NASA Pushes Artemis II Moonshot to March After Fuel Leak Fiasco

NASA has delayed the Artemis II mission, slated to send four astronauts on a 10-day journey around the moon, to no earlier than March 2026 following complications in a 'wet dress rehearsal' at Kennedy Space Center in Florida. The test, which began a simulated 49-hour countdown at 8:13 p.m. EST on Jan. 31, 2026, encountered liquid hydrogen leaks at the tail service mast umbilical interface on the Space Launch System (SLS) core stage. Engineers paused fueling twice—starting around 12:30 p.m. ET on Feb. 2—to troubleshoot, warming seals and adjusting propellant flow, but the leak spiked again, halting the countdown at T-minus 5 minutes, 15 seconds early Tuesday, Feb. 3. The issues mirror hydrogen leaks that plagued Artemis 1's 2022 prelaunch campaign, though teams successfully filled and topped off the SLS tanks with over 700,000 gallons of cryogenic propellants—liquid oxygen and hydrogen—before aborting. Additional hurdles included retorquing a recently replaced valve for Orion crew module hatch pressurization and extended closeout operations to secure the capsule. Cold weather below freezing further delayed tanking by requiring time to warm interfaces, impacting systems as noted in NASA's Feb. 3 update. Artemis II astronauts—NASA's Reid Wiseman, Victor Glover, and Christina Koch, alongside Canadian Space Agency's Jeremy Hansen—did not participate in the test and were released from quarantine started Jan. 21 in Houston. They had planned to travel to Florida on Feb. 3 but will re-enter quarantine two weeks before the next launch window. 'Engineers pushed through several challenges and met many planned objectives,' NASA stated, emphasizing safe propellant draining and Orion closeouts. 'NASA now will target March as the earliest possible launch opportunity for the flight test' to analyze data and conduct a second wet dress rehearsal, per the agency's blog on Feb. 3, 2026. Ground audio dropouts also occurred. This setback builds on prior delays, including a January cold snap pushing the test from Feb. 8. Artemis II marks NASA's first crewed Orion flight, a cornerstone of the Artemis program aiming for lunar south pole landings and Mars preparation.