The Challenger space shuttle tragedy shocked the entire world and reminded everyone of the gravity and intense dangers space exploration really is. Decades later, visiting space as a tourist is now ...

This browser does not support the Video element. Seven astronauts were killed in the 1986 space shuttle Challenger disaster. Because a teacher was aboard, millions of schoolchildren watched the event ...

A larger-than-life look into feats of manufacturing.

New Hampshire couldn't have been prouder than in the days and weeks preceding the launch of Space Shuttle Challenger Mission 51L. Concord's own Krysta McAuliffe was to orbit the Earth with six ...

Five astronauts and two payload specialists make up the STS 51-L crew, scheduled to fly aboard the Space Shuttle Challenger in January of 1986. Crewmembers are (left to right, front row) astronauts ...

Add Yahoo as a preferred source to see more of our stories on Google. Forty years ago, the space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members aboard in a ...