NASA may roll back Artemis II rocket launch
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An interruption in the flow of helium to the upper stage may require that the rocket be removed from the launchpad for repairs.
Engineers were able to fully fuel NASA's Artemis II moon rocket without any signs of leaks like the ones that derailed an earlier dress rehearsal.
Just 24 hours after setting a March 6 launch date for the Artemis 2 mission, NASA announced Feb. 21 that a problem with the rocket could delay the launch.
The NASA Artemis II second wet dress rehearsal went far better than the first, NASA said, though it still found a few smaller glitches.