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Update: NASA canceled this launch due to a hydrogen leak. The next attempt could be Monday or Tuesday evening, but depends on what technicians need to do to fix the problem.
Follow live as NASA targets the launch of its massive Space Launch System rocket on Saturday, September 3 at 2:17 p.m. EDT on a mission to the moon known as Artemis I.
The 322-foot rocket and Orion capsule has a two-hour window to fly from Florida’s Kennedy Space Center, where weather conditions are expected to be 60% “go” on takeoff. If they need it, teams have a two-hour window to fly from pad 39B.