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La neuvième Planète
L'exploration des planètes de notre système solaireTrès rapidement dans l'histoire de l'astronomie, une neuvième planète est envisagée. On l'appelle alors Planète X, puis Pluton. Neuf mondes, neuf planètes très différentes les unes des autres. Atmosphère, composition... comment se sont elles formées ?Durée : 49min
Video Length: 0
Date Found: February 22, 2008
Date Produced:
View Count: 12
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