NASA's space shuttle Challenger exploded and broke apart Jan. 28, 1986, in the sky over East-Central Florida, killing the seven astronauts on board.

NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.

Seven astronauts were killed in the 1986 space shuttle Challenger disaster. Because a teacher was aboard, millions of schoolchildren watched the event live in school. Forty years later, many of those ...

A former NASA staffer has claimed one of the astronauts on board the Challenger space shuttle saw footage of alien corpses that perished in a UFO crash, RadarOnline.com can reveal. Forty years ago, on ...