Christa McAuliffe, a teacher at Concord High School in Concord, New Hampshire, was selected by NASA to be the first teacher to go into space aboard the ill-fated Space Shuttle Challenger. Forty years ...
(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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