l\u2019extinction des dinosaures.<\/a>\u00a0Aujourd\u2019hui, tous les objets c\u00e9lestes de plus d\u2019un kilom\u00e8tre sont identifi\u00e9s\u00a0: au-del\u00e0 de cette taille, un impact aurait des cons\u00e9quences mondiales. Un tel corps pourrait ravager un continent et creuser un crat\u00e8re g\u00e9ant.<\/p>\n Menace statistiquement faible<\/p>\n
Une m\u00e9t\u00e9orite s\u2019\u00e9crase en 1908 en Sib\u00e9rie, \u00e0 Toungouska. La for\u00eat a \u00e9t\u00e9 d\u00e9truite dans un rayon de 20 km.
\n DPA\/ABACA<\/p>\n
Des millions d\u2019ast\u00e9ro\u00efdes peuplent le Syst\u00e8me solaire, principalement dans la ceinture situ\u00e9e entre Mars et Jupiter. Ils ont commenc\u00e9 \u00e0 se former de la m\u00eame mani\u00e8re que les plan\u00e8tes sans jamais en avoir atteint la taille. Ils se retrouvent parfois projet\u00e9s sur\u2026<\/p>\n
\n Cet article est r\u00e9serv\u00e9 aux abonn\u00e9s. Il vous reste 94% \u00e0 d\u00e9couvrir.\n <\/p>\n
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