Space shuttle program comes full stop

The landing of Atlantis marks the end of NASA's 30-year space shuttle program.

Johnson Space Center Director Michael Coats (left) kisses his wife, Diane, after being presented with the space shuttle Atlantis' mission flag in Houston after the spacecraft landed on Thursday, July 21, 2011. The flag flew during the mission, which brought NASA's space shuttle program to an end. (AP Photo/David J. Phillip)

Johnson Space Center Director Michael Coats (left) kisses his wife, Diane, after being presented with the space shuttle Atlantis' mission flag in Houston after the spacecraft landed on Thursday, July 21, 2011. The flag flew during the mission, which brought NASA's space shuttle program to an end. (AP Photo/David J. Phillip)

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