Add Yahoo as a preferred source to see more of our stories on Google. A critical rocket test that will help determine when NASA can launch its first human moon mission in more than five decades ...

A hydrogen fuel leak interrupted the launch countdown for NASA's new moon rocket early Monday morning, further delaying the operation that was already running late because of a thunderstorm offshore.

A Vandenberg launch lit up the California skies on Tuesday evening as SpaceX's Falcon 9 rocket soared into orbit, creating a striking 'jellyfish' light display that left millions in awe and others in ...

Braving rare sub-freezing temperatures, Kennedy Space Center workers pressed ahead with a dress-rehearsal countdown Sunday, readying NASA's huge Space Launch System (SLS) rocket for a critical fueling ...

A critical rocket test that will help determine when NASA can launch its first human moon mission in more than five decades appears to be on track after cold weather in Florida prompted a two-day ...