SpaceShipOne, the first privately built and piloted vehicle to reach space, hangs in the National Air and Space Museum's Milestones of Flight gallery between Charles Lindbergh's Spirit of St. Louis and Chuck Yeager's Bell X-1.

Launched from its White Knight mothership on June 21, 2004, the rocket-powered SpaceShipOne and its pilot,Mike Melvill, 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.