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iCosmos :: Cosmology Calculator :: Comoving Distance, Angular Diameter Distance, Luminosity Distance, Comoving Volume, Age of The Universe
描述: Cosmology Calculator
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网站主题: astronomy
Geek Credit is a digital form of the WATT community currency. It is similar to LETS but the balances information is distributed among users. The site provides a ...
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Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontline, NOVA, PBS ...
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The Christian Science Monitor is an international news organization that delivers thoughtful, global coverage via its website, weekly magazine, daily news briefing ...
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Homepage of a collaborative research project which uses gravitational lensing to examine the hypothesis that a significant part of dark matter consists of objects ...
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TED is a nonprofit devoted to Ideas Worth Spreading -- through TED.com, our annual conferences, the annual TED Prize and local TEDx events.
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Home page of the Sloan Digital Sky Survey
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Latest news and features on science issues that matter including earth, environment, and space. Get your science news from the most trusted source!
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An Open Archives Initiative (OAI) compliant archive of electronic preprints in physics, mathematics, computer science, and non-linear sciences. Created by Paul ...
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