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After rollback of the Rotating Service Structure (at left), Space Shuttle Endeavour stands ready for launch targeted for 10:06 p.m. EST tonight on mission STS-97 to the International Space Station. The orbiter carries the P6 Integrated Truss Segment containing solar arrays that will be temporarily installed to the Unity connecting module by the Z1 truss, recently delivered to and installed on the Station on mission STS-92. The two solar arrays are each more than 100 feet long. They will capture energy from the sun and convert it to power for the Station. Two spacewalks will be required to install the solar array connections KSC-00pp1776

After rollback of the Rotating Service Structure (at left), Space Shuttle Endeavour stands ready for launch targeted for 10:06 p.m. EST tonight on mission STS-97 to the International Space Station. The orbiter More

KENNEDY SPACE CENTER, Fla. -- Filling the ground with billows of smoke and steam created by the flaming solid rocket boosters, Space Shuttle Atlantis speeds toward space on mission STS-106. The perfect on-time liftoff occurred at 8:45:47 a.m. EDT. On the 11-day mission to the International Space Station, the seven-member crew will perform support tasks on orbit, transfer supplies and prepare the living quarters in the newly arrived Zvezda Service Module. The first long-duration crew, dubbed “Expedition One,” is due to arrive at the Station in late fall. Landing of Atlantis is targeted for 4:45 a.m. EDT on Sept. 19 KSC00pd1263

KENNEDY SPACE CENTER, Fla. -- Filling the ground with billows of smoke and steam created by the flaming solid rocket boosters, Space Shuttle Atlantis speeds toward space on mission STS-106. The perfect on-time More

KENNEDY SPACE CENTER, FLA. -- Near sunset, Space Shuttle Endeavour, atop the mobile launcher platform, begins moving through the doors of the Vehicle Assembly Building for rollout to Launch Pad 39A. First motion out of the VAB was at 8:10 p.m. July 10, and the shuttle was hard down on the pad at 3:02 a.m. July 11. Seen below the orbiter's wings and attached to the launcher platform are the tail masts, which provide several umbilical connections to the orbiter, including a liquid-oxygen line through one and a liquid-hydrogen line through another. Endeavour is scheduled to launch on mission STS-118 on Aug. 7. During the mission, Endeavour will carry into orbit the S5 truss, SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and will mark the first flight of Mission Specialist Barbara Morgan, the teacher-turned-astronaut whose association with NASA began more than 20 years ago. STS-118 will be the first flight since 2002 for Endeavour, which has undergone extensive modifications, including the addition of safety upgrades already added to orbiters Discovery and Atlantis. Photo credit: NASA/Tom Farrar KSC-07pd1853

KENNEDY SPACE CENTER, FLA. -- Near sunset, Space Shuttle Endeavour, atop the mobile launcher platform, begins moving through the doors of the Vehicle Assembly Building for rollout to Launch Pad 39A. First motio More

KENNEDY SPACE CENTER, FLA. -- Bill Gerstenmaier, NASA associate administrator for Space Operations; Sigmar Wittig, head of the DLR, the German Space Agency; Mike Griffin, NASA administrator; and Michel Tognini, head of the European Astronaut Center, examine the thermal protection system tiles beneath Space Shuttle Discovery following the landing of mission STS-116 on Runway 15 at NASA Kennedy Space Center's Shuttle Landing Facility. During the STS-116 mission, three spacewalks attached the P5 integrated truss structure to the station, and completed the rewiring of the orbiting laboratory's power system. A fourth spacewalk retracted a stubborn solar array. Main gear touchdown was at 5:32 p.m. EST. Nose gear touchdown was at 5:32:12 p.m. and wheel stop was at 5:32:52 p.m. At touchdown -- nominally about 2,500 ft. beyond the runway threshold -- the orbiter is traveling at a speed ranging from 213 to 226 mph. Discovery traveled 5,330,000 miles, landing on orbit 204. Mission elapsed time was 12 days, 20 hours, 44 minutes and 16 seconds. This is the 64th landing at KSC. Photo credit: NASA/Kim Shiflett KSC-06pd2878

KENNEDY SPACE CENTER, FLA. -- Bill Gerstenmaier, NASA associate administrator for Space Operations; Sigmar Wittig, head of the DLR, the German Space Agency; Mike Griffin, NASA administrator; and Michel Tognini More

KENNEDY SPACE CENTER, FLA. - In Orbiter Processing Facility bay 1 at NASA's Kennedy Space Center, workers complete installation of the orbiter boom sensor system into Atlantis' payload bay. The 50-foot-long boom attaches to the shuttle arm and is one of the new safety measures added prior to Return to Flight last year. It equips the orbiter with cameras and laser systems to inspect the shuttle's heat shield while in space. Atlantis is scheduled to launch on mission STS-115 no earlier than Aug. 28. Photo credit: NASA/Jim Grossmann KSC-06pd0568

KENNEDY SPACE CENTER, FLA. - In Orbiter Processing Facility bay 1 at NASA's Kennedy Space Center, workers complete installation of the orbiter boom sensor system into Atlantis' payload bay. The 50-foot-long bo More

KENNEDY SPACE CENTER, FLA. -- Inside the Vehicle Assembly Building, the external tank for Endeavour is being lowered toward the mobile launcher platform for mating with the solid rocket boosters. Endeavour is currently targeted for rollover to the VAB July 5. On the lower end of the tank is seen the bipod fittings that connect the external tank to the orbiter through the shuttle's two forward attachment struts. Endeavour is the designated orbiter for mission STS-118, targeted for launch on Aug. 9 to the International Space Station. The mission will continue space station construction by delivering a third starboard truss segment, S5, as well as carrying the external stowage platform 3. Photo credit: NASA/Amanda Diller KSC-07pd1542

KENNEDY SPACE CENTER, FLA. -- Inside the Vehicle Assembly Building, the external tank for Endeavour is being lowered toward the mobile launcher platform for mating with the solid rocket boosters. Endeavour is More

KENNEDY SPACE CENTER, FLA. - STS-115 Commander Brent Jett settles in the cockpit of the Shuttle Training Aircraft to practice landing the shuttle. STA practice is part of launch preparations. The STA is a Grumman American Aviation-built Gulf Stream II jet that was modified to simulate an orbiter’s cockpit, motion and visual cues, and handling qualities. In flight, the STA duplicates the orbiter’s atmospheric descent trajectory from approximately 35,000 feet altitude to landing on a runway. Because the orbiter is unpowered during re-entry and landing, its high-speed glide must be perfectly executed the first time. Mission STS-115 is scheduled to lift off about 12:29 p.m. Sept. 6. Mission managers cancelled Atlantis' first launch campaign due to a lightning strike at the pad and the passage of Tropical Storm Ernesto along Florida's east coast. The mission will deliver and install the 17-and-a-half-ton P3/P4 truss segment to the port side of the integrated truss system on the orbital outpost. The truss includes a new set of photovoltaic solar arrays. When unfurled to their full length of 240 feet, the arrays will provide additional power for the station in preparation for the delivery of international science modules over the next two years. STS-115 is expected to last 11 days and includes three scheduled spacewalks. Photo credit: NASA/Kim Shiflett KSC-06pd2027

KENNEDY SPACE CENTER, FLA. - STS-115 Commander Brent Jett settles in the cockpit of the Shuttle Training Aircraft to practice landing the shuttle. STA practice is part of launch preparations. The STA is a Grumm More

The International Space Station's Expedition One crew members wave at the camera and onlookers as they prepare to depart KSC from the Shuttle Landing Facility for their return to the Johnson Space Center in Houston. From left to right are Yuri Pavlovich Gidzenko, William M. Shepherd and Sergei Konstantinovich Krikalev. The crew returned to Earth aboard Discovery March 21, concluding mission STS-102 KSC01pp0561

The International Space Station's Expedition One crew members wave at the camera and onlookers as they prepare to depart KSC from the Shuttle Landing Facility for their return to the Johnson Space Center in Hou More

KENNEDY SPACE CENTER, FLA. - An X-band radar is installed on the U.S. Naval Ship Hayes at Port Canaveral in Florida to support the July 1 launch of Space Shuttle Discovery on mission STS-121. There are two Continuous Pulse Doppler X-band radars located on ships for the STS-121 launch. The other one is mounted on a booster recovery ship downrange of the launch site. The two radars provide velocity and differential Shuttle/debris motion information. Combined with the C-band radar located at the Haulover Canal near the launch site, they provide high definition images of any debris that might fall from the external tank/shuttle. The X-band data (screen captures) will be sent from the ships via satellite link to the National Center for Atmospheric Research site. Photo credit: NASA/Jim Grossmann KSC-06pd1274

KENNEDY SPACE CENTER, FLA. - An X-band radar is installed on the U.S. Naval Ship Hayes at Port Canaveral in Florida to support the July 1 launch of Space Shuttle Discovery on mission STS-121. There are two More

KENNEDY SPACE CENTER, FLA. - Students work on their experiments that will fly in SPACEHAB on Space Shuttle Columbia on mission STS-107. SPACEHAB's complement of commercial experiments includes six educational experiments designed and developed by students in six different countries under the auspices of Space Technology and Research Students (STARS), a global education program managed by SPACEHAB subsidiary Space Media. The countries represented are Australia, China, Israel, Japan, Liechtenstein and the United States. The student investigators who conceived these experiments will monitor their operations in space. The experiments will be housed in BioServe Space Technologies' Isothermal Containment Module (ICM --a small temperature-controlled facility that provides experiment support such as physical containment, lighting, and video imaging) and stowed in a middeck-size locker aboard the SPACEHAB Research Double Module. KSC-03pd0084

KENNEDY SPACE CENTER, FLA. - Students work on their experiments that will fly in SPACEHAB on Space Shuttle Columbia on mission STS-107. SPACEHAB's complement of commercial experiments includes six educational e More

KENNEDY SPACE CENTER, FLA. -- Looking as if it is breaking out of a cocoon, space shuttle Atlantis races into the sky on mission STS-122 to the International Space Station. Liftoff of the shuttle was on time at 2:45 p.m. EST. The launch is the third attempt for Atlantis since December 2007 to carry the European Space Agency's Columbus laboratory to the International Space Station. During the 11-day mission, the crew's prime objective is to attach the laboratory to the Harmony module, adding to the station's size and capabilities. Photo credit: NASA/Sandra Joseph, Tony Gray, Robert Murray KSC-08pd0220

KENNEDY SPACE CENTER, FLA. -- Looking as if it is breaking out of a cocoon, space shuttle Atlantis races into the sky on mission STS-122 to the International Space Station. Liftoff of the shuttle was on time More

KENNEDY SPACE CENTER, Fla. -- Trees frame Space Shuttle Discovery trailing columns of fire from the solid rocket boosters as it soars into the blue sky on mission STS-105 to the International Space Station. Liftoff from Launch Pad 39A occurred at 5:10:14 p.m. EDT. Besides the Shuttle crew of four, Discovery carries the Expedition Three crew who will replace Expedition Two on the Space Station. The mission payload includes the third flight of the Italian-built Multi-Purpose Logistics Module Leonardo, delivering additional scientific racks, equipment and supplies for the Space Station, and the Early Ammonia Servicer (EAS) tank. The EAS, which will be attached to the Station during two spacewalks, contains spare ammonia for the Station’s cooling system. The three-member Expedition Two crew will be returning to Earth aboard Discovery after a five-month stay on the Station KSC-01PP1470

KENNEDY SPACE CENTER, Fla. -- Trees frame Space Shuttle Discovery trailing columns of fire from the solid rocket boosters as it soars into the blue sky on mission STS-105 to the International Space Station. Lif More

KENNEDY SPACE CENTER, FLA. - In the Vehicle Assembly Building, the overhead crane moves the external tank designated for Space Shuttle Discovery toward high bay 3. In the foreground is the tip of one of the solid rocket boosters. There it will be stacked with the solid rocket boosters already in place on the mobile launcher platform. Discovery is scheduled to launch on mission STS-121 in July. Photo credit: NASA/Amanda Diller KSC-06pd0724

KENNEDY SPACE CENTER, FLA. - In the Vehicle Assembly Building, the overhead crane moves the external tank designated for Space Shuttle Discovery toward high bay 3. In the foreground is the tip of one of the More

KENNEDY SPACE CENTER, FLA. - After landing at NASA's Kennedy Space Center aboard a Grumman G2 aircraft, the STS-121 crew gathers at a microphone for the media. Seen here at center is Mission Specialist Stephanie Wilson; at right is Piers Sellers. Other crew members are Mission Commander Steven Lindsey, Pilot Mark Kelly, and Mission Specialists Michael Fossum, Lisa Nowak and Thomas Reiter, who represents the European Space Agency. The crew is at the space center to take part in a Terminal Countdown Demonstration Test, or TCDT. Over several days, the crew will practice emergency egress from the pad and suit up in their orange flight suits for the simulated countdown to launch. Space Shuttle Discovery is designated to launch July 1 on mission STS-121. It will carry supplies to the International Space Station. Photo credit: NASA/Kim Shiflett KSC-06pd1044

KENNEDY SPACE CENTER, FLA. - After landing at NASA's Kennedy Space Center aboard a Grumman G2 aircraft, the STS-121 crew gathers at a microphone for the media. Seen here at center is Mission Specialist Stephan More

KENNEDY SPACE CENTER, FLA. -- In Vehicle Assembly Building high bay 1, the orbiter Atlantis is being lowered into position for mating to its external tank/solid rocket booster stack. Space Shuttle Atlantis is scheduled to launch on mission STS-104 in early July KSC-01pp1045

KENNEDY SPACE CENTER, FLA. -- In Vehicle Assembly Building high bay 1, the orbiter Atlantis is being lowered into position for mating to its external tank/solid rocket booster stack. Space Shuttle Atlantis is s More

KENNEDY SPACE CENTER, FLA. -- On a morning where broken clouds filled the sky of Central Florida, the shuttle carrier aircraft, or SCA, and its passenger Atlantis ease their way past the NASA News Center for a landing at the KSC Shuttle Landing Facility, known as the SLF. The aircraft is a modified Boeing 747 jetliner Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Touchdown was at 8:27 a.m. EDT. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Debbie Odom KSC-07pd1722

KENNEDY SPACE CENTER, FLA. -- On a morning where broken clouds filled the sky of Central Florida, the shuttle carrier aircraft, or SCA, and its passenger Atlantis ease their way past the NASA News Center for More

KENNEDY SPACE CENTER, FLA. -- Birds take flight as Space Shuttle Endeavour lifts off from Launch Pad 39A on mission STS-111 to the International Space Station. Liftoff occurred at 5:22:49 p.m. EDT. The STS-111 crew includes Commander Kenneth Cockrell, Pilot Paul Lockhart, and Mission Specialists Franklin Chang-Diaz and Philippe Perrin (CNES), as well as the Expedition Five crew members Valeri Korzun, Peggy Whitson and Sergei Treschev. This mission marks the 14th Shuttle flight to the International Space Station and the third Shuttle mission this year. Mission STS-111 is the 18th flight of Endeavour and the 110th flight overall in NASA's Space Shuttle program KSC-02pd0903

KENNEDY SPACE CENTER, FLA. -- Birds take flight as Space Shuttle Endeavour lifts off from Launch Pad 39A on mission STS-111 to the International Space Station. Liftoff occurred at 5:22:49 p.m. EDT. The STS-11 More

KENNEDY SPACE CENTER, FLA. - Sitting atop the Mobile Launcher Platform, Space Shuttle Atlantis towers above the workers aboard. The Shuttle and MLP rest on top of the crawler-transporter beneath it, which moves about 1 mile per hour. Atlantis is scheduled for launch April 4 on mission STS-110, which will install the S0 truss, the framework that eventually will hold the power and cooling systems needed for future international research laboratories on the International Space Station. The Canadarm2 robotic arm will be used exclusively to hoist the 13-ton truss from the payload bay to the Station. The S0 truss will be the first major U.S. component launched to the Station since the addition of the Quest airlock in July 2001. The four spacewalks planned for the construction will all originate from the airlock. The mission will be Atlantis' 25th trip to space KSC-02pd0274

KENNEDY SPACE CENTER, FLA. - Sitting atop the Mobile Launcher Platform, Space Shuttle Atlantis towers above the workers aboard. The Shuttle and MLP rest on top of the crawler-transporter beneath it, which move More

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39B at NASA's Kennedy Space Center, the payload canister holding Space Shuttle Discovery's payloads nears the payload changeout room on the rotating service structure. The red umbilical lines are still attached. The payload changeout room provides an environmentally clean or "white room" condition in which to receive a payload transferred from a protective payload canister. After the shuttle arrives at the pad, the rotating service structure will close around it and the payloads, which include the multi-purpose logistics module and integrated cargo carrier, will then be transferred from the changeout room into Discovery's payload bay. Discovery's launch to the International Space Station on mission STS-121 is targeted for July 1 in a launch window that extends to July 19. During the 12-day mission, crew members will test new hardware and techniques to improve shuttle safety. Photo credit: NASA/Kim Shiflett KSC-06pd0858

KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39B at NASA's Kennedy Space Center, the payload canister holding Space Shuttle Discovery's payloads nears the payload changeout room on the rotating service structur More

KENNEDY SPACE CENTER, Fla. -- Following mission STS-105, the Crew Transfer Vehicle (CTV) is moved into place beside orbiter Discovery on KSC’s Shuttle Landing Facility runway 15. Both the STS-105 and Expedition Two crews will exit the Space Shuttle into the CTV where they will be given preliminary physical examinations by a physician. Main gear touchdown was at 2:22:58 p.m. EDT; wheel stop, at 2:24:06 p.m. EDT. The 11-day, 21-hour, 12-minute mission accomplished the goals set for the 11th flight to the International Space Station: swapout of the resident Station crew; delivery of equipment, supplies and scientific experiments; and installation of the Early Ammonia Servicer and heater cables for the S0 truss on the Station. Discovery traveled 4.3 million miles on its 30th flight into space, the 106th mission of the Space Shuttle program. Out of five missions in 2001, the landing was the first to occur in daylight at KSC KSC-01pp1502

KENNEDY SPACE CENTER, Fla. -- Following mission STS-105, the Crew Transfer Vehicle (CTV) is moved into place beside orbiter Discovery on KSC’s Shuttle Landing Facility runway 15. Both the STS-105 and Expedition More

KENNEDY SPACE CENTER, FLA. -- Under a blue sky streaked with clouds, Launch Pad 39B holds Space Shuttle Discovery, ready for launch of mission STS-116. At the far left is the rotating service structure, rolled back after midnight in preparation for launch. Next to Discovery is the fixed service structure, with the 80-foot-high lightning mast on top, part of the lightning protection system on the pad. Beneath Discovery's wings are the tail masts, which provide several umbilical connections to the orbiter, including a liquid-oxygen line through one and a liquid-hydrogen line through another. Seen above the golden external tank is the vent hood (known as the "beanie cap") at the end of the gaseous oxygen vent arm, extending from the FSS. Vapors are created as the liquid oxygen in the external tank boil off. The hood vents the gaseous oxygen vapors away from the space shuttle vehicle. Below it, also extending toward Discovery from the FSS, is the orbiter access arm with the White Room at the end. The crew gains access into the orbiter through the White Room. Discovery is scheduled to launch on mission STS-116 at 9:35 p.m. today. On the mission, the crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Ken Thornsley KSC-06pd2674

KENNEDY SPACE CENTER, FLA. -- Under a blue sky streaked with clouds, Launch Pad 39B holds Space Shuttle Discovery, ready for launch of mission STS-116. At the far left is the rotating service structure, rol More