Photos: Delta 4-Heavy launch as seen from press site

A prototype for SpaceX’s Starship vehicle imploded during a pressurization test at the company’s facility in South Texas Friday night, an event captured on video by local residents.

The United Launch Alliance Atlas 5 rocket, standing 194 feet tall and and weighing 950,000 pounds, unleashes 1.5 million pounds of thrust from its main engine and two side-mounted boosters at 8:37 a.m. EDT today to launch the National Reconnaissance Office’s NROL-61 satellite from Cape Canaveral.

Virgin Orbit is setting modest expectations ahead of the company’s first attempt to reach orbit with a liquid-fueled air-launched rocket, emphasizing a hunger for flight data on the test launch, which could occur as soon as Monday off the coast of Southern California.