Sir Richard Branson gestures to reporters as Virgin Galactic unveils its new SpaceShipTwo at the Mojave Spaceport.
The company said the crewmembers on board evaluated all of the spaceship's systems and functions during the six-hour, 12-minute flight.
The spaceship remained attached to the specially designed jet-powered mothership throughout the flight.
It's the second generation of the Burt Rutan-designed system that sent the first privately developed, manned rocket into space on June 21, 2004.
Virgin Galactic says the flight test program will run through 2011 before commercial operations begin.