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The NASA Artemis II second wet dress rehearsal went far better than the first, NASA said, though it still found a few smaller glitches.
The Artemis II mission aims to send four astronauts — Reid Wiseman, Victor Glover, Christina Koch and Canadian astronaut Jeremy Hansen — on a flight around the far side of the moon and back.
The helium system on the SLS upper stage —officially known as the Interim Cryogenic Propulsion Stage (ICPS)—performed well during both of the Artemis II countdown rehearsals. “ Last evening, the team was unable to get helium flow through the vehicle. This occurred during a routine operation to repressurize the system,” Isaacman wrote.