If the countdown and fueling test go well, four astronauts will set their sights on a Super Bowl Sunday launch to the moon.

It's not yet known whether the hydrogen leak encountered Monday will impact the moonshot's eventual launch date.

Sign up for CNN Science’s pop-up newsletter covering NASA’s Artemis II mission, which will take four astronauts on a 10-day ...

At best, NASA could launch commander Reid Wiseman and his crew to the moon no sooner than Sunday. The rocket must be flying ...

A fuel leak threatens NASA's ambitious moon mission, echoing past challenges and stirring anticipation for the next lunar ...

NASA began a two-day practice countdown Saturday leading up to the fueling of its new moon rocket, a crucial test that will ...

NASA is planning to conduct a critical fueling test known as a wet dress rehearsal that will determine if Artemis 2 is on ...

NASA ran into exasperating fuel leaks during a make-or-break test of its new moon rocket Monday, calling into question how soon astronauts could take off for a trip around the moon.

The small rocket and capsule have been flying since April 2015 and have combined to make 38 launches, all but one of which ...

NASA ran into a leak while fueling its new moon rocket Monday in one final make-or-break test that will determine when ...