NASA's Artemis II rocket encountered a new helium flow issue which is likely to delay its early March launch. Here's what we know.

The engine section (bottom center) of the SLS for Artemis 3 is moved from the Michoud Assembly Building to a barge Dec. 4 for transport to the Kennedy Space Center, where it will be outfitted ...

An issue with the SLS rocket's helium system forced the agency to roll back the rocket to NASA's Vehicle Assembly Building ...

Prime contractor Boeing rolled out the second Space Launch System (SLS) Core Stage on July 16 from the Michoud Assembly Facility (MAF) and secured it to NASA’s Pegasus barge for transportation to the ...

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

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

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