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Concept for a gravity wheel inside a 21st century USS Enterprise. Visit BuildTheEnterprise.org to learn how to build the 1st generation USS Enterprise over the next 20 year with 1g gravity. It's a spacecraft, a spaceport, and a space station all in one!
http://io9.com/5909774/engineer-thinks-we-could-build-a-real-starship-enterprise-in-20-years
