NASA Pushes Artemis II Launch to March After Hydrogen Leak in Wet Dress Rehearsal
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During Monday’s wet dress rehearsal at Kennedy Space Center, engineers halted fueling after detecting excessive liquid hydrogen buildup near the SLS core/tail service mast umbilical, stopping a countdown that had been loading more than 700,000 gallons of super-cold liquid hydrogen and liquid oxygen and filling only about half the core. The leak — along with earlier cold-weather delays — moved Artemis II out of the February window to no earlier than March, with the four-person crew monitoring from quarantine in Houston while launch teams apply workaround techniques developed after prior SLS hydrogen issues.
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