Live coverage: NASA planet-hunting satellite launched by SpaceX

United Launch Alliance is set to try again to launch a Delta 4-Heavy rocket and a classified U.S. government spy satellite Thursday after delays of more than three months caused by persistent issues with the mission’s launch pad.

The first official launch weather outlook issued Tuesday by U.S. Air Force meteorologists predicts an 80 percent chance of favorable conditions for the predawn liftoff Saturday of SpaceX’s Crew Dragon spacecraft on a test flight to the International Space Station.

SpaceX ignited a reused Falcon 9 first stage booster at Cape Canaveral’s Complex 40 launch pad Wednesday ahead of a planned space station resupply launch Dec. 12, a major step in restoring the repaired facility to service after a catastrophic explosion interrupted operations there last year.