Live coverage: Falcon 9 blasts off with X-37B mini-shuttle

Hours after calling off a launch of a different rocket from a nearby launch pad, SpaceX’s launch team loaded a Falcon 9 rocket with propellant Saturday and fired its nine main engines on pad 40 at Cape Canaveral Air Force Station, setting the stage for a liftoff with a South Korean military satellite as soon as Tuesday amid a busy stretch of missions for the California-based rocket company.

A Soyuz rocket took off from French Guiana on Thursday with the SES 15 communications satellite, a craft heading for an orbit more than 22,000 miles over the equator to provide airborne wifi and aeronautical navigation services over the United States.

SpaceX technicians offloaded a Dragon cargo capsule from its recovery ship Thursday after returning the thrice-flown supply freighter to the Port of Los Angeles, marking the final planned return of a Dragon spacecraft to the West Coast.