{"id":104442,"date":"2026-04-20T11:09:37","date_gmt":"2026-04-20T11:09:37","guid":{"rendered":"https:\/\/www.africa-press.net\/cameroun\/politique\/conan-la-bacterie-peut-resister-a-un-impact-dasteroide"},"modified":"2026-05-06T11:37:26","modified_gmt":"2026-05-06T11:37:26","slug":"conan-la-bacterie-peut-resister-a-un-impact-dasteroide","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/conan-la-bacterie-peut-resister-a-un-impact-dasteroide","title":{"rendered":"\u00ab\u00a0Conan la bact\u00e9rie\u00a0\u00bb peut r\u00e9sister \u00e0 un impact d’ast\u00e9ro\u00efde"},"content":{"rendered":"

Africa-Press – Cameroun. <\/strong> <\/span>On la savait de\u0301ja\u0300 re\u0301sistante aux rayonnements ionisants, aux ultraviolets, a\u0300 la dessiccation, a\u0300 la famine, au froid extre\u0302me ou au vide de l’espace… Voila\u0300 que Deinococcus radiodurans – surnomme\u0301e \u00ab\u00a0Conan la bacte\u0301rie\u00a0\u00bb – peut survivre aussi a\u0300 un impact d’aste\u0301roi\u0308de !<\/p>\n

Pour le prouver, des scientifiques de l’universite\u0301 Johns-Hopkins (E\u0301tats-Unis) ont place\u0301 des colonies de ce fascinant organisme entre deux plaques me\u0301talliques soumises a\u0300 de puissantes ondes de choc.<\/p>\n

De quoi relancer l’hypothe\u0300se de la panspermie<\/b><\/p>\n

A\u0300 une pression de 1,3 gigapascal (GPa) – soit plus de dix fois celle exerce\u0301e au fond de la fosse des Mariannes, le point le plus bas des oce\u0301ans terrestres -, 95 % des microbes demeuraient indemnes. Le taux de survie atteignait encore 60 % a\u0300 2,4 GPa. Et 20 % a\u0300 3 GPa, une pression similaire a\u0300 celle produite par l’impact d’un objet ce\u0301leste sur une surface plane\u0301taire.<\/p>\n

De quoi relancer l’hypothe\u0300se de la panspermie: si des bacte\u0301ries de ce type avaient existe\u0301 sur Mars il y a 4 milliards d’anne\u0301es, elles auraient pu re\u0301sister a\u0300 la chute d’un aste\u0301roi\u0308de, e\u0302tre e\u0301jecte\u0301es dans l’espace avant de tomber sur notre plane\u0300te pour l’ensemencer.<\/p>\n

Retrouvez plus d\u2019actualit\u00e9s et d\u2019analyses sur Cameroun<\/span> sur le site Africa Press<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Cameroun. On la savait de\u0301ja\u0300 re\u0301sistante aux rayonnements ionisants, aux ultraviolets, a\u0300 la dessiccation, a\u0300 la famine, au froid extre\u0302me ou au vide de l’espace… Voila\u0300 que Deinococcus radiodurans – surnomme\u0301e \u00ab\u00a0Conan la bacte\u0301rie\u00a0\u00bb – peut survivre aussi a\u0300 un impact d’aste\u0301roi\u0308de ! Pour le prouver, des scientifiques de l’universite\u0301 Johns-Hopkins (E\u0301tats-Unis) ont […]<\/p>\n","protected":false},"author":82,"featured_media":104441,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[49],"class_list":["post-104442","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-cameroun"],"yoast_head":"\n"Conan la bact\u00e9rie" peut r\u00e9sister \u00e0 un impact d'ast\u00e9ro\u00efde - Cameroun<\/title>\n<meta name=\"description\" content=\"-article-header-tag"> Africa-Press - Cameroun. 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