Here's just a sampling of cutting-edge spacecraft:
• WhiteKnightTwo is a jet-powered carrier that will launch the SpaceShipTwo spacecraft; the two vehicles form a two-stage manned launch system, and Billionaire Richard Branson’s Virgin Galactic has already ordered a pair of WhiteKnightTwos. The ships will form the basis for Virgin Galactic's suborbital fleet, which will charge space tourists $200,000 a head for a 2-hour space flight. The first services will operate from Spaceport America in New Mexico, though other spaceports may open in the U.K. or Sweden.
• The Dragon, a free-flying, reusable spacecraft is being developed by SpaceX for NASA's Commercial Orbital Transportation Services program. Developed in 2005, the Dragon spacecraft consists of a pressurized capsule for personnel and an unpressurized trunk for transport of cargo.
• The Orion Crew Exploration Vehicle is NASA’s next-generation spacecraft. It will transport crews to and from the International Space Station, the moon and Mars and is being developed by Lockheed-Martin and Orbital Sciences Corp.
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