For millions of Americans, it was an event that would be seared into their memories for the rest of their lives – on par with the Kennedy assassination and 9/11. On that chilly January day in 1986, ...

Most people will never forget where they were when the Space Shuttle Challenger exploded 73 seconds after liftoff on January 28, 1986. Today marks the 39th anniversary of that tragic event, which took ...

William R. Lucas, a NASA rocket scientist who helped shape the nation's first satellite as well as its first space station, and who later shouldered part of the blame for the 1986 explosion that ...

That kind of strong leadership and great teamwork are the real safety systems of spaceflight.

For 73 seconds, a crowd of excited Americans looked to the sky in wonder and awe as they waved goodbye to the crew aboard ...

WASHINGTON — It's been 39 years since the Challenger space shuttle explosion, one of NASA's most devastating tragedies. NASA's Challenger shuttle exploded 73 seconds after lifting off on Jan. 28, 1986 ...

Corrections & Clarifications: An earlier version of this story misstated the date of the Space Shuttle Columbia disaster. It occurred Feb. 1, 2003. For millions of Americans, it was an event that ...