Artemis 2's hydrogen leaks persist as NASA pushes toward March launch

NASA’s Artemis 2 wet dress rehearsal exposed persistent hydrogen leaks at the Space Launch System tail service mast, a problem that plagued Artemis 1. Engineers say leaks stem from bespoke cryogenic hardware and stresses from rollout; officials note the leak was stabilized to acceptable levels and a wealth of data was gathered, but it hasn’t been eliminated. The team postponed February’s window to March to allow pad-side fixes and further testing before a crewed lunar mission around the Moon.