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Dress-Rehearsal Countdown Underway for Critical Artemis II Moon Mission Rocket Fueling Test

The Artemis 2 wet dress rehearsal simulates critical launch procedures by loading 700,000 gallons of propellant and practicing countdown holds, enabling final launch readiness assessment.

  • On Monday, Feb. 2, NASA began a two-day Artemis II wet dress rehearsal fueling test at Launch Pad 39A of Kennedy Space Center, after a countdown started Saturday evening.
  • Cold weather forced NASA launch managers to shift the wet dress rehearsal fueling test and pushed the Artemis II mission launch to no earlier than Feb. 8 as a final qualification.
  • Teams will load more than 700,000 gallons of LOX/LH2 on Monday, with the 177-foot core stage and 45-foot ICPS in replenish mode by 4:30 p.m.
  • The test outcome will determine Artemis II's launch date with Feb. 8 as the earliest, making Feb. 6 and Feb. 7 unavailable and possibly delaying Crew-12 until Feb. 19.
  • Looking beyond this test, a slip to March would shift Artemis II’s nearly 10-day lunar flyby and delay Artemis III and human-landing system efforts to the March 3–11 alternate launch window.
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What to know about Artemis II's 'wet dress rehearsal'

As astronauts prepare to fly around the moon, critical testing must occur before there is "Go" for launch.

·Washington, United States
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Space broke the news in United States on Saturday, January 31, 2026.
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