Summary

During the lead-up to NASA’s Artemis 1 mission back in 2022, recurring hydrogen leaks led to significant delays and a cancelled launch attempt . The agency had three years to address the underlying issues with the Space Launch System (SLS) rocket’s hardware, and yet, the Artemis 2 wet dress rehearsal felt all too familiar. NASA engineers detected a hydrogen leak in one of the tail service mast umbilicals on the mobile launcher during the fueling test, prompting them to terminate at the T-5:15 minute mark .

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