On June 21, 2004, SpaceShipOne becomes the first privately owned spacecraft to reach an altitude of 100 kilometers, or about 62 miles, above the earth, the generally accepted point at which “space” begins.
Pilot Mike Melvill, the sole crew member, took SpaceShipOne, or SS1 for short, to an altitude of 100.124 kilometers, just past the invisible boundary line, before beginning the long glide back to earth. When he landed at what is now the Mojave Air and Space Port in Mojave, California, he had become the first commercial astronaut in history. The flight lasted 24 minutes.