{"id":4113,"date":"2015-11-11T09:32:56","date_gmt":"2015-11-11T09:32:56","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=4113"},"modified":"2015-11-18T05:47:44","modified_gmt":"2015-11-18T05:47:44","slug":"admirez-les-taurides-de-spectaculaires-etoiles-filantes","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/11\/11\/admirez-les-taurides-de-spectaculaires-etoiles-filantes\/","title":{"rendered":"Admirez les Taurides, de spectaculaires \u00e9toiles filantes"},"content":{"rendered":"

Peu nombreuses, les \u00e9toiles filantes de l’essaim des Taurides sont parfois extr\u00eamement brillantes. Le maximum d’activit\u00e9 est pr\u00e9vu le 12 novembre.<\/strong><\/p>\n

Chaque ann\u00e9e la Terre, dans sa folle course autour du Soleil, traverse des nuages de petites particules abandonn\u00e9es par des com\u00e8tes sur leur orbite. En se consumant dans notre atmosph\u00e8re, ces poussi\u00e8res com\u00e9taires produisent des \u00e9toiles filantes<\/a>. L’essaim le plus c\u00e9l\u00e8bre est celui des Pers\u00e9ides <\/a>(constitu\u00e9 des poussi\u00e8res abandonn\u00e9es par la com\u00e8te 109P\/Swift-Tuttle) mais il en existe beaucoup d’autres.<\/p>\n

\"tauride\"<\/a><\/p>\n

L’essaim des Taurides (dont les m\u00e9t\u00e9ores semblent jaillir de la constellation du Taureau<\/a>, d’o\u00f9 leur nom) est actif pendant 2 mois, du 25 septembre au 25 novembre. Les m\u00e9t\u00e9ores ont un taux horaire qui ne d\u00e9passe pas 5 au maximum d’activit\u00e9 le 12 novembre, mais ils sont parfois particuli\u00e8rement lumineux . L’image ci-dessus en est un bel exemple : alors qu’il photographiait des aurores bor\u00e9ales en Am\u00e9rique du Nord<\/a> le 3 novembre, le photographe\u00a0Rocky Raybell a vu passer ce bolide issu de l’essaim des Taurides.<\/p>\n

Les poussi\u00e8res qui constituent l’essaim des Taurides ont \u00e9t\u00e9 abandonn\u00e9es par la com\u00e8te 2P\/Encke. Comme son nom ne l’indique pas cet astre chevelu\u00a0a \u00e9t\u00e9 d\u00e9couvert par l’astronome fran\u00e7ais Pierre M\u00e9chain le 17 janvier 1786 depuis Paris, mais on a pr\u00e9f\u00e9r\u00e9 le nommer en l’honneur de J. F. Encke, l’astronome allemand qui confirma sa p\u00e9riodicit\u00e9. 2P\/Encke, qui repasse tous les 3,3 ans, est la seconde com\u00e8te p\u00e9riodique d\u00e9couverte apr\u00e8s 1P\/Halley<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Peu nombreuses, les \u00e9toiles filantes de l’essaim des Taurides sont parfois extr\u00eamement brillantes. Le maximum d’activit\u00e9 est pr\u00e9vu le 12 novembre. Chaque ann\u00e9e la Terre, dans sa folle course autour du Soleil, traverse des nuages de petites particules abandonn\u00e9es par des com\u00e8tes sur leur orbite. En se consumant dans notre atmosph\u00e8re, ces poussi\u00e8res com\u00e9taires produisent … Continuer la lecture de Admirez les Taurides, de spectaculaires \u00e9toiles filantes<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":4120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[85],"tags":[1352,132,723,296,1351,1350],"class_list":["post-4113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-meteores","tag-comete-2pencke","tag-constellation-du-taureau","tag-essaim-meteoritique","tag-etoile-filante","tag-rocky-raybell","tag-taurides"],"yoast_head":"\nAdmirez les Taurides, de spectaculaires \u00e9toiles filantes<\/title>\n<meta name=\"description\" content=\"Peu nombreuses, les \u00e9toiles filantes de l'essaim des Taurides sont parfois extr\u00eamement brillantes. 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