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The requested URL "https://sciencesdelaterre.ens-lyon.fr/enseignements/l3/semestre-2/le-systeme-solaire/archive-2011-2012/le-blog-du-systeme-solaire/figures/images-article-melissa/formules/formule-4.jpg?amp%3Bmonth%3Aint=12&cl=en&orig_query=set_language%3Den%26cl%3Den%26amp%3B&set_language=en&year%3Aint=2020" was not found on this server.