Photos: Atlas 5 rocket aims for International Space Station

The center section of SpaceX’s first Falcon Heavy rocket has been test-fired at the launch company’s test facility in Central Texas, a sign of progress toward the behemoth booster’s long-delayed maiden mission scheduled some time in the final months of 2017.

Watch a 4K video replay of the launch of a SpaceX Falcon 9 rocket and Cargo Dragon spacecraft Dec. 6 on a resupply mission to the International Space Station.

Making its first flight, a privately-funded air-launched rocket developed and built by Richard Branson’s Virgin Orbit failed to reach space Monday after release from the company’s modified 747 carrier airplane over the Pacific Ocean.