Space Shuttles that US built
Six space shuttles were built, but only five ever flew in space.
•Enterprise: The first space shuttle never launched, but was used for atmospheric flight tests after being released from the back of a Boeing 747. It was not built for space flight.
•Columbia:The first fully functional space shuttle launched on April 12,1981. After 27 missions over two decades, it broke apart during re-entry on Feb. 1, 2003, killing all seven astronauts on board.
•Challenger:The shuttle first launched on April 4,1983. On Jan. 28,1986, the shuttle exploded 73 seconds after liftoff, killing all seven astronauts on board.
•Discovery:The shuttle first launched on August 30,1984.Its final mission ended on March 9, 2011.
•Atlantis: The shuttle first launched on Oct. 3, 1985. Its final mission ended July 21, 2011.
•Endeavour:The shuttle first launched on May 7, 1992. It was built as a replacement for the Challenger final mission ended June 1, 2011.
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Story Of Columbia
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