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NASA Halts Artemis II Fueling Test After Hydrogen Leak Detected

NASA halted the Artemis II wet dress rehearsal due to liquid hydrogen leaks, aiming for a March launch after extensive data review and system troubleshooting, officials said.

  • On Monday, NASA halted fueling of the Space Launch System rocket at Kennedy Space Center after detecting a hydrogen leak and ended the countdown with around 5 minutes and 15 seconds remaining.
  • At an umbilical plate where a fuel line from the launch pad connects to the SLS rocket's first stage, engineers found a leak after the tank was about 55% and 77% full, using workaround methods from the maiden flight to reseat seals.
  • Teams had loaded more than 700,000 gallons of propellant into the 322-foot SLS rocket while the Artemis II crew monitored remotely from Houston after quarantining since Jan. 21.
  • With the countdown halted, the countdown ended before the rocket switched to internal power or activated auxiliary power units; launch controllers began draining the SLS propellant tanks and NASA managers scheduled a Tuesday press briefing to review early test results.
  • With February's tight window, the Artemis II mission faces launch dates of Feb. 8, 10 and 11, with March 6–9 and March 11 available if delays persist.
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The US space agency NASA has postponed its mission around the Moon again - this time by a month. The crew was supposed to launch next week, but during a test of the Artemis II rocket, fuel began to leak. The launch has been postponed to March, with NASA not yet giving an exact date.

·Ljubljana, Slovenia
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Times of India broke the news in India on Monday, February 2, 2026.
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