AP/Pool/Reuters, P. Ducharme
The space shuttle Atlantis deploys its braking parachute during landing Wednesday morning, Feb. 20, 2008, at the Kennedy Space Center in Cape Canaveral, Fla. The shuttle touched down at 9:07 a.m. Its 5 million-mile, 13-day journey was highlighted by the delivery of a new European space station lab to the international space station.
AP Photo/Chris O'Meara
The space shuttle Atlantis glides by a fire truck before landing Wednesday morning Feb. 20, 2008, at the Kennedy Space Center in Cape Canaveral, Fla.
AP Photo/ESA/NASA
A view of the International Space Station from shuttle Atlantis, Tuesday Feb. 19, 2008. Atlantis' astronauts got their spaceship ready for the ride home on Tuesday, wrapping up a two-week mission to add Europe's new orbital laboratory to the international space station.
AP Photo/NASA TV
American astronaut Rex Walheim works on the Columbus module connected to the International Space Station, Wednesday, Feb. 13, 2008. With two of their three spacewalks completed, the astronauts aboard the linked shuttle-station complex focused Thursday on getting the new Columbus lab up and running.
AP Photo/NASA TV
The European Space Agency's Columbus module, at lower right, is seen attached to the International Space Station, Tuesday, Feb. 12, 2008. The module was lifted from the payload bay of the shuttle Atlantis on Monday, Feb. 11, and installed during a spacewalk.
AP Photo/NASA TV
Astronauts Stanley Love, left and Rex Walheim work to remove the Columbus module from the payload bay of shuttle Atlantis during a spacewalk, Monday, Feb. 11, 2008.
AP Photo/NASA TV
International Space Station commander Peggy Whitson, center, and Atlantis commander Steve Frick, far right, prepare astronaut Rex Walheim, center rear, for a spacewalk, Monday, Feb. 11, 2008.
AP Photo/John Raoux
Space shuttle Atlantis lifts off from pad 39A at the Kennedy Space Center, Thursday, Feb. 7, 2008, in Cape Canaveral, Fla. Atlantis' seven member crew embarked on an 11-day mission to deliver Columbus, a laboratory module built by the European Space agency, to the international space Station.
AP Photo/Marta Lavandier
Space shuttle Atlantis lifts off from pad 39A at the Kennedy Space Center, Fla. Thursday Feb. 7, 2008. Atlantis' seven member crew began an 11-day mission to deliver Columbus, a laboratory module built by the European Space Agency, to the international space station.
AP Photo/Chris O'Meara
The space shuttle Atlantis heads for orbit after lifting off Thursday afternoon Feb. 7, 2008, at the Kennedy Space Center in Cape Canaveral, Fla.
AP Photo/John Raoux
Space shuttle Atlantis is seen on pad 39A at the Kennedy Space Center, Fla., Thursday Feb. 7, 2008. Atlantis is scheduled to lift off Thursday afternoon on a mission to the international space station to deliver a laboratory module.
AP Photo/Chris O'Meara
STS-122 Mission Specialists, from left, Leopold Eyharts, of France, Stanley Love, Hans Schlegel, of Germany, Rex Walheim, and Leland Melvin, prepare to board the astronaut van for a trip to Launch Pad 39A and a planned liftoff on the space shuttle Atlantis Thursday Feb. 7, 2008, at the Kennedy Space Center in Cape Canaveral, Fla.
AP Photo/Chris O'Meara
The Rotating Service Structure pulls away from the space shuttle Atlantis Wednesday evening Feb. 6, 2008 at the Kennedy Space Center in Cape Canaveral, Fla. Atlantis's Seven astronauts were making final preparations for Thursday's planned liftoff.
Getty Images/Eliot J. Schechter
Space shuttle Atlantis sits on launch pad 39A at the Kennedy Space Center Thursday, Dec. 6, 2007, in Cape Canaveral, Fla. Thursday's and a subsequent launch attempt were scrubbed due to engine-cutoff sensor issues. After scrubbing two shuttle launch attempts in four days because of the balky gauges, NASA managers decided to put off any further tries until February.
AP/Florida Today, Craig Rubadoux
Space shuttle Atlantis rolls back on the service structure on pad 39A to prepare for its launch at the Kennedy Space Center in Cape Canaveral, Fla., Wednesday, Dec. 5, 2007. During an 11-day mission, the shuttle will deliver the European-built Columbus module to the International Space Station.
AP Photo/NASA
The official crew portrait of the space shuttle Atlantis from the left (front row) are astronauts Stephen N. Frick, commander; European Space Agency's Leopold Eyharts; and Alan G. Poindexter, pilot. Back row from left are astronauts Leland D. Melvin, Rex J. Walheim, Stanley G. Love and European Space Agency's Hans Schlegel, all mission specialists. Eyharts will remain aboard the International Space Station.
STAN HONDA/AFP/Getty Images
A sign points towards the space shuttle Atlantis as it sits on launch pad 39A at Kennedy Space Center in Cape Canaveral, Fla., Tuesday, Dec. 4, 2007, in preparation for launch.
AP Photo/Chris O'Meara
A butterfly lands on a piece of Lantana near the space shuttle Atlantis Tuesday Dec. 4, 2007, at the Kennedy Space Center in Cape Canaveral, Fla. Atlantis' seven astronauts were making final preparations for liftoff.
BRUCE WEAVER/AFP/Getty Images
The space shuttle Atlantis heads for launch pad 39A Nov. 10, 2007, at Kennedy Space Center, Fla., in preparation for its planned launch.
GETTY IMAGES/Joe Raedle
The space shuttle Atlantis is slowly driven out to launch pad 39A at the Kennedy Space Center November 10, 2007 at Cape Canaveral, Florida. The space shuttle is being rolled out for a scheduled December launch for a mission to the International Space Station.