Engineers are getting ready to put the pressure on hardware for the world’s most powerful rocket, NASA’s Space Launch System, as part of a rigorous test series to ensure each structure can withstand ...

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 ...

Water Gushes From SLS Rocket Propellant Tank As Engineers Break It On Purpose NASA is making progress in the development of its troubled Space Launch System (SLS), completing structural testing with a ...

NASA will replace on the pad a seal for a quick disconnect fitting between a liquid hydrogen fuel line and the core stage of the SLS, keeping open the option for a launch attempt later this month.

While NASA has yet to launch an Artemis mission to the moon, the agency is already doing engine testing for far-future missions. NASA finished its sixth RS-25 engine hot-fire test on Thursday (Aug. 5) ...

Days after NASA signed two international memoranda of agreement related to missions for the Artemis moon program, there's good news on offer for its delayed Space Launch System rocket testing. "Green ...