Entrepreneur and adventurer Sir Richard Branson already has put his money where his mouth is as far as his interest in commercial human spaceflight goes, investing a small chunk of his personal fortune in the Virgin Galactic space tourism venture.Next year he plans to lend his body to the cause as well, flying as one of the first passengers - possibly with his grown children, Holly and Sam - aboard Virgin Galactic's SpaceShipTwo rocket plane.
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