NASA is now targeting a launch in March 2026 for its Artemis II mission, the first crewed flight around the moon in more than 50 years, after a critical fueling test at the agency's Kennedy Space Center in Florida revealed challenges delaying liftoff beyond the previously planned February launch window.

A dress rehearsal countdown for NASA's Artemis II moon rocket, intended to clear the way for a possible February launch, ran into a variety of problems and ultimately was called off early Tuesday beca...

Engineers detected leaking hydrogen at the tail end of the next-generation Space Launch System rocket, forcing NASA to end its fueling test with around 5 minutes and 15 seconds left in the simulated l...