The Space Shuttle Challenger disaster on January 28, 1986, killed all seven astronauts on board, but disturbing details later ...
NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.
(CNN) - Wednesday marks the 40th anniversary of the Challenger space shuttle explosion. It was a moment of collective grief on Jan. 28, 1986, when the space shuttle exploded during a live broadcast.
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