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http://www.sciencesetavenir.fr/espace...le-quelques-surprises.html?xtor=RSS-9
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https://www.nasa.gov/feature/new-plut...-nasa-s-new-horizons-it-s-complicated
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http://www.notre-planete.info/actualites/987-systeme_solaire_8_planetes
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http://www.theverge.com/2013/7/10/451...-solar-system-has-a-tail-nasa-reveals
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