Launched from its White Knight mothership, the rocket- powered SpaceShipOne and its pilot ascended just beyond the atmosphere, arced through space (but not into orbit), then glided safely back to Earth. The flight lasted 24 minutes, with 3 minutes of weightlessness. With SpaceShipOne, private enterprise crossed the threshold into human spaceflight, previously the domain of government programs. The SpaceShipOne team aimed for a simple, robust, and reliable vehicle design that could make affordable space travel and tourism possible.