Virgin Space : First rocket - powered test flight completed for SpaceShipTwo . Test was not a space flight , but Virgin says it anticipates a flight by year 's end . The aircraft broke the sound barrier during propulsion , Virgin Galactic says .
Virgin Galactic : First rocket-powered test flight completed for SpaceShipTwo . Test was not a space flight , but company says it anticipates space flight by year 's end . The aircraft broke the sound barrier during propulsion , Virgin Galactic says .