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

American space agency NASA said the helium problem in the SLS has been fixed, further tweaks underway before the rocket's rollout.

NASA increases Artemis mission cadence, adds a 2027 test flight, and standardizes SLS configuration to support a 2028 Moon landing and annual missions thereafter.

In shaking up its Artemis lunar program, NASA's new moon plan looks more like the Apollo missions of the 1960s. Instead of ...

After NASA announced a helium flow issue in the rocket, SLS has returned to the VAB. This further delayed the launch of ...

NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.

Helium flow issues in the upper stage found after last week's successful wet dress rehearsal require more scrutiny ...

NASA is preparing for a second full fueling attempt of its Space Launch System (SLS) rocket this week, aiming to load more than 700,000 gallons of liquid hydrogen and liquid oxygen as part of a full ...

It looks like a March launch is no longer in the cards for Artemis II, NASA's first crewed trip to the moon's vicinity since the final Apollo mission over 50 years ago. While preparations were ...