01net (Digital)

01net (Digital)

1 Issue, No.983

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De la Lune sur la Terre

De la Lune sur la Terre
Des chercheurs de l’École polytechnique fédérale de Zurich viennent d’apporter un nouvel indice de l’origine terrestre de la Lune. Selon cette théorie, notre satellite serait le fruit d’une collision entre la Terre et un objet de la taille de Mars. Les débris éjectés se seraient agglomérés pour former la Lune. Or, en analysant des fragments de météorites lunaires trouvés en Antarctique, les chercheurs y ont découvert du néon et de l’hélium. Ces gaz nobles étaient emprisonnés dans des particules de verre, sans doute formées lors du refroidissement du magma, aux premières heures de la formation de la Lune. Ce verre a protégé les gaz des vents solaires qui frappent le satellite et qui auraient pu modifier leur structure physique. Puis, lorsqu’une météorite a frappé la Lune, ces fragments ont été…
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01net (Digital) - 1 Issue, No.983

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