Live coverage: Ariane 5 blasts off with two Intelsat satellites

SpaceX crews at Vandenberg Air Force Base in California rolled out a Falcon 9 rocket and lifted it vertical atop its launch pad ahead of a planned blastoff Wednesday with a Spanish radar observation satellite and two test probes for a planned global broadband Internet network.

NASA has placed an order with Boeing for the first operational mission to ferry a crew to the International Space Station in a new era of commercial human spaceflight.

Nine Merlin main engines on a SpaceX Falcon 9 rocket ignited at 12 p.m. EDT (1600 GMT) Friday, April 17, during a hold-down test-firing on launch pad 39A at NASA’s Kennedy Space Center in Florida.