National Transportation Safety Board chairman Christopher Hart told reporters on Sunday that the tail of SpaceShip Two lifted prematurely, after the pilot changed the aerodynamic controls of the aircraft. This introduced pilot error into the realm of possibility for the cause of the incident.
After Friday's tragic mid-air explosion and crash of Virgin Galactic's Space Ship Two, rocket industry experts have come forward, saying the company was warned of dangers in using nitrous oxide fuel in its rockets. One expert even said she was "shocked, but not surprised" that the crash occurred.
Virgin Galactic's Space Ship Two, which was undergoing testing to be the first commercial tourism spacecraft, has crashed into the Mojave desert. One of its two pilots has died.