Live coverage: Kennedy Space Center to reopen Friday

SpaceX scrubbed the planned launch from the Kennedy Space Center of a Falcon 9 rocket Friday with the company’s next 57 Starlink Internet satellites and a pair of commercial Earth-imaging surveillance satellites. Officials did not immediately confirm a new target launch date.

The 375th Delta rocket doubled the size of the Air Force’s “neighborhood watch” program today with the successful launch and deployment of two surveillance satellites into the vast geosynchronous belt of spacecraft around the planet.

Moving closer toward launch Monday with a South Korean communications satellite, a SpaceX Falcon 9 rocket fired its nine Merlin main engines Thursday on a launch pad in Florida in a key preflight readiness test.