Tech Digest daily roundup: Sir Richard Branson sells $300 million stake in Virgin Galactic

British billionaire Sir Richard Branson has sold around $300m (£216.8m) of Virgin Galactic stock, leveraging his biggest listed asset to prop up other parts of his business empire. The 71-year-old offloaded almost 10.5m shares, equivalent to around 4pc of the space-travel company, through his Virgin Investments Group. This is the third sale Sir Branson has…

Virgin Galactic confirms VSS Unity test flights

Virgin Galactic has confirmed that the next rocket-powered test flight of SpaceShipTwo Unity will be conducted on May 22, pending weather and technical checks. This follows the completion of a maintenance review of VMS Eve, the mothership jet aircraft which is designed to carry SpaceShipTwo to an altitude of approximately 50,000 feet. “Following a detailed…