Live coverage: Falcon 9 disintegrates after launch

A Falcon 9 rocket powered by a recycled first stage lit its main engines for a hold-down firing on a launch pad Tuesday at Vandenberg Air Force Base in California in preparation for launch with an Argentine radar satellite on a mission that will feature the first SpaceX booster landing on the West Coast.

SpaceX’s Falcon 9 rocket and Crew Dragon Endeavour spacecraft rolled out to pad 39A at NASA’s Kennedy Space Center on Friday. Hydraulics raised the 215-foot-tall rocket vertical on the historic launch pad in preparation for liftoff with four astronauts heading for the International Space Station.

SpaceX’s next Falcon 9 rocket ignited its Merlin main engines for several seconds Thursday at Kennedy Space Center’s pad 39A ahead of a planned launch next week.