The White House proposal to terminate the Space Launch System super-rocket after just one lunar touchdown mission could ...

Funding fights and Starship stumbles could still bring it back down to Earth NASA has begun assembling the Space Launch ...

NASA's Artemis 2 mission is returning astronauts to the moon for the first time since 1972. See live mission updates here.

NASA and Boeing test fired a gargantuan Space Launch System rocket for the second time Thursday, a full-duration eight-minute "hot fire" needed to clear the way for a long-delayed maiden flight ...

NASA fired up RS-25 engine No. 20001 at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, ...

After discovering a problem with a valve on the SLS upper stage, NASA is both delaying a countdown rehearsal and fueling test and modifying it.

NASA’s Space Launch System (SLS) is a powerhouse, but it comes with a hefty price tag and lacks reusability. This video ...

Before the first major Artemis mission takes off, NASA needs to prove its huge rocket system is up to the task with a spectacular "Green Run" hot fire test.

NASA doesn’t need to test SLS anymore, but the Senate mandates it anyway A test article may have been useful five years ago. But five years from now?