From the time Kern County took over ownership of the airport, Mojave Air and Space Port was transformed into a civilian research center covering over 3300 acres and serving as the home of aeronautical breakthroughs such as SpaceShipOne. In 2004, this project won a $10 million price. Another breakthrough achieved at this location occurred when the Voyager became the first manned aircraft in history to fly around the world without stopping. The XCOR EZ Rocket was later developed here and operates using rubbing alcohol and liquid oxygen as fuel. In 2004, this facility became the first private airport to obtain a commercial spaceflight license.