Dark matter - Wikipedia, the free encyclopedi...
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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Orbital Mechanics
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WIKISKY.ORG
Interactive online sky map ... WIKISKY.ORG. Stars That Shine Forever. Supernova: Chich. Nova: Pasquale Nanula. HE IT FR ZH RU SV PT SR PL DE HU ES JA EN KO TR EL ...
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NOVA | The Elegant Universe | Watch the Program | PBS
Following the broadcast of the NOVA mini-series The Elegant Universe, watch all three episodes here, divided into chapters, available in the QuickTime or RealPlayer ...
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Interplanetary Transport Network - Wikipedia, the free encyclopedia
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The Official String Theory Web Site
For the non-specialist, including audio interviews with string theorists, and a tour of the Big Bang.
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Universe Today
Presents space news from around the Internet. ... universetoday.com. Submit search form. Email newsletter. Daily Edition. Weekly Edition ...
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NASA Science - Science Mission Directorate
Research news from NASA.
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NASA - Science@NASA
Research news from NASA.
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Amazing Space
Set of web-based activities primarily designed for classroom use.
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Holographic principle - Wikipedia, the free encyclopedia
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