in the Operations and Checkout Building... More

CAPE CANAVERAL, Fla. -- NASA photographer Sandra Joseph aims her remote camera tracker on space shuttle Atlantis at it lifts off from Launch Pad 39A at NASA's Kennedy Space Center in Florida beginning its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Sandra Joseph KSC-2011-5380

CAPE CANAVERAL, Fla. -- NASA photographer Sandra Joseph aims her remot...

CAPE CANAVERAL, Fla. -- NASA photographer Sandra Joseph aims her remote camera tracker on space shuttle Atlantis at it lifts off from Launch Pad 39A at NASA's Kennedy Space Center in Florida beginning its STS-1... More

CAPE CANAVERAL, Fla. -- The container that carries the Raffaello multi-purpose logistics module (MPLM), secured on its transportation vehicle, begins its journey from the Canister Rotation Facility to Launch Pad 39A at NASA's Kennedy Space Center in Florida. Once there, the canister will be lifted to the payload changeout room. The payload ground-handling mechanism then will be used to transfer Raffaello out of the canister into space shuttle Atlantis' payload bay. Next, the rotating service structure that protects the shuttle from the elements and provides access will be rotated back into place. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to lift off on Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frank Michaux KSC-2011-4484

CAPE CANAVERAL, Fla. -- The container that carries the Raffaello multi...

CAPE CANAVERAL, Fla. -- The container that carries the Raffaello multi-purpose logistics module (MPLM), secured on its transportation vehicle, begins its journey from the Canister Rotation Facility to Launch Pa... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis soars from Launch Pad 39A at NASA's Kennedy Space Center in Florida on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/ Kenny Allen KSC-2011-5454

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis soars from Launch Pad 3...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis soars from Launch Pad 39A at NASA's Kennedy Space Center in Florida on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Comm... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A leaving behind a billow of steam as it lifts off on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Tony Gray and Kevin O'Connell KSC-2011-5422

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, spa...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A leaving behind a billow of steam as it lifts off on its... More

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, STS-135 Pilot Doug Hurley pauses for a photo. The space shuttle Atlantis crew arrived at Kennedy at about 5:30 p.m. EDT to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training in preparation for the upcoming STS-135 mission. Atlantis and its crew is targeted to lift off on July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4609

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kenn...

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, STS-135 Pilot Doug Hurley pauses for a photo. The space shuttle Atlantis crew arrived at Kennedy at about 5:30 ... More

CAPE CANAVERAL, Fla. -- Taken from the Vehicle Assembly Building roof at NASA's Kennedy Space Center in Florida, this image shows the Press Site complex with a myriad of vehicles, satellite trucks and trailers belonging to invited guests and media for the launch of space shuttle Atlantis. Atlantis began its final flight, the STS-135 mission, to the International Space Station at 11:29 a.m. EDT on July 8. STS-135 will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jeffrey Marino KSC-2011-5267

CAPE CANAVERAL, Fla. -- Taken from the Vehicle Assembly Building roof ...

CAPE CANAVERAL, Fla. -- Taken from the Vehicle Assembly Building roof at NASA's Kennedy Space Center in Florida, this image shows the Press Site complex with a myriad of vehicles, satellite trucks and trailers ... More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson and Pilot Doug Hurley perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II jet that is modified to mimic the shuttle's handling during the final phase of landing. Ferguson and Hurley practice landings as part of standard procedure before space shuttle Atlantis' launch to the International Space Station. Atlantis and its crew are scheduled to lift off at 11:26 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Cory Huston KSC-2011-5036

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson and Pilot Dou...

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson and Pilot Doug Hurley perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) at the Shuttle Landing Facility at NASA's Kennedy Space Cent... More

CAPE CANAVERAL, Fla. -- On a cloudy and overcast day on Launch Pad 39A at NASA's Kennedy Space Center in Florida, workers monitor the progress of the rotating service structure (RSS) as it rolls away from space shuttle Atlantis. The RSS provides weather protection and access to the shuttle while it awaits liftoff. RSS "rollback" marks a major milestone in Atlantis' STS-135 mission countdown. Atlantis and its crew of four; Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim, are scheduled to lift off at 11:26 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-5131

CAPE CANAVERAL, Fla. -- On a cloudy and overcast day on Launch Pad 39A...

CAPE CANAVERAL, Fla. -- On a cloudy and overcast day on Launch Pad 39A at NASA's Kennedy Space Center in Florida, workers monitor the progress of the rotating service structure (RSS) as it rolls away from space... More

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle exit the Astronaut Crew Quarters in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. In the left row, STS-135 Pilot Doug Hurley is followed by Mission Specialist Sandy Magnus. In the right row, Commander Chris Ferguson is followed by Mission Specialist Rex Walheim. The astronauts, who will head to Launch Pad 39A aboard the silver Astrovan, are scheduled to lift off aboard space shuttle Atlantis at 11:26 a.m. EDT on July 8 for their mission to the International Space Station. STS-135 will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the orbiting outpost. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5202

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entr...

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle exit the Astronaut Crew Quarters in the Operations and Checkout Building... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, an overhead crane moves the Raffaello multi-purpose logistics module, or MPLM, toward a payload canister. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to lift off on space shuttle Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-4412

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, an overhead crane moves the Raffaello multi-purpose logistics module, or MPLM, toward a payload canist... More

CAPE CANAVERAL, Fla. -- In the Operations Support Building II at NASA's Kennedy Space Center in Florida, Space Shuttle Program and mission managers meet for the traditional Flight Readiness Review, a thorough assessment of preparations for the mission. Seen here are Space Shuttle Program Manager John Shannon (left) and International Space Station Program Manager Michael Suffredini (right). The June 28 meeting is designed to produce a number of key decisions about Atlantis' STS-135 mission, including the announcement of an official launch date. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: Jim Grossmann KSC-2011-4889

CAPE CANAVERAL, Fla. -- In the Operations Support Building II at NASA'...

CAPE CANAVERAL, Fla. -- In the Operations Support Building II at NASA's Kennedy Space Center in Florida, Space Shuttle Program and mission managers meet for the traditional Flight Readiness Review, a thorough a... More

CAPE CANAVERAL, Fla. -- During a simulated launch countdown the STS-135 crew pauses for a photo before climbing aboard the waiting Astrovan at NASA's Kennedy Space Center in Florida. As part of the Terminal Countdown Demonstration Test (TCDT), the crew members are driven to Kennedy's Launch Pad 39A and then strapped into space shuttle Atlantis to practice the steps that will be taken on launch day. From left are Mission Specialists Rex Walheim and Sandy Magnus, Pilot Doug Hurley and Commander Chris Ferguson. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4797

CAPE CANAVERAL, Fla. -- During a simulated launch countdown the STS-13...

CAPE CANAVERAL, Fla. -- During a simulated launch countdown the STS-135 crew pauses for a photo before climbing aboard the waiting Astrovan at NASA's Kennedy Space Center in Florida. As part of the Terminal Cou... More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson and Mission Specialist Sandy Magnus have touched down in a T-38 jet on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The STS-135 astronauts arrived at Kennedy about 2:30 p.m. EDT on July 4 for final preparations for space shuttle Atlantis' STS-135 mission to the International Space Station. Atlantis is scheduled to lift off on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-5009

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson and Mission S...

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson and Mission Specialist Sandy Magnus have touched down in a T-38 jet on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The... More

CAPE CANAVERAL, Fla. -- Liberty Star, one of NASA's solid rocket booster retrieval ships, tows a spent booster from space shuttle Atlantis' final launch, to Port Canaveral in Florida. The shuttle's two solid rocket booster casings and associated flight hardware are recovered in the Atlantic Ocean after every launch by Freedom Star and Liberty Star. The boosters impact the Atlantic about seven minutes after liftoff and the retrieval ships are stationed about 10 miles from the impact area at the time of splashdown. After the spent segments are processed, they will be transported to Utah, where they will be deserviced and stored, if needed. Atlantis began its final flight at 11:29 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also delivers the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit to the station. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5368

CAPE CANAVERAL, Fla. -- Liberty Star, one of NASA's solid rocket boost...

CAPE CANAVERAL, Fla. -- Liberty Star, one of NASA's solid rocket booster retrieval ships, tows a spent booster from space shuttle Atlantis' final launch, to Port Canaveral in Florida. The shuttle's two solid r... More

CAPE CANAVERAL, Fla. -- Sunrise at NASA's Kennedy Space Center in Florida finds space shuttle Atlantis on Launch Pad 39A after the payload canister carrying the Raffaello multi-purpose logistics module (MPLM) was lifted into the payload changeout room on the rotating service structure. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to lift off on space shuttle Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4505

CAPE CANAVERAL, Fla. -- Sunrise at NASA's Kennedy Space Center in Flor...

CAPE CANAVERAL, Fla. -- Sunrise at NASA's Kennedy Space Center in Florida finds space shuttle Atlantis on Launch Pad 39A after the payload canister carrying the Raffaello multi-purpose logistics module (MPLM) w... More

CAPE CANAVERAL, Fla. -- In Firing Room 4 of the Launch Control Center at NASA's Kennedy Space Center in Florida, launch team members monitor the countdown to the launch of space shuttle Atlantis on its STS-135 mission to the International Space Station. Above the space shuttle countdown clock are five orbiter tributes on display. The tributes feature major accomplishments and significant achievements made by each shuttle, as well as mission patches and processing milestones. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5278

CAPE CANAVERAL, Fla. -- In Firing Room 4 of the Launch Control Center ...

CAPE CANAVERAL, Fla. -- In Firing Room 4 of the Launch Control Center at NASA's Kennedy Space Center in Florida, launch team members monitor the countdown to the launch of space shuttle Atlantis on its STS-135 ... More

CAPE CANAVERAL, Fla. -- In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, STS-135 Mission Specialist Rex Walheim checks the fit of his launch-and-entry suit before during a simulated launch countdown. As part of the Terminal Countdown Demonstration Test (TCDT), the crew members are taken to Kennedy's Launch Pad 39A and strapped into space shuttle Atlantis to practice the steps that will be taken on launch day. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4788

CAPE CANAVERAL, Fla. -- In the Operations and Checkout Building at NAS...

CAPE CANAVERAL, Fla. -- In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, STS-135 Mission Specialist Rex Walheim checks the fit of his launch-and-entry suit before during a simu... More

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Atlantis' STS-135 crew members take part in a payload bay walkdown to check out the cargo secured in Atlantis' bay. Seen here inspecting the airlock is Commander Chris Ferguson. The astronauts are at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4736

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Cent...

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Atlantis' STS-135 crew members take part in a payload bay walkdown to check out the cargo secured in Atlantis' ... More

CAPE CANAVERAL, Fla. -- Battalion Chief David Seymour provides supervision while space shuttle Atlantis' STS-135 crew members participate in M113 armored personnel carrier training at NASA's Kennedy Space Center in Florida. Driving the M113 is Pilot Doug Hurley; seated are Mission Specialist Sandy Magnus (background right) and Commander Chris Ferguson. An M113 is kept at the foot of the launch pad in case an emergency exit from the launch pad is needed and every shuttle crew is trained on driving the vehicle before launch. The STS-135 crew is at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4666

CAPE CANAVERAL, Fla. -- Battalion Chief David Seymour provides supervi...

CAPE CANAVERAL, Fla. -- Battalion Chief David Seymour provides supervision while space shuttle Atlantis' STS-135 crew members participate in M113 armored personnel carrier training at NASA's Kennedy Space Cente... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, technicians in the payload changeout room have maneuvered space shuttle Atlantis' cargo, the Raffaello multi-purpose logistics module (MPLM) into the shuttle's payload bay using the payload ground-handling mechanism at Launch Pad 39A. The rotating service structure that protects the shuttle from the elements and provides access has been moved back into place. STS-135 Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim are targeted to lift off on Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4598

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, tec...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, technicians in the payload changeout room have maneuvered space shuttle Atlantis' cargo, the Raffaello multi-purpose logistics module (MPLM) in... More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim speaks to media during a question-and-answer session at NASA Kennedy Space Center's Launch Pad 39A in Florida. Space shuttle Atlantis' astronauts are at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4710

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim speaks ...

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim speaks to media during a question-and-answer session at NASA Kennedy Space Center's Launch Pad 39A in Florida. Space shuttle Atlantis' astronauts a... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A producing billows of smoke and steam as it lifts off on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Tony Gray and Tom Farrar KSC-2011-5411

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, spa...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A producing billows of smoke and steam as it lifts off on... More

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Center in Florida space shuttle Atlantis is reflected in a pond near the pad after the retraction of the rotating service structure (RSS). The structure provides weather protection and access to the shuttle while it awaits liftoff on the pad. RSS retract marks a major milestone in Atlantis' STS-135 mission countdown. Atlantis and its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim will lift off at 11:26 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: Jim Grossmann KSC-2011-5182

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Cent...

CAPE CANAVERAL, Fla. -- At Launch Pad 39A at NASA's Kennedy Space Center in Florida space shuttle Atlantis is reflected in a pond near the pad after the retraction of the rotating service structure (RSS). The s... More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson dons his launch-and-entry suit and helmet in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Ferguson is one of the final four astronauts to launch aboard a space shuttle. He is a retired U.S. Navy captain who already has logged nearly a month in space during two previous shuttle flights. STS-135 is scheduled to lift off aboard space shuttle Atlantis at 11:26 a.m. EDT on July 8 for a mission to the International Space Station. STS-135 will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the orbiting outpost. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5195

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson dons his laun...

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson dons his launch-and-entry suit and helmet in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Ferguson is one of the final... More

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, STS-135 Pilot Doug Hurley arrived aboard a T-38 jet. The STS-135 crew is at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training in preparation for the upcoming STS-135 mission. Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4615

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kenn...

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, STS-135 Pilot Doug Hurley arrived aboard a T-38 jet. The STS-135 crew is at Kennedy to participate in a launch ... More

CAPE CANAVERAL, Fla. -- Liberty Star, one of NASA's solid rocket booster retrieval ships, tows the right spent booster from space shuttle Atlantis' final launch, as it is taken to Port Canaveral in Florida. The shuttle's two solid rocket booster casings and associated flight hardware are recovered in the Atlantic Ocean after every launch by Freedom Star and Liberty Star. The boosters impact the Atlantic about seven minutes after liftoff and the retrieval ships are stationed about 10 miles from the impact area at the time of splashdown. After the spent segments are processed, they will be transported to Utah, where they will be deserviced and stored, if needed. Atlantis began its final flight at 11:29 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also delivers the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit to the station. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5519

CAPE CANAVERAL, Fla. -- Liberty Star, one of NASA's solid rocket boost...

CAPE CANAVERAL, Fla. -- Liberty Star, one of NASA's solid rocket booster retrieval ships, tows the right spent booster from space shuttle Atlantis' final launch, as it is taken to Port Canaveral in Florida. The... More

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3652

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its f...

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. ... More

CAPE CANAVERAL, Fla. -- In Firing Room 4 of the Launch Control Center at NASA's Kennedy Space Center in Florida, launch team members monitor the countdown to the launch of space shuttle Atlantis on its STS-135 mission to the International Space Station. Seen here is NASA Test Director Steve Payne. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5292

CAPE CANAVERAL, Fla. -- In Firing Room 4 of the Launch Control Center ...

CAPE CANAVERAL, Fla. -- In Firing Room 4 of the Launch Control Center at NASA's Kennedy Space Center in Florida, launch team members monitor the countdown to the launch of space shuttle Atlantis on its STS-135 ... More

CAPE CANAVERAL, Fla. -- A canister, carrying the Raffaello multi-purpose logistics module (MPLM) for space shuttle Atlantis' STS-135 mission to the International Space Station, arrives at Launch Pad 39A at NASA's Kennedy Space Center in Florida. The canister will be lifted to the payload changeout room. The payload ground-handling mechanism then will be used to transfer Raffaello out of the canister into Atlantis' payload bay. Next, the rotating service structure that protects the shuttle from the elements and provides access will be rotated back into place. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to lift off on Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-4453

CAPE CANAVERAL, Fla. -- A canister, carrying the Raffaello multi-purpo...

CAPE CANAVERAL, Fla. -- A canister, carrying the Raffaello multi-purpose logistics module (MPLM) for space shuttle Atlantis' STS-135 mission to the International Space Station, arrives at Launch Pad 39A at NASA... More

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley prepares to perform touch-and-go landings aboard one of two Shuttle Training Aircrafts (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II jet that is modified to mimic the shuttle's handling during the final phase of landing. Ferguson and Hurley will practice landings as part of standard training before space shuttle Atlantis' launch to the International Space Station. Atlantis and its crew are targeted to lift off July 8, to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-4658

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley prepares to perform ...

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley prepares to perform touch-and-go landings aboard one of two Shuttle Training Aircrafts (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Cent... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida media take advantage of the beautiful sunrise to snap photos of space shuttle Atlantis on Launch Pad 39A after the payload canister carrying the Raffaello multi-purpose logistics module (MPLM) was lifted into the payload changeout room on the rotating service structure. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to lift off on space shuttle Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4510

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida medi...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida media take advantage of the beautiful sunrise to snap photos of space shuttle Atlantis on Launch Pad 39A after the payload canister carrying the... More

CAPE CANAVERAL, Fla. -- In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, Mission Specialist Sandy Magnus checks the fit of her launch and landing suit. The STS-135 crew is at Kennedy to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training in preparation for the upcoming STS-135 mission. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4646

CAPE CANAVERAL, Fla. -- In the Operations and Checkout Building at NAS...

CAPE CANAVERAL, Fla. -- In the Operations and Checkout Building at NASA's Kennedy Space Center in Florida, Mission Specialist Sandy Magnus checks the fit of her launch and landing suit. The STS-135 crew is at K... More

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, STS-135 Mission Specialist Rex Walheim pauses for a photo. The space shuttle Atlantis crew members arrived at Kennedy at about 5:30 p.m. EDT to participate in a launch countdown dress rehearsal called the Terminal Countdown Demonstration Test (TCDT) and related training in preparation for the upcoming STS-135 mission. Atlantis and its crew is targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4607

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kenn...

CAPE CANAVERAL, Fla. -- At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, STS-135 Mission Specialist Rex Walheim pauses for a photo. The space shuttle Atlantis crew members arrived at K... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lifted by an overhead crane and moved into a high bay where it will be attached to its external fuel tank and solid rocket boosters which are already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3822

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lifted by an overhead crane and moved into a high bay where it will be attached to its ext... More

CAPE CANAVERAL, Fla. -- After sunset, lights glow on Launch Pad 39A at NASA's Kennedy Space Center in Florida as space shuttle Atlantis awaits delivery of the Raffaello multi-purpose logistics module (MPLM) in its transportation canister. Once delivered, the canister will be lifted to the payload changeout room. The payload ground-handling mechanism then will be used to transfer Raffaello out of the canister into Atlantis' payload bay. Next, the rotating service structure that protects the shuttle from the elements and provides access will be rotated back into place. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to lift off on Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frank Michaux KSC-2011-4479

CAPE CANAVERAL, Fla. -- After sunset, lights glow on Launch Pad 39A at...

CAPE CANAVERAL, Fla. -- After sunset, lights glow on Launch Pad 39A at NASA's Kennedy Space Center in Florida as space shuttle Atlantis awaits delivery of the Raffaello multi-purpose logistics module (MPLM) in ... More

CAPE CANAVERAL, Fla. -- During a tanking test on June 15 at Launch Pad 39A at NASA's Kennedy Space Center in Florida, there was an apparent liquid hydrogen leak in the main fuel valve in Atlantis' space shuttle main engine No. 3. Technicians now are replacing the suspect valve and a leak check of the valve and associated systems will be conducted. The work is expected to take about a week, which still would support Atlantis' targeted July 8 launch date. STS-135 Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim are targeted to lift off on space shuttle Atlantis July 8, taking with them the MPLM packed with supplies, logistics and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-4568

CAPE CANAVERAL, Fla. -- During a tanking test on June 15 at Launch Pad...

CAPE CANAVERAL, Fla. -- During a tanking test on June 15 at Launch Pad 39A at NASA's Kennedy Space Center in Florida, there was an apparent liquid hydrogen leak in the main fuel valve in Atlantis' space shuttle... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis' three main engines take center stage in this image as Atlantis is being moved to the Vehicle Assembly Building (VAB) from Orbiter Processing Faciity-1 at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3657

CAPE CANAVERAL, Fla. -- Shuttle Atlantis' three main engines take cent...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis' three main engines take center stage in this image as Atlantis is being moved to the Vehicle Assembly Building (VAB) from Orbiter Processing Faciity-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- On a cloudy and overcast day on Launch Pad 39A at NASA's Kennedy Space Center in Florida, workers prepare to roll the rotating service structure (RSS) away from space shuttle Atlantis. The RSS provides weather protection and access to the shuttle while it awaits liftoff. RSS "rollback" marks a major milestone in Atlantis' STS-135 mission countdown. Atlantis and its crew of four; Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim, are scheduled to lift off at 11:26 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-5122

CAPE CANAVERAL, Fla. -- On a cloudy and overcast day on Launch Pad 39A...

CAPE CANAVERAL, Fla. -- On a cloudy and overcast day on Launch Pad 39A at NASA's Kennedy Space Center in Florida, workers prepare to roll the rotating service structure (RSS) away from space shuttle Atlantis. T... More

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A producing billows of smoke and steam as it lifts off on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Sandra Joseph and Kevin O'Connell KSC-2011-5351

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, spa...

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Atlantis' main engines and solid rocket boosters ignite on Launch Pad 39A producing billows of smoke and steam as it lifts off on... More

CAPE CANAVERAL, Fla. -- Employees check out space shuttle Atlantis after it was uncovered on Launch Pad 39A at NASA's Kennedy Space Center in Florida following the move of the rotating service structure (RSS). The structure provides weather protection and access to the shuttle while it awaits liftoff on the pad. RSS "rollback" marks a major milestone in Atlantis' STS-135 mission countdown. Atlantis and its crew of four; Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandy Magnus and Rex Walheim, are scheduled to lift off at 11:26 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-5147

CAPE CANAVERAL, Fla. -- Employees check out space shuttle Atlantis aft...

CAPE CANAVERAL, Fla. -- Employees check out space shuttle Atlantis after it was uncovered on Launch Pad 39A at NASA's Kennedy Space Center in Florida following the move of the rotating service structure (RSS). ... More

CAPE CANAVERAL, Fla. -- During the bench review of systems and hardware in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, space shuttle Atlantis' STS-135 crew members get a close look at some of the equipment they'll use in space. The astronauts dressed in clean-room attire, known as "bunny suits" are (from right to left) Mission Specialists Sandy Magnus and Rex Walheim and Commander Chris Ferguson. The review is part of the Terminal Countdown Demonstration Test (TCDT) and related training. Atlantis and its crew are targeted to lift off July 8, taking with them the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing satellites and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-4848

CAPE CANAVERAL, Fla. -- During the bench review of systems and hardwar...

CAPE CANAVERAL, Fla. -- During the bench review of systems and hardware in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, space shuttle Atlantis' STS-135 crew members get a clo... More

CAPE CANAVERAL, Fla. -- High above the skies at NASA's Kennedy Space Center in Florida a Coast Guard helicopter keeps watch on and around the Atlantic Ocean including space shuttle Atlantis on its seaside launch pad awaiting liftoff on its STS-135 mission. Atlantis and its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim are scheduled to lift off at 11:26 a.m. EDT on July 8 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the International Space Station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: Ken Thornsley KSC-2011-5443

CAPE CANAVERAL, Fla. -- High above the skies at NASA's Kennedy Space C...

CAPE CANAVERAL, Fla. -- High above the skies at NASA's Kennedy Space Center in Florida a Coast Guard helicopter keeps watch on and around the Atlantic Ocean including space shuttle Atlantis on its seaside launc... More

CAPE CANAVERAL, Fla. -- On Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Atlantis travels upward on streams of flame as it lifts off on its STS-135 mission to the International Space Station. Atlantis with its crew of four; Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim, lifted off at 11:29 a.m. EDT on July 8, 2011 to deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts for the station. Atlantis also will fly the Robotic Refueling Mission experiment that will investigate the potential for robotically refueling existing satellites in orbit. In addition, Atlantis will return with a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 is the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Tony Gray and Tom Farrar KSC-2011-5414

CAPE CANAVERAL, Fla. -- On Launch Pad 39A at NASA's Kennedy Space Cent...

CAPE CANAVERAL, Fla. -- On Launch Pad 39A at NASA's Kennedy Space Center in Florida, space shuttle Atlantis travels upward on streams of flame as it lifts off on its STS-135 mission to the International Space S... More

CAPE CANAVERAL, Fla. -- Technicians transport a system that will investigate the potential for robotically refueling existing spacecraft in orbit to a low bay test cell in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Called the Robotic Refueling Mission RRM, the system will be processed to fly aboard space shuttle Atlantis on the STS-135 mission to the International Space Station. Atlantis and its STS-135 crew are scheduled to carry the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts to the space station. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-2369

CAPE CANAVERAL, Fla. -- Technicians transport a system that will inve...

CAPE CANAVERAL, Fla. -- Technicians transport a system that will investigate the potential for robotically refueling existing spacecraft in orbit to a low bay test cell in the Space Station Processing Facility... More

CAPE CANAVERAL, Fla. -- Technicians transport a system that will investigate the potential for robotically refueling existing spacecraft in orbit to a low bay test cell in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Called the Robotic Refueling Mission RRM, the system will be processed to fly aboard space shuttle Atlantis on the STS-135 mission to the International Space Station. Atlantis and its STS-135 crew are scheduled to carry the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts to the space station. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-2368

CAPE CANAVERAL, Fla. -- Technicians transport a system that will inve...

CAPE CANAVERAL, Fla. -- Technicians transport a system that will investigate the potential for robotically refueling existing spacecraft in orbit to a low bay test cell in the Space Station Processing Facility... More

CAPE CANAVERAL, Fla. -- Technicians transport a system that will investigate the potential for robotically refueling existing spacecraft in orbit to a low bay test cell in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. Called the Robotic Refueling Mission RRM, the system will be processed to fly aboard space shuttle Atlantis on the STS-135 mission to the International Space Station. Atlantis and its STS-135 crew are scheduled to carry the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts to the space station. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-2367

CAPE CANAVERAL, Fla. -- Technicians transport a system that will inve...

CAPE CANAVERAL, Fla. -- Technicians transport a system that will investigate the potential for robotically refueling existing spacecraft in orbit to a low bay test cell in the Space Station Processing Facility... More

CAPE CANAVERAL, Fla. -- Technicians move a system that will investigate the potential for robotically refueling existing spacecraft in orbit from a processing lab to a high bay in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The move prepares the system for its lift into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC), which will carry it into orbit. Called the Robotic Refueling Mission (RRM), the system will be processed to fly aboard space shuttle Atlantis on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-2546

CAPE CANAVERAL, Fla. -- Technicians move a system that will investigat...

CAPE CANAVERAL, Fla. -- Technicians move a system that will investigate the potential for robotically refueling existing spacecraft in orbit from a processing lab to a high bay in the Space Station Processing F... More

CAPE CANAVERAL, Fla. -- Technicians move a system that will investigate the potential for robotically refueling existing spacecraft in orbit from a processing lab to a high bay in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The move prepares the system for its lift into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC), which will carry it into orbit. Called the Robotic Refueling Mission (RRM), the system will be processed to fly aboard space shuttle Atlantis on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-2547

CAPE CANAVERAL, Fla. -- Technicians move a system that will investigat...

CAPE CANAVERAL, Fla. -- Technicians move a system that will investigate the potential for robotically refueling existing spacecraft in orbit from a processing lab to a high bay in the Space Station Processing F... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, technicians move a system that will investigate the potential for robotically refueling existing spacecraft in orbit into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC). Called the Robotic Refueling Mission (RRM), the system is being processed to fly aboard space shuttle Atlantis in the LMC on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-2610

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, technicians move a system that will investigate the potential for robotically refueling existing space... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a system that will investigate the potential for robotically refueling existing spacecraft in orbit will be moved into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC). Called the Robotic Refueling Mission (RRM), the system is being processed to fly aboard space shuttle Atlantis in the LMC on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-2603

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a system that will investigate the potential for robotically refueling existing spacecraft in orbit wi... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, technicians move a system that will investigate the potential for robotically refueling existing spacecraft in orbit into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC). Called the Robotic Refueling Mission (RRM), the system is being processed to fly aboard space shuttle Atlantis in the LMC on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-2608

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, technicians move a system that will investigate the potential for robotically refueling existing space... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a system that will investigate the potential for robotically refueling existing spacecraft in orbit is installed in the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC). Called the Robotic Refueling Mission (RRM), the system is being processed to fly aboard space shuttle Atlantis in the LMC on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-2613

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a system that will investigate the potential for robotically refueling existing spacecraft in orbit is... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a system that will investigate the potential for robotically refueling existing spacecraft in orbit will be moved into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC). Called the Robotic Refueling Mission (RRM), the system is being processed to fly aboard space shuttle Atlantis in the LMC on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-2604

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, a system that will investigate the potential for robotically refueling existing spacecraft in orbit wi... More

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, technicians prepare to move a system that will investigate the potential for robotically refueling existing spacecraft in orbit into the Lightweight Multi-Purpose Experiment Support Structure Carrier (LMC). Called the Robotic Refueling Mission (RRM), the system is being processed to fly aboard space shuttle Atlantis in the LMC on the STS-135 mission to the International Space Station. Also going up will be the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The mission also will return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ben Smegelsky KSC-2011-2606

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NA...

CAPE CANAVERAL, Fla. -- In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, technicians prepare to move a system that will investigate the potential for robotically refueling exi... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participates in a crew equipment interface test, or CEIT, in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The purpose of CEIT is for flight crew members to become familiar with the hardware and tools they will work with in space. Standing in front of the Raffaello multi-purpose logistics module, which will be packed with supplies, logistics and spare parts for their mission to the International Space Station, are, from left, Pilot Doug Hurley, Mission Specialists Rex Walheim and Sandy Magnus, and Commander Chris Ferguson. STS-135 also will return a failed ammonia pump module on the Lightweight Multi-Purpose Experiment Support Structure Carrier, or LMC, to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-3254

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participa...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participates in a crew equipment interface test, or CEIT, in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The pur... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participates in a crew equipment interface test, or CEIT, in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The purpose of CEIT is for flight crew members to become familiar with the hardware and tools they will work with in space. Mission Specialist Sandy Magnus performs some hands-on tasks while Mission Specialist Rex Walheim, left, Commander Chris Ferguson, right, and technicians observe. STS-135 will carry the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts to the International Space Station. STS-135 also will return a failed ammonia pump module on the Lightweight Multi-Purpose Experiment Support Structure Carrier, or LMC, to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-3252

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participa...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participates in a crew equipment interface test, or CEIT, in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The pur... More

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participates in a crew equipment interface test, or CEIT, in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The purpose of CEIT is for flight crew members to become familiar with the hardware and tools they will work with in space. Here, a technician shows Mission Specialist Rex Walheim the Lightweight Multi-Purpose Experiment Support Structure Carrier, or LMC, which will be used to return a failed ammonia pump module from the International Space Station. Crews on Earth will examine the failure mechanism to help NASA improve pump designs for future systems. STS-135 also will carry the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jim Grossmann KSC-2011-3255

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participa...

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis' STS-135 crew participates in a crew equipment interface test, or CEIT, in the Space Station Processing Facility at NASA's Kennedy Space Center in Florida. The pur... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis is prepared for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3653

CAPE CANAVERAL, Fla. -- Shuttle Atlantis is prepared for its final pla...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis is prepared for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Th... More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialists Sandra Magnus and Rex Walheim, pause for a photo while watching shuttle Atlantis' rollover from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3671

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialists Sandra Magnus and ...

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialists Sandra Magnus and Rex Walheim, pause for a photo while watching shuttle Atlantis' rollover from Orbiter Processing Facility-1 to the Vehicle Assembly Building... More

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3640

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its f...

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move ca... More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandra Magnus talks with technicians in Orbiter Processing Facility-1 prior shuttle Atlantis' final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Magnus, along with Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialist Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3639

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandra Magnus talks...

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandra Magnus talks with technicians in Orbiter Processing Facility-1 prior shuttle Atlantis' final planned move to the Vehicle Assembly Building at NASA's Ken... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3648

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move ...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis is parked in the transfer aisle in the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. A large yellow sling device (foreground) will be used to lift Atlantis into a high bay for joining to the solid rocket boosters and external tank already installed on a mobile launcher platform. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3679

CAPE CANAVERAL, Fla. -- Shuttle Atlantis is parked in the transfer ais...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis is parked in the transfer aisle in the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. A large yellow sling device (foreground) will be used t... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3655

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter P...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. ... More

CAPE CANAVERAL, Fla. -- Center Director Bob Cabana (right) speaks with a worker in Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, as shuttle Atlantis is being prepared for it move to the Vehicle Assembly Building (VAB). The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3666

CAPE CANAVERAL, Fla. -- Center Director Bob Cabana (right) speaks with...

CAPE CANAVERAL, Fla. -- Center Director Bob Cabana (right) speaks with a worker in Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, as shuttle Atlantis is being prepared for it move to t... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis enters the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3678

CAPE CANAVERAL, Fla. -- Shuttle Atlantis enters the transfer aisle of ...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis enters the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in process... More

CAPE CANAVERAL, Fla. -- Members of the media and Kennedy workers snap photos of shuttle Atlantis as it makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3658

CAPE CANAVERAL, Fla. -- Members of the media and Kennedy workers snap ...

CAPE CANAVERAL, Fla. -- Members of the media and Kennedy workers snap photos of shuttle Atlantis as it makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at N... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3646

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter P...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move call... More

CAPE CANAVERAL, Fla. -- Members of the media and NASA Kennedy Space Center workers snap photos of the STS-135 crew members who are at the center to watch shuttle Atlantis make its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building. From left, are Mission Specialist Rex Walheim, Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialist Sandra Magnus. The move called "rollover" is a major milestone in processing for the STS-135 mission, which will deliver the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts to the International Space Station. Targeted to launch in early July, STS-135 also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3662

CAPE CANAVERAL, Fla. -- Members of the media and NASA Kennedy Space Ce...

CAPE CANAVERAL, Fla. -- Members of the media and NASA Kennedy Space Center workers snap photos of the STS-135 crew members who are at the center to watch shuttle Atlantis make its final planned move from Orbite... More

CAPE CANAVERAL, Fla. -- The STS-135 crew members pose for a photo in front of shuttle Atlantis, which is making its final planned trek from Orbiter Processing Facility-1 to the Vehicle Assembly Building. From left, are Mission Specialist Rex Walheim, Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialist Sandra Magnus. The move called "rollover" is a major milestone in processing for the STS-135 mission, which will deliver the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts to the International Space Station. Targeted to launch in early July, STS-135 also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3664

CAPE CANAVERAL, Fla. -- The STS-135 crew members pose for a photo in f...

CAPE CANAVERAL, Fla. -- The STS-135 crew members pose for a photo in front of shuttle Atlantis, which is making its final planned trek from Orbiter Processing Facility-1 to the Vehicle Assembly Building. From l... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move, or rollover, into the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3676

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move,...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move, or rollover, into the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. Th... More

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3638

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its f...

CAPE CANAVERAL, Fla. -- Technicians prepare shuttle Atlantis for its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move ca... More

CAPE CANAVERAL, Fla. -- Outside of Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, Kennedy employees and media gather to view shuttle Atlantis as it is being moved to the Vehicle Assembly Building (VAB). The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3668

CAPE CANAVERAL, Fla. -- Outside of Orbiter Processing Facility-1 at NA...

CAPE CANAVERAL, Fla. -- Outside of Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, Kennedy employees and media gather to view shuttle Atlantis as it is being moved to the Vehicle Assemb... More

CAPE CANAVERAL, Fla. -- Kennedy employees hold up a "We're Behind You, Atlantis" banner after shuttle Atlantis' move, or rollover, to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3686

CAPE CANAVERAL, Fla. -- Kennedy employees hold up a "We're Behind You,...

CAPE CANAVERAL, Fla. -- Kennedy employees hold up a "We're Behind You, Atlantis" banner after shuttle Atlantis' move, or rollover, to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florid... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3642

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter P...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move call... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move, or rollover, into the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3685

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move,...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move, or rollover, into the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. ... More

CAPE CANAVERAL, Fla. -- Members of the media and Kennedy workers snap photos of shuttle Atlantis as it makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3674

CAPE CANAVERAL, Fla. -- Members of the media and Kennedy workers snap ...

CAPE CANAVERAL, Fla. -- Members of the media and Kennedy workers snap photos of shuttle Atlantis as it makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at N... More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson, Mission Specialists Sandra Magnus and Rex Walheim, and Pilot Doug Hurley pause for a photo while watching Atlantis' rollover from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3659

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson, Mission Spec...

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson, Mission Specialists Sandra Magnus and Rex Walheim, and Pilot Doug Hurley pause for a photo while watching Atlantis' rollover from Orbiter Processing Fac... More

CAPE CANAVERAL, Fla. -- Workers watch as shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3643

CAPE CANAVERAL, Fla. -- Workers watch as shuttle Atlantis slowly backs...

CAPE CANAVERAL, Fla. -- Workers watch as shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Flori... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3649

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move ...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3647

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter P...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis slowly backs out of Orbiter Processing Facility-1 during its final planned move to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move call... More

CAPE CANAVERAL, Fla. -- Workers and the crew of STS-135 hold up a "We're Behind You, Atlantis" banner during the final planned move of shuttle Atlantis from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3650

CAPE CANAVERAL, Fla. -- Workers and the crew of STS-135 hold up a "We'...

CAPE CANAVERAL, Fla. -- Workers and the crew of STS-135 hold up a "We're Behind You, Atlantis" banner during the final planned move of shuttle Atlantis from Orbiter Processing Facility-1 to the Vehicle Assembly... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3651

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move ...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move from Orbiter Processing Facility-1 to the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The move called "rollover" is... More

CAPE CANAVERAL, Fla. -- Workers monitor the progress of shuttle Atlantis as it is backing out of Orbiter Processing Faciity-1 on its final planned move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3669

CAPE CANAVERAL, Fla. -- Workers monitor the progress of shuttle Atlant...

CAPE CANAVERAL, Fla. -- Workers monitor the progress of shuttle Atlantis as it is backing out of Orbiter Processing Faciity-1 on its final planned move to the Vehicle Assembly Building (VAB) at NASA's Kennedy S... More

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move, or rollover, into the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3675

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move,...

CAPE CANAVERAL, Fla. -- Shuttle Atlantis makes its final planned move, or rollover, into the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. ... More

Cape Canaveral, Fla. -- Media and Kennedy employees snap photos of shuttle Atlantis as it makes its final planned move to the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Dimitri Gerondidakis KSC-2011-3684

Cape Canaveral, Fla. -- Media and Kennedy employees snap photos of shu...

Cape Canaveral, Fla. -- Media and Kennedy employees snap photos of shuttle Atlantis as it makes its final planned move to the Vehicle Assembly Building (VAB) from Orbiter Processing Facility-1 at NASA's Kennedy... More

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, STS-135 Pilot Doug Hurley is on hand to watch Atlantis' rollover from Orbiter Processing Facility-1 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. The move called "rollover" is a major milestone in processing for the STS-135 mission to the International Space Station. Inside the VAB, the shuttle will be attached to its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are targeted to launch in early July, taking with them the Raffaello multipurpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Frankie Martin KSC-2011-3654

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Ken...

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, STS-135 Pilot Doug Hurley is on hand to watch Atlantis' rollover from Orbiter Processing Facility-1 to the Veh... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lifted by an overhead crane and moved into a high bay where it will be attached to its external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-3805

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lifted by an overhead crane and moved into a high bay where it will be attached to its ext... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers disconnect the transporter from shuttle Atlantis. An overhead crane then will lift the spacecraft into a high bay where it will be attached to its external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3787

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers disconnect the transporter from shuttle Atlantis. An overhead crane then will lift the spacecraft into... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is ready to be lifted by an overhead crane and moved into a high bay where it will be attached to its external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Ken Thornsley KSC-2011-3799

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is ready to be lifted by an overhead crane and moved into a high bay where it will be attach... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lowered onto the mobile launcher platform where it will be joined with its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-3820

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lowered onto the mobile launcher platform where it will be joined with its external fuel t... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lowered onto the mobile launcher platform where it will be joined with its external fuel tank and solid rocket boosters. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-3818

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lowered onto the mobile launcher platform where it will be joined with its external fuel t... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lowered by an overhead crane into a high bay where it will be attached to its external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Troy Cryder KSC-2011-3810

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, shuttle Atlantis is lowered by an overhead crane into a high bay where it will be attached to its external fue... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers attach an overhead crane to shuttle Atlantis. The crane will lift the spacecraft into a high bay where it will be attached to the waiting external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3767

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers attach an overhead crane to shuttle Atlantis. The crane will lift the spacecraft into a high bay where... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers attach an overhead crane to shuttle Atlantis. The crane will lift the spacecraft into a high bay where it will be attached to the waiting external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch mid July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3763

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers attach an overhead crane to shuttle Atlantis. The crane will lift the spacecraft into a high bay where... More

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers disconnect the transporter from shuttle Atlantis. An overhead crane then will lift the spacecraft into a high bay where it will be attached to its external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3785

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Ken...

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers disconnect the transporter from shuttle Atlantis. An overhead crane then will lift the spacecraft into... More

CAPE CANAVERAL, Fla. -- In Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, an overhead crane slowly lifts shuttle Atlantis off its transporter. The spacecraft then will be positioned vertically in a high bay where it will be attached to its external fuel tank and solid rocket boosters already on the mobile launcher platform. Commander Chris Ferguson, Pilot Doug Hurley and Mission Specialists Sandra Magnus and Rex Walheim are expected to launch in mid-July, taking with them the Raffaello multi-purpose logistics module packed with supplies, logistics and spare parts. The STS-135 mission also will fly a system to investigate the potential for robotically refueling existing spacecraft and return a failed ammonia pump module to help NASA better understand the failure mechanism and improve pump designs for future systems. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Jack Pfaller KSC-2011-3788

CAPE CANAVERAL, Fla. -- In Vehicle Assembly Building at NASA's Kennedy...

CAPE CANAVERAL, Fla. -- In Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, an overhead crane slowly lifts shuttle Atlantis off its transporter. The spacecraft then will be positioned vertic... More

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