The Space Launch System rocket's RS-25 engine was fired up for the “final round of certification testing ahead of production ...

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

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

CAPE CANAVERAL, Fla. (AP) – NASA ran into exasperating fuel leaks during a make-or-break test of its new Moon rocket Monday, ...

NASA plans to test the planned leak repair with a second dress rehearsal fueling test later this month.

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

At Stennis Space Center, NASA conducted another successful hot fire test of an RS-25 engine at the Fred Haise Test Stand. This now paves the way for the engine to be used for NASA’s Artemis IV mission ...

NASA tested a Space Launch System rocket RS-25 engine at the Stennis Space Center. Credit: NASA Stennis Space Center ...

NASA has been forced to delay a critical fueling test for its Artemis 2 moon rocket due to unusually cold weather forecasted ...

NASA last sent astronauts to the moon during the 1960s and 1970s Apollo program. The new Artemis program aims for a more ...

On Monday, after rolling the SLS rocket to be used for the Artemis II mission to the pad in January, NASA attempted its first ...