Forty years ago, the NASA space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members. Among the seven crew members were five NASA astronauts, as well as a payload ...

The two solid rocket boosters flew in different directions as the external fuel tank became a fireball.(AP: Bruce Weaver / File) Forty years ago, the Challenger space shuttle disintegrated just after ...

Sally Ride speaks to members of the media as NASA personnel set up astronomy equipment on the South Lawn of the White House in preparation for an event with the president and the first lady in ...

If you've already built your Space Shuttle in CityVille, you can now launch the shuttle into outer space, as a new series of ...