Virgin Galactic, which will be operating SpaceShipTwo, will be only one of several spacelines. The competitors for Virgin include the Russians, Bezos's Blue Origin, and possibly Rocketplane Kistler. And likely a couple of others who are smart enough not to tell people what they are doing!
Related Authors: Henry Ford Leonardo da Vinci Bill Gates Jim Rohn Arnold Schwarzenegger John Muir Thomas Paine