From Artemis IV onward, the new upper stage will be used instead of the existing interim cryogenic propulsion stage.

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

NASA's Artemis 2 moon mission is in trouble again after teams discovered a helium issue within the SLS rocket following successful wet dress rehearsal ...

NASA has selected the Centaur upper stage currently used on United Launch Alliance’s Vulcan rocket for future flights of the ...

NASA's Artemis II is on track to shoot for the moon in April after engineers fixed the helium issue that grounded the mission ...

A pending contractor switchup marks another blow to Boeing, which is struggling to prove itself as a reliable strategic ...

NASA has canceled EUS and Block 1B/2 upgrades entirely, opting for a standardized upper stage to support ~10-month intervals ...

NASA's Space Launch System rocket is about to depart the launch pad in Florida where it has been vertical for more than a month ahead of Artemis 2.

NASA on Thursday said it intends to attempt the launch of a historic, 10-day mission around the moon and back in April, following slips from launch windows in February and March. Officials also ...

SpaceX and Blue Origin hold Human Lander System (HLS) flight service contracts with NASA to ferry astronauts to and from ...

NASA is adding another Artemis moon mission to its schedule even before Artemis 2 has a new date for launch. Here's the latest on the program.

NASA's towering Space Launch System rocket is about to depart the launch pad in Florida where it has been vertical for more than a month in anticipation of the first U.S. human lunar mission in ...