Q&A with George Whitesides, CEO of Virgin Galactic

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.

Two test pilots and their instructor flew Virgin Galactic’s winged spaceplane out of the discernible atmosphere Friday for the second time in nine weeks, a successful sub-orbital flight that moves Richard Branson’s company one step closer to its goal of launching paying passengers and payloads on brief forays into the weightlessness of space.

Investigators have plenty of evidence to sift through as they look into the cause of the fatal crash of a Virgin Galactic rocket plane, but the acting chair of the National Transportation Safety Board said the inquiry may take up to a year to complete.