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http://www.futura-sciences.com/scienc...fient-la-theorie-de-la-matiere-noire]
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http://www.space.com/34382-universe-h...ource=twitter.com&utm_campaign=buffer
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https://www.youtube.com/watch?v=GoW8Tf7hTGA
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https://vimeo.com/43797471
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http://www.slate.fr/story/108875/civilisations-extraterrestres-disparues
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http://www.futura-sciences.com/magazi...galaxies-produit-un-chainon-manquant]
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