SpaceX got to within 15 seconds of a launch from Cape Canaveral on Monday, but a "hold, hold, hold" call from among the mission control team members forced an abort. They were back for another try on Tuesday and pulled it off.

The SpaceX Falcon 9 rocket will deploy a payload of Starlink internet satellites in low-Earth orbit after ascending along a southeasterly trajectory.

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.