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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-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. -- Shuttle Launch Director Mike Leinbach proudly displays a space shuttle Atlantis banner for STS-135 Commander Chris Ferguson, front right, and Pilot Doug Hurley. Four astronauts brought Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5678

CAPE CANAVERAL, Fla. -- Shuttle Launch Director Mike Leinbach proudly displays a space shuttle Atlantis banner for STS-135 Commander Chris Ferguson, front right, and Pilot Doug Hurley. Four astronauts brought A 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-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. -- 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 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

Secretary of Defense hosts award ceremony for four Astronauts. Three military, Colonel Gordon C. Fullerton, USAF, a Marine Corps Colonel and a Navy Captain receive the Defense Superior Service Medal and the civilian also receives a medal (?). Other attendees include: Deputy Secretary of Defense, Frank C. Carlucci; Secretary of the Air Force, Verne Orr; General Charles A. Gabriel, USAF, CHIEF of STAFF and General Robert II. Barrow, Commandant of the Marine Corps. Colonel Fullerton was on the Space Shuttle, STS-03, crew

The original finding aid described this photograph as: Base: Pentagon State: District Of Columbia (DC) Country: United States Of America (USA) Scene Camera Operator: Robert D. Ward Release Status: Released More

Secretary of Defense hosts award ceremony for four Astronauts. Three military, Colonel Gordon C. Fullerton, USAF, a Marine Corps Colonel and a Navy Captain receive the Defense Superior Service Medal and the civilian also receives a medal (?). Other attendees include: Deputy Secretary of Defense, Frank C. Carlucci; Secretary of the Air Force, Verne Orr; General Charles A. Gabriel, USAF, CHIEF of STAFF and General Robert II. Barrow, Commandant of the Marine Corps. Colonel Fullerton was on the Space Shuttle, STS-03, crew

The original finding aid described this photograph as: Base: Pentagon State: District Of Columbia (DC) Country: United States Of America (USA) Scene Camera Operator: Robert D. Ward Release Status: Released More

Secretary of Defense hosts award ceremony for four Astronauts. Three military, Colonel Gordon C. Fullerton, USAF, a Marine Corps Colonel and a Navy Captain receive the Defense Superior Service Medal and the civilian also receives a medal (?). Other attendees include: Deputy Secretary of Defense, Frank C. Carlucci; Secretary of the Air Force, Verne Orr; General Charles A. Gabriel, USAF, CHIEF of STAFF and General Robert II. Barrow, Commandant of the Marine Corps. Colonel Fullerton was on the Space Shuttle, STS-03, crew

The original finding aid described this photograph as: Base: Pentagon State: District Of Columbia (DC) Country: United States Of America (USA) Scene Camera Operator: Robert D. Ward Release Status: Released More

OFFICIAL STS-5 CREW PATCH/INSIGNIA

S82-35627 (20 Aug. 1982) --- This is the official crew patch for the fifth (note five points of the star) NASA Space Transportation System (STS-5) flight, scheduled for November of this year. The STS-5 flight f More

Space Shuttle Columbia, Crew members on middeck

STS005-04-124 (14 Nov. 1982) --- Three members of the four-man STS-5 crew demonstrate the zero-gravity environment aboard the Earth-orbiting space shuttle Columbia. Astronaut Vance D. Brand, mission commander, More

Crewmember working on the spacelab Generic Bioprocessing Apparatus, rack #10.

STS050-02-036 (25 June-9 July 1992) --- Astronaut Carl J. Meade, mission specialist, operates the Generic Bioprocessing Apparatus (GBA) in the Science Module aboard the Space Shuttle Columbia. Meade was joined More

Special ratchet tool to be used by the STS-61 crew for HST repair

S93-35367 (Nov 1993) --- A close-up view of the special ratchet tool to be used by the STS-61 astronauts assigned to perform servicing of the Hubble Space Telescope (HST) in December of this year. Four astrona More

Flight controller Kevin McCluney monitors STS-61 astronauts during EVA

STS61-S-093 (5 Dec 1993) --- Flight controller Kevin McCluney monitors the televised activity of astronauts F. Story Musgrave and Jeffrey A. Hoffman. The veteran astronauts were performing the first extravehic More

Hubble Space Telescope is berthed in Endeavour's payload bay after capture

STS061-79-087 (4 Dec. 1993) --- The Hubble Space Telescope (HST), backdropped over Madagascar, is berthed in the space shuttle Endeavour's cargo bay following its capture by the STS-61 astronauts. The crew used More

Earth observations taken during STS-61 mission

STS061-79-086 (4 Dec 1993) --- The Hubble Space Telescope (HST), backdropped over Madagascar, is berthed in the Space Shuttle Endeavour's cargo bay following its capture by the STS-61 astronauts. The crew used More

Mission control activity during STS-61 EVA-1

STS061-S-102 (5 Dec. 1993) --- Flight controllers Harry Black (left foreground) and Kevin McCluney (right foreground) monitor the televised activity of two space walkers during the first STS-61 extravehicular a More

Space Shuttle Atlantis, Medical operations in Spacelab

STS071-102-027 (27 June - 7 July 1995) --- Onboard the Spacelab Science Module in the Space Shuttle Atlantis' cargo bay, four astronauts and a cosmonaut team up to collect data from Mir-18 crew members who have More

STS-82 Discovery crew familiarize themselves with hardware for flight

KENNEDY SPACE CENTER, FLORIDA STS-82 PREPARATIONS VIEW --- In the Kennedy Space Center (KSC) Vertical Processing Facility (VPF), the STS-82 crew members have the opportunity for a "hands-on" preview of some of More

KENNEDY SPACE CENTER, FLA. -- In this closeup viewed from above, former Apollo astronauts (seated, left to right) Neil A. Armstrong and Edwin "Buzz" Aldrin who flew on Apollo 11, the launch to the moon; Gene Cernan, who flew on Apollo 10 and 17; and Walt Cunningham, who flew on Apollo 7, answer questions from the media during a press conference in the Apollo/Saturn V Center. At left is Lisa Malone, chief of KSC's Media Services branch, who monitored the session. In the background are the original computer consoles used in the firing room during the Apollo program. They are now part of the reenactment of the Apollo launches in the exhibit at the center. The four astronauts were at KSC for the 30th anniversary of the Apollo 11 launch and moon landing, July 16 and July 20, 1969 KSC-99pp0849

KENNEDY SPACE CENTER, FLA. -- In this closeup viewed from above, former Apollo astronauts (seated, left to right) Neil A. Armstrong and Edwin "Buzz" Aldrin who flew on Apollo 11, the launch to the moon; Gene Ce More

KENNEDY SPACE CENTER, FLA. -- At a media conference in the Apollo/Saturn V Center, former Apollo astronaut Gene Cernan, who flew on Apollo 10 and 17, makes a point in a comment for the press. Joining him in the conference are other Apollo astronauts (left) Neil A. Armstrong and Edwin "Buzz" Aldrin, who both flew on Apollo 11, the launch to the moon; and (right) Walt Cunningham, who flew on Apollo 7. The four astronauts were at KSC for the 30th anniversary of the Apollo 11 launch and moon landing, July 16 and July 20, 1969. Neil Armstrong was the first man to set foot on the moon KSC-99pp0847

KENNEDY SPACE CENTER, FLA. -- At a media conference in the Apollo/Saturn V Center, former Apollo astronaut Gene Cernan, who flew on Apollo 10 and 17, makes a point in a comment for the press. Joining him in the More

KENNEDY SPACE CENTER, FLA. -- At a media conference in the Apollo/Saturn V Center, former Apollo astronaut Edwin "Buzz" Aldrin, who flew on Apollo 11, the launch to the moon, demonstrates a point in his comment for the press. Joining him in the conference are other Apollo astronauts Neil A. Armstrong (left), who also flew on Apollo 11 and was the first man to set foot on the moon; Gene Cernan (right), who flew on Apollo 10 and 17; and Walt Cunningham (back to camera), who flew on Apollo 7. In the background is Lisa Malone, chief of KSC's Media Services branch, who monitored the session. The four astronauts were at KSC for the 30th anniversary of the Apollo 11 launch and moon landing, July 16 and July 20, 1969 KSC-99pp0846

KENNEDY SPACE CENTER, FLA. -- At a media conference in the Apollo/Saturn V Center, former Apollo astronaut Edwin "Buzz" Aldrin, who flew on Apollo 11, the launch to the moon, demonstrates a point in his comment More

KENNEDY SPACE CENTER, FLA. -- Photographers and cameramen fill the stands of the Apollo/Saturn V Center for a press conference with former Apollo astronauts (seated, left to right) Neil A. Armstrong and Edwin "Buzz" Aldrin who flew on Apollo 11, the launch to the moon; Gene Cernan, who flew on Apollo 10 and 17; and Walt Cunningham, who flew on Apollo 7. At left is Lisa Malone, chief of KSC's Media Services branch, who monitored the session. The four astronauts were at KSC for the 30th anniversary of the Apollo 11 launch and moon landing, July 16 and July 20, 1969. Neil Armstrong was the first man to set foot on the moon KSC-99pp0845

KENNEDY SPACE CENTER, FLA. -- Photographers and cameramen fill the stands of the Apollo/Saturn V Center for a press conference with former Apollo astronauts (seated, left to right) Neil A. Armstrong and Edwin " More

KENNEDY SPACE CENTER, FLA. -- Viewed from above, former Apollo astronauts (seated, left to right) Neil A. Armstrong and Edwin "Buzz" Aldrin who flew on Apollo 11, the launch to the moon; Gene Cernan, who flew on Apollo 10 and 17; and Walt Cunningham, who flew on Apollo 7, answer questions from the media during a press conference in the Apollo/Saturn V Center. At left is Lisa Malone, chief of KSC's Media Services branch, who monitored the session. In the background are the original computer consoles used in the firing room during the Apollo program. They are now part of the reenactment of the Apollo launches in the exhibit at the center. The four astronauts were at KSC for the 30th anniversary of the Apollo 11 launch and moon landing, July 16 and July 20, 1969 KSC-99pp0848

KENNEDY SPACE CENTER, FLA. -- Viewed from above, former Apollo astronauts (seated, left to right) Neil A. Armstrong and Edwin "Buzz" Aldrin who flew on Apollo 11, the launch to the moon; Gene Cernan, who flew o More

Original photo and caption dated August 14, 1995: <i>"KSC plant physiologist Dr. Gary Stutte harvests a potato grown in the Biomass Production Chamber of the Controlled environment Life Support system (CELSS) in Hangar L at Cape Canaveral Air Station. During a 418-day "human rated" experiment, potato crops grown in the chamber provided the equivalent of a continuous supply of the oxygen for one astronaut, along with 55 percent of that long-duration space flight crew member's caloric food requirements and enough purified water for four astronauts while absorbing their expelled carbon dioxide. The experiment provided data that will help demonstarte the feasibility of the CELSS operating as a bioregenerative life support system for lunar and deep-space missions that can operate independently without the need to carry consumables such as air, water and food, while not requiring the expendable air and water system filters necessary on today's human-piloted spacecraft."</i KSC-95pc1197

Original photo and caption dated August 14, 1995: <i>"KSC plant physiologist Dr. Gary Stutte harvests a potato grown in the Biomass Production Chamber of the Controlled environment Life Support system (CELSS) i More

Original photo and caption dated August 14, 1995: <i>"KSC plant physiologist Dr. Gary Stutte (right) and Cheryl Mackowiak harvest potatoes grown in the Biomass Production Chamber of the Controlled Enviornment Life Support System (CELSS in Hangar L at Cape Canaveral Air Station. During a 418-day "human rated" experiment, potato crops grown in the chamber provided the equivalent of a continuous supply of the oxygen for one astronaut, along with 55 percent of that long-duration space flight crew member's caloric food requirements and enough purified water for four astronauts while absorbing their expelled carbon dioxide. The experiment provided data that will help demonstarte the feasibility of the CELSS operating as a bioregenerative life support system for lunar and deep-space missions that can operate independently without the need to carry consumables such as air, water and food, while not requiring the expendable air and water system filters necessary on today's human-piloted spacecraft."</i KSC-95pc1196

Original photo and caption dated August 14, 1995: <i>"KSC plant physiologist Dr. Gary Stutte (right) and Cheryl Mackowiak harvest potatoes grown in the Biomass Production Chamber of the Controlled Enviornment L More

JOHNSON SPACE CENTER, HOUSTON, TX -- (JSC STS111-5-002) -- These four astronauts are the prime crew for NASA's STS-111 mission. Astronaut Kenneth D. Cockrell (front right) is mission commander, and astronaut Paul S. Lockhart (front left) is pilot. Astronauts Philippe Perrin (rear left), representing the French Space Agency, and Franklin R. Chang-Diaz are mission specialists, assigned to extravehicular activity (EVA) work on the International Space Station (ISS). Additionally, this crew will drop off the Expedition Five crew members at the orbital outpost, and it will bring back the Expedition Four trio at mission's end KSC-02pd0633

JOHNSON SPACE CENTER, HOUSTON, TX -- (JSC STS111-5-002) -- These four astronauts are the prime crew for NASA's STS-111 mission. Astronaut Kenneth D. Cockrell (front right) is mission commander, and astronaut More

JOHNSON SPACE CENTER, HOUSTON, TEXAS. -- (STS113-S-002) -- These four astronauts are in training for the STS-113 mission, scheduled this autumn to take up the sixth crew to the International Space Station (ISS) and bring back the members of the fifth expedition, as well as perform a variety of other duties. In front are astronauts James D. Wetherbee (right) and Paul S. Lockhart, commander and pilot, respectively. Attired in training versions of the extravehicular mobility unit (EMU) space suits are astronauts Michael E. Lopez-Alegria (left) and John B. Herrington, both mission specialists. KSC-02pd1534

JOHNSON SPACE CENTER, HOUSTON, TEXAS. -- (STS113-S-002) -- These four astronauts are in training for the STS-113 mission, scheduled this autumn to take up the sixth crew to the International Space Station (IS More

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (STS114-S-002) -- These four astronauts are in training for the STS-114 mission. Astronauts Eileen M. Collins, mission commander, and James M. Kelly, pilot, flank the two mission specialists -- astronauts Stephen K. Robinson (second from left) and Soichi Noguchi -- who are assigned to spacewalk duty to perform work on the International Space Station. Noguchi represents the Japanese Space agency.

JOHNSON SPACE CENTER, HOUSTON, TEXAS -- (STS114-S-002) -- These four astronauts are in training for the STS-114 mission. Astronauts Eileen M. Collins, mission commander, and James M. Kelly, pilot, flank the two More

JOHNSON SPACE CENTER, Houston, Texas --- STS135-S-002 --- Attired in training versions of their shuttle launch and entry suits, these four astronauts take a break from training to pose for the STS-135 crew portrait. Pictured are NASA astronauts Chris Ferguson (center right), commander; Doug Hurley (center left), pilot; Rex Walheim and Sandy Magnus, both mission specialists. Photo credit: NASA or National Aeronautics and Space Administration KSC-2011-4287

JOHNSON SPACE CENTER, Houston, Texas --- STS135-S-002 --- Attired in training versions of their shuttle launch and entry suits, these four astronauts take a break from training to pose for the STS-135 crew port More

JSC2011-E-040209 (10 March 2011) --- NASA astronaut Chris Ferguson, STS-135 commander, takes a photo of himself with astronaut Mike Fossum before the crew of the final shuttle mission trains March 10, 2011 in the Neutral Buoyancy Laboratory near the Johnson Space Center in Houston. Fossum will fly to the International Space Station aboard a Russian Soyuz spacecraft scheduled for launch in May and will serve as flight engineer for Expedition 28 and as commander for Expedition 29. Since the crew of the final shuttle mission will consist of only four astronauts, the ISS crew will perform the mission's single scheduled spacewalk, and the crew of STS-135 will function in support of the EVA, with Rex Walheim serving as the internally-based 'quarterback' for the spacewalk. Photo credit: NASA Photo/Houston Chronicle, Smiley N. Pool STS_135_NBL

JSC2011-E-040209 (10 March 2011) --- NASA astronaut Chris Ferguson, STS-135 commander, takes a photo of himself with astronaut Mike Fossum before the crew of the final shuttle mission trains March 10, 2011 in More

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley waves as he dons his launch-and-entry suit and helmet in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Hurley is one of the final four astronauts to launch aboard a space shuttle. He is a colonel in the U.S. Marine Corps with one shuttle mission under his belt -- STS-127 aboard Endeavour. 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-2011-5198

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley waves as he dons his launch-and-entry suit and helmet in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Hurley is one of the fi More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandy Magnus dons her launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Magnus is one of the final four astronauts to launch aboard a space shuttle. She has launched aboard a shuttle twice and most recently spent time aboard the International Space Station as an Expedition 18 crew member from November 2008 to March 2009. 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-2011-5186

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandy Magnus dons her launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Magnus is one of the final four More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandy Magnus puts on the finishing touches of her launch-and-entry suit with the help of a United Space Alliance suit technician in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Magnus is one of the final four astronauts to launch aboard a space shuttle. She has launched aboard a shuttle twice and most recently spent time aboard the International Space Station as an Expedition 18 crew member from November 2008 to March 2009. 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-2011-5185

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandy Magnus puts on the finishing touches of her launch-and-entry suit with the help of a United Space Alliance suit technician in the Operations and Checkout More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim waves as he dons his launch-and-entry suit and helmet in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Walheim is one of the final four astronauts to launch aboard a space shuttle. All three of Walheim's missions -- STS-110, STS-122 and now STS-135 -- will have been aboard space shuttle Atlantis. STS-135 is scheduled to lift off aboard 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-2011-5199

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim waves as he dons his launch-and-entry suit and helmet in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Walheim is More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim dons his launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Walheim is one of the final four astronauts to launch aboard a space shuttle. All three of Walheim's missions -- STS-110, STS-122 and now STS-135 -- will have been aboard space shuttle Atlantis. STS-135 is scheduled to lift off aboard 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-2011-5190

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Rex Walheim dons his launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Walheim is one of the final four More

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle enjoy a light moment with a card game in their Astronaut Crew Quarters in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. The veteran astronauts 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-2011-5200

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle enjoy a light moment with a card game in their Astronaut Crew Quarters i More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson dons his launch-and-entry suit 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-2011-5191

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

CAPE CANAVERAL, Fla. -- The Closeout Crew helps STS-135 Pilot Doug Hurley prepare to enter space shuttle Atlantis from the White Room of Launch Pad 39A at NASA's Kennedy Space Center in Florida. Hurley is one of the final four astronauts to launch aboard a space shuttle. He is a colonel in the U.S. Marine Corps with one shuttle mission under his belt -- STS-127 aboard Endeavour. Mission Specialist Sandy Magnus, left, will be next to board. She has launched aboard a shuttle twice and most recently spent time aboard the International Space Station as an Expedition 18 crew member from November 2008 to March 2009. STS-135 is scheduled to lift off at 11:26 a.m. EDT on July 8 for a mission to the space station. 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/Sandra Joseph and Kevin O'Connell KSC-2011-5229

CAPE CANAVERAL, Fla. -- The Closeout Crew helps STS-135 Pilot Doug Hurley prepare to enter space shuttle Atlantis from the White Room of Launch Pad 39A at NASA's Kennedy Space Center in Florida. Hurley is one o More

CAPE CANAVERAL, Fla. -- The Closeout Crew helps STS-135 Pilot Doug Hurley prepare to enter space shuttle Atlantis from the White Room of Launch Pad 39A at NASA's Kennedy Space Center in Florida. Hurley is one of the final four astronauts to launch aboard a space shuttle. He is a colonel in the U.S. Marine Corps with one shuttle mission under his belt -- STS-127 aboard Endeavour. STS-135 is scheduled to lift off 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 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/Sandra Joseph and Kevin O'Connell KSC-2011-5227

CAPE CANAVERAL, Fla. -- The Closeout Crew helps STS-135 Pilot Doug Hurley prepare to enter space shuttle Atlantis from the White Room of Launch Pad 39A at NASA's Kennedy Space Center in Florida. Hurley is one o More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson puts on the finishing touches of his launch-and-entry suit with the help of a United Space Alliance suit technician 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-2011-5189

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson puts on the finishing touches of his launch-and-entry suit with the help of a United Space Alliance suit technician in the Operations and Checkout Buildi More

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle wave to media and employees cheering them on in front of the Astronaut Crew Quarters in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. From left, are STS-135 Mission Specialists Rex Walheim and Sandy Magnus, Pilot Doug Hurley, and Commander Chris Ferguson. The silver Astrovan will take the astronauts to Launch Pad 39A, where they will board space shuttle Atlantis for a scheduled liftoff 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-2011-5205

CAPE CANAVERAL, Fla. -- Dressed in their bright-orange launch-and-entry suits, the final four astronauts to launch aboard a space shuttle wave to media and employees cheering them on in front of the Astronaut C More

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandy Magnus dons her launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Magnus is one of the final four astronauts to launch aboard a space shuttle. She has launched aboard a shuttle twice and most recently spent time aboard the International Space Station as an Expedition 18 crew member from November 2008 to March 2009. 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-2011-5187

CAPE CANAVERAL, Fla. -- STS-135 Mission Specialist Sandy Magnus dons her launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Magnus is one of the final four More

CAPE CANAVERAL, Fla. -- The Closeout Crew helps STS-135 Commander Chris Ferguson prepare to enter space shuttle Atlantis from the White Room of Launch Pad 39A 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 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 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/Sandra Joseph and Kevin O'Connell KSC-2011-5225

CAPE CANAVERAL, Fla. -- The Closeout Crew helps STS-135 Commander Chris Ferguson prepare to enter space shuttle Atlantis from the White Room of Launch Pad 39A at NASA's Kennedy Space Center in Florida. Ferguson More

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley dons his launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Hurley is one of the final four astronauts to launch aboard a space shuttle. He is a colonel in the U.S. Marine Corps with one shuttle mission under his belt -- STS-127 aboard Endeavour. 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-2011-5192

CAPE CANAVERAL, Fla. -- STS-135 Pilot Doug Hurley dons his launch-and-entry suit in the Operations and Checkout Building at NASA's Kennedy Space Center in Florida. Hurley is one of the final four astronauts to More

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5680

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Faci More

CAPE CANAVERAL, Fla. -- The STS-135 Mission Specialist Sandy Magnus, center, chats underneath space shuttle Atlantis following a successful mission to the International Space Station. Four astronauts brought Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5683

CAPE CANAVERAL, Fla. -- The STS-135 Mission Specialist Sandy Magnus, center, chats underneath space shuttle Atlantis following a successful mission to the International Space Station. Four astronauts brought At More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson leads his crew out of the Crew Transport Vehicle (CTV) following brief and standard medical checks. Behind Ferguson is Pilot Doug Hurley. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5669

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson leads his crew out of the Crew Transport Vehicle (CTV) following brief and standard medical checks. Behind Ferguson is Pilot Doug Hurley. Four astronauts More

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5677

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Faci More

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson leads his crew out of the Crew Transport Vehicle (CTV) following brief and standard medical checks. Behind Ferguson are Pilot Doug Hurley, and Mission Specialists Sandy Magnus and Rex Walheim. The final four astronauts of NASA's Space Shuttle Program brought space shuttle Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5670

CAPE CANAVERAL, Fla. -- STS-135 Commander Chris Ferguson leads his crew out of the Crew Transport Vehicle (CTV) following brief and standard medical checks. Behind Ferguson are Pilot Doug Hurley, and Mission Sp More

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5676

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Faci More

CAPE CANAVERAL, Fla. -- The STS-135 Mission Specialist Rex Walheim, front center, takes a stroll underneath space shuttle Atlantis following a successful mission to the International Space Station. Four astronauts brought Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5682

CAPE CANAVERAL, Fla. -- The STS-135 Mission Specialist Rex Walheim, front center, takes a stroll underneath space shuttle Atlantis following a successful mission to the International Space Station. Four astrona More

CAPE CANAVERAL, Fla. -- The final four astronauts of NASA's Space Shuttle Program stand proudly in front of space shuttle Atlantis, the remarkable spacecraft that took them on the STS-135 mission to the International Space Station. From left, are Mission Specialists Rex Walheim and Sandy Magnus, Pilot Doug Hurley, and Commander Chris Ferguson. The crew returned to Earth on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5688

CAPE CANAVERAL, Fla. -- The final four astronauts of NASA's Space Shuttle Program stand proudly in front of space shuttle Atlantis, the remarkable spacecraft that took them on the STS-135 mission to the Interna More

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT bringing a close NASA's Space Shuttle Program. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station. STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett KSC-2011-5681

CAPE CANAVERAL, Fla. -- The STS-135 crew members are congratulated on their successful mission to the International Space Station. Four astronauts brought space shuttle Atlantis home to the Shuttle Landing Faci More