The pressure to fix SLS and get to a launch for Artemis 2 will build. If there is another rollback in April or new leak or valve issue in May or long repairs.

That means NASA and contractor ground teams will immediately begin preparing to roll the 322-foot-tall (98-meter) SLS rocket off of Launch Complex 39B and back to the VAB. The rocket and its mobile ...

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.

The Artemis II Space Launch System (SLS) rocket and Orion spaceship began the slow crawl back to their processing hangar Feb. 25, ending a 39-day test period at Kennedy Space Center Launch Complex 39B ...