NASA Delays Launch of Artemis II Lunar Mission
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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.
The two biggest commercial space companies are stepping up.
NASA completed a second crucial test on Thursday night as it prepares to launch the historic Artemis II mission that will send astronauts on a trip around the moon.