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 scrubbed the launch of two O3b mPOWER satellites for Luxembourg-based SES on Monday from Cape Canaveral Space Station. The clock halted at 11 seconds.