Watch the Falcon 9 launch from pad 39A

SpaceX’s first Falcon Heavy rocket was loaded with propellants Saturday at Kennedy Space Center’s launch pad 39A, as engineers make progress preparing for a hold-down engine firing, and eventually liftoff of the huge commercial launcher.

A full-size prototype of SpaceX’s heavy-lift Starship launch vehicle soared high into the atmosphere Wednesday in a spectacular test flight over South Texas, and successfully guided itself to a beachside landing site before exploding at touchdown. Elon Musk, SpaceX’s founder and CEO, hailed the nearly seven-minute test flight as a success.

The Federal Aviation Administration approved a commercial license Friday for the first full-scale test flight of SpaceX’s nearly 400-foot-tall Super Heavy and Starship mega-rocket from South Texas, a launch SpaceX said could happen as soon as Monday morning.