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Science & Fiction: “In 1676, the Danish astronomer Ole Roemer...
Je ne savais pas comment la vitesse de la lumière avait été découverte - ni quand. C'est étonnant.
science
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astronomie
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histoire
December 7, 2016 at 8:24:04 PM GMT+1 ·
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http://scienceetfiction.tumblr.com/post/154166676419/in-1676-the-danish-astronomer-ole-roemer
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