VSS Unity First Flight Test Sunday, 11 September 2016 Army, Asian, News, War VSS Unity, Virgin Galactic’s second SpaceShipTwo, underwent the first “captive carry” test flight on 9 September 2016. VSS Unity remained mated to the WhiteKnightTwo mothership (VMS Eve) throughout the entire 3 hour and 43 minute test flight. Tweet Subscribe to receive free email updates: