SpaceX called off the planned launch of a Falcon 9 rocket Thursday morning from the California coast with just moments to spare on the countdown clock.
In a tweet, SpaceX said the rocket "had an auto-abort just prior to T-0." In audio provided by SpaceX's live coverage, the countdown clock stopped at 00:03 and the rocket remained on the launch pad at Vandenberg Space Force Base northwest of Santa Barbara.
"Abort, abort, abort," a mission engineer repeated just before the command to start the engine ignition sequence.
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Details were not immediately available, but SpaceX said the rocket will be ready for another launch attempt at 7:29 a.m. California time Friday.
"Vehicle and payload are in good health," SpaceX tweeted.
Then on Friday, SpaceX again delayed the launch, citing more time required for vehicle preparations. The next window for launch will open no earlier than Saturday.
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The Space Development Agency's Tranche 0 Mission will deliver satellites into low-Earth orbit as part of a global military communication and missile warning system with tracking capabilities.
