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https://www.youtube.com/watch?v=GoW8Tf7hTGA
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http://www.futura-sciences.com/magazi...-vivraient-dans-les-amas-globulaires]
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http://www.futura-sciences.com/magazi...debuter-des-la-naissance-de-l-etoile]
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https://vimeo.com/43797471
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