Artemis 2 rolled back to VAB after helium‑flow issue; teams replace seals and batteries, target early‑April launch window After a wet dress rehearsal, NASA rolled Artemis 2 back to the Vehicle Assembly Building to inspect a suspected helium‑flow issue to the upper stage; teams will replace flight‑termination batteries, an oxygen tail‑service‑mast seal and inspect internal components with the aim of an early‑April launch window if the root cause is resolved.

NASA's Artemis 2 mission faces a critical setback as engineers roll the vehicle back for urgent inspections after a helium flow issue was detected.

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