NASA's Reactive Additive Manufacturing for the Fourth Industrial Revolution (RAMFIRE) project test-fired a 3D-printed engine ...

NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.

In response to a query from Ars about the engine test anomalies, Rocket Lab Chief Executive Officer Pete Beck downplayed concerns.

Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

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

CAPE CANAVERAL, Fla. -- NASA said Tuesday it will now target a March launch of its new moon rocket after running into exasperating fuel leaks during a make-or-break test a day earlier. The space ...

Aerospace company Relativity is expanding its rocket component production and rocket engine testing operations at NASA’s Stennis Space Center in Hancock County. The project is a $59-million corporate ...

CAPE CANAVERAL, Fla. -- 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 ...

NASA is fueling its new moon rocket in one final make-or-break test before sending astronauts on a lunar fly-around ...