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http://www.futura-sciences.com/magazi...dans-certaines-des-premieres-etoiles]
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http://prmarchenry.blogspot.fr/2014/05/etoiles.html
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http://www.futura-sciences.com/magazi...-vivraient-dans-les-amas-globulaires]
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https://www.youtube.com/watch?v=GoW8Tf7hTGA
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http://www.fredzone.org/un-signal-a-e...eed&utm_medium=feed&utm_campaign=feed
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https://www.science-et-vie.com/ciel-e...axies-grandissent-toutes-seules-10821
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https://www.facebook.com/notes/resona...araissent-en-premier/1650153955114575
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https://www.rtbf.be/info/societe/deta...rir-un-spectacle-fabuleux?id=10397315
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