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Article about the matter that can't be detected by its emitted radiation but whose presence can be inferred from gravitational effects on visible matter such as stars and galaxies.
http://en.wikipedia.org/wiki/Dark_matter
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Official site for NASA, the United States space agency, providing current information on its robotic and manned space exploration missions.
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Contains maps of the universe zooming out from the nearest stars to the entire visible universe.
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Zoom from the edge of the universe to the quantum foam of spacetime! ... Enigmata: Genu's Revenge The Enigmata galaxy is in peril, you and Neko are the only ones ...
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