The space shuttle Challenger explosion was a defining moment of the 1980s. Whether you were watching on TV or in person, chances are, you remember exactly where you were and how you felt.

Forty years after the Challenger disaster, the tragedy is remembered not only for the seven lives lost, but for the engineer who tried to stop the launch and was ignored.

Friday marks a solemn anniversary for the space community. On Jan. 28, 1986, seven astronauts were killed when the Challenger space shuttle exploded shortly after launch. The crew of the Challenger in ...

Forty years ago, Americans were shocked when the space shuttle Challenger exploded 73 seconds after it launched on a chilly ...