Engineers are investigating a hydrogen leak that cut short a fueling test last week, delaying the moon mission by at least a ...

NASA has finally brought a stubborn hydrogen leak on its new Moon rocket under control, removing one of the last major ...

American space agency NASA says it fixed the problem that caused a hydrogen leak during the first wet dress rehearsal of the ...

NASA engineers replaced seals and updated procedures after Artemis II wet dress rehearsal to address hydrogen leaks and improve fueling operations ahead of the next test.

Liquid hydrogen fuel leaks forced NASA to delay the launch of Artemis II—the same scenario it encountered four years ago ...

NASA ended the Artemis II wet dress rehearsal early after a recurring hydrogen leak, prompting further pad evaluations and shifting the mission’s next launch window to March.

NASA says it is now targeting a March launch for its new moon rocket after encountering fuel leaks during a crucial test. The space agency announced Tuesday that the delay ...

NASA plans an on-pad repair of the fuel leak that derailed an overnight dress rehearsal countdown for the agency's huge ...

If the fueling test goes well, the Artemis II flight around the moon and back could take off as early as Feb. 8.

The agency did not complete a practice countdown for a mission that would be the first to send people around the moon in more than 50 years.

Shortly after 2 a.m. ET on Tuesday, NASA announced that it would forgo February’s launch window (which lasted until Feb. 11) for the Artemis II mission around the moon to allow teams to review data ...