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The year 1617 in science and technology involved some significant events. ==Astronomy== * Johannes Kepler begins to publish his ''Epitome astronomiæ Copernicanæ'' setting out his theory of elliptic orbits. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「1617 in science」の詳細全文を読む スポンサード リンク
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