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Hydraulic system issue triggered early engine shutdown during SLS test-firing
NASA officials said Tuesday the weekend test-firing of the Space Launch System moon rocket's core stage was cut short by an out-of-limits parameter in a hydraulic system for gimbaling, or vectoring, one of its engines. NASA Administrator Jim Bridenstine told Spaceflight Now engineers are "feeling pretty good" about the data gathered during the shortened test-firing, and managers may decide to ship the SLS core stage to the Kennedy Space Center for launch preparations without re-attempting the planned eight-minute hot fire.

NASA studying cause of early end to moon rocket test-firing
A critical test-firing of NASA's Space Launch System moon rocket in Mississippi ended just 67 seconds after it began Saturday, well short of a planned eight-minute burn that was supposed to clear the way for the space agency to finally ship the rocket's core stage to the Kennedy Space Center in Florida for launch preparations.

Video: SLS core stage test-firing ends early
The four RS-25 engines at the bottom of NASA's first Space Launch System core stage shut down about a minute into a ground test-firing Saturday that was supposed to last more than eight minutes.
VideoLive coverage: SLS core stage engines shut down early during critical hotfire test
A critical test-firing of the Space Launch System's core stage engines cut off about a minute into a planned eight-minute burn Saturday on a test stand at NASA's Stennis Space Center in Mississippi. The rocket's four engines ignited at 5:27 p.m. EST (2227 GMT) for a test that was to pave the way for the core stage's shipment to the Kennedy Space Center for launch preparations.

NASA proceeds with SLS booster stacking in Florida before core stage arrives
NASA ground crews at the Kennedy Space Center are continuing to stack segments of the Space Launch System’s side-mounted solid rocket boosters on a mobile launch platform inside the iconic Vehicle Assembly Building.

NASA’s huge moon rocket faces critical test-firing before first launch
A critical test firing Saturday of the four main engines powering the first stage of NASA's gargantuan Space Launch System moon rocket is the final major hurdle before the fully assembled booster's costly, oft-delayed launch late this year on an unpiloted test flight.
VideoNASA sets mid-January target for SLS hot fire test
NASA is moving forward with a crucial test-firing of the core stage of the first Space Launch System heavy-lift rocket as soon as Jan. 17 after engineers were satisfied with the results of a fueling test last month.

Canadian astronaut to join NASA’s first crewed Artemis mission around the moon
A Canadian space flier will join three NASA crew members on the first piloted flight of the Space Launch System and Orion spacecraft around the moon, becoming the first non-U.S. astronaut on a lunar voyage, officials announced last week.

NASA names 18 astronauts for Artemis moon missions
Eighteen astronauts have been selected -- nine men and nine women -- to begin training for upcoming Artemis missions to the moon, NASA announced Wednesday. The list includes the as-yet-unnamed next man and first woman who will set foot on the lunar surface later this decade.

SLS cryogenic tanking test preps begin this weekend
Final preparations began this weekend at NASA's Stennis Space Center in Mississippi to load super-cold liquid hydrogen and liquid oxygen into the massive core stage of the Space Launch System heavy-lift rocket for the first time as soon as Monday.