Forty years ago, the world watched in horror as NASA's space shuttle Challenger exploded mid-air, killing all seven crew members aboard. The disaster occurred at what was then the pinnacle of the U.S.

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 ...

Forty years ago, Space Shuttle Challenger disintegrated 73 seconds into its flight, killing its crew of seven and exposing the management culture and decision-making process that led NASA to launch on ...