VIDEO: First NTSB briefing on Virgin Galactic accident

SpaceX is gearing up for the first commercial launch of its powerful Falcon Heavy rocket as soon as early April with a communications satellite for Arabsat, and the U.S. Air Force hopes the two side boosters from the Arabsat mission can be safely landed and reused for the military’s first Falcon Heavy mission this summer, an exercise officials said will help certify previously-flown hardware for future national security launches.

Packed with food, hardware and experiments in biology, Earth science and space technology, a Falcon 9 rocket and Dragon supply ship lifted off Monday from Cape Canaveral destined for the International Space Station.

Virgin Galactic’s SpaceShipTwo rocket plane disintegrated in mid-air after two tail stabilizers prematurely extended, federal investigators said, a discovery that could shift the focus of the probe into the fatal crash away from the craft’s rocket motor.