NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore surely didn't think they'd still be on the International ...

After working to improve the booster design and creating new management practices to improve safety, NASA relaunched shuttle flights on Sept. 29, 1988, when Discovery lifted off from the space center.

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.

SHREVEPORT, La - The Space Shuttle Columbia broke apart over East Texas as it returned to earth on Feb. 1, 2003.