Technology & Science

NASA Locks In April 1 Target After Fixing Helium Seal on Artemis II

Following a unanimous Flight Readiness Review, NASA reset the twice-delayed Artemis II launch for 1 April 2026 after replacing a faulty helium quick-disconnect on the SLS upper stage.

By Underlines Team

Focusing Facts

  1. The 322-ft SLS/Orion stack is scheduled to roll back to Pad 39B at Kennedy Space Center on 19 March 2026, with liftoff timed for 6:24 p.m. ET on 1 April and backup windows through 6 April.
  2. Crew quarantine begins 18 March; astronauts Reid Wiseman, Victor Glover, Christina Koch and Canadian Jeremy Hansen will spend 10 days on a free-return loop reaching 4,000–6,000 miles above the lunar surface.
  3. NASA ruled out another “wet dress rehearsal” to avoid additional tank cycles that shorten SLS tank life, choosing to fuel only on the actual launch attempt.

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