SpaceX once again had to ground a scheduled launch.
Less than 30-seconds before liftoff Thursday morning, a Falcon 9 rocket automatically stopped the countdown.
It was the second scrubbed launch at Cape Canaveral in less than 12-hours.
Just before midnight Wednesday night, a United Launch Alliance Delta-4 Heavy aborted its liftoff because of technical problems.
No new launch dates have been announced for either mission.
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