NASA's Artemis II Moon Mission
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NASA plans to test the planned leak repair with a second dress rehearsal fueling test later this month.
As NASA prepares to send astronauts around the moon, a critical dress rehearsal on Monday will reveal whether its rocket is truly ready to fly.
NASA says it can't try until March at the earliest to send a crewed spacecraft on a flight around the moon and back, due to hydrogen leaks during testing of the Artemis II rocket.