How a cold morning, failed O-rings, and flawed decision-making led to tragedy Forty years ago, Space Shuttle Challenger disintegrated 73 seconds into its flight, killing its crew of seven and exposing ...

The Space Shuttle Challenger broke apart just 73 seconds after launch on January 28, 1986, killing all seven crew members ...

The Space Shuttle Challenger disaster on January 28, 1986, killed all seven astronauts on board, but disturbing details later ...