Live coverage: Ariane 5 blasts off with two Intelsat satellites

SpaceX launched a Falcon 9 rocket from Vandenberg Space Force Base, California, with 51 small satellites, hosted payloads, and orbital transfer vehicles heading into polar orbit on the Transporter 7 mission. Liftoff occurred at 11:48 p.m. PDT Friday (2:48 a.m. EDT; 0648 UTC Saturday).

The U.S. Air Force’s ninth Global Positioning System (GPS) 2F satellite, GPS 2F-9, is encapsulated in the Delta 4 rocket’s four-meter-diameter nose cone at a processing facility and then moved to the launch pad at Complex 37 for mating to its booster inside the mobile service tower.

SpaceX officials have postponed the launch of a Spanish-owned telecommunications satellite from Cape Canaveral planned for this weekend to conduct additional testing on the Falcon 9’s payload fairing pressurization system, the company announced Saturday.