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 ...

NASA's second multi-day test to simulate a launch day is underway in Florida in a critical demonstration of whether the agency's massive moon rocket is prepared to send astronauts on a lunar mission.

Add Yahoo as a preferred source to see more of our stories on Google. NASA on Tuesday restarted a two-day dress rehearsal countdown for the agency's new Space Launch System moon rocket after a series ...

NASA on Tuesday restarted a two-day dress rehearsal countdown for the agency's new Space Launch System moon rocket after a series of unrelated glitches, mostly involving ground systems, blocked two ...