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

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

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

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

NASA is getting ready to launch its massive, fully expendable rocket for the first crewed flight to the Moon since Apollo. The agency’s new era of spaceflight comes with a few parts from its past, ...

NASA's Reactive Additive Manufacturing for the Fourth Industrial Revolution (RAMFIRE) project test-fired a 3D-printed engine nozzle at Marshall Space Flight Center in Alabama. See the test in ...

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.

NASA has run into a leak while fueling its new moon rocket in one final make-or-break test before sending astronauts on a ...

NASA conducted a test of its newly redesigned RS-25 engine for future flights of the Space Launch System (SLS) rocket.

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