NASA loaded cryogenic propellant into the Space Launch System rocket and Orion spacecraft for a second time on February 19, ...

The soonest the astronauts could blast off is March 6.

NASA's second attempt to run a "wet test" of the Space Launch System (SLS) for its Artemis II mission was successful. Following a failure of some seals during the first attempt earlier this month, ...

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

NASA has started the countdown for a second wet dress rehearsal for its Artemis II moon mission, a critical practice run leading up to the planned launch that will send astronauts on a journey around ...

NASA is fueling its new moon rocket in one final make-or-break test before sending astronauts on a lunar fly-around. The launch team began loading the 322-foot rocket with super-cold hydrogen ...

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.

A water system activation at the Thad Cochran Test Stand (B-2) on Jan. 30 at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, helped capture critical data to support testing a new SLS ...

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 ...