Live updates from the July 21 late-countdown scrub of a SpaceX SES O3b mPOWER launch attempt from Cape Canaveral Space Force Station in Florida.

SpaceX was set to light up the Florida skies Monday evening with the launch of SES's O3b mPOWER mission from Cape Canaveral. However, the rocket did not take flight.

SpaceX aborted the launch of two communications satellites just before liftoff on Monday evening (July 21). A Falcon 9 rocket topped with two of SES' O3b mPOWER internet spacecraft was set to launch from Florida's Cape Canaveral Space Force Station at 5:27 p.m. EDT (2127 GMT) on Monday.