Popular Science -
28 Nov 2012 21:57

The 'biggest breakthrough since the jet' could reach anywhere in the world in just four hours or power a spaceplane into orbit with no need for rocket stages. The Skylon, a concept spaceplane that (theoretically) could go from a standing start to orbit and back without disposing of any rocket stages, took another big step forward today as tests independently audited by the European Space Agency confirmed that the Sabre engine underpinning it is conceptually sound. It’s the second key endo...
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