{"id":1783,"date":"2015-03-30T04:58:57","date_gmt":"2015-03-30T04:58:57","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=1783"},"modified":"2015-04-04T06:02:06","modified_gmt":"2015-04-04T06:02:06","slug":"la-nebuleuse-du-crabe-premier-objet-messier","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/30\/la-nebuleuse-du-crabe-premier-objet-messier\/","title":{"rendered":"La n\u00e9buleuse du Crabe, premier objet Messier"},"content":{"rendered":"

En l’an 1054 une \u00e9toile nouvelle s’invita dans la constellation du Taureau (connue pour abriter le c\u00e9l\u00e8bre amas d’\u00e9toiles des Pl\u00e9iades<\/a>). Visible pendant des mois sans instrument, son apparition fut mentionn\u00e9e par des observateurs chinois et arabes. Il s’agissait de l’explosion d’une \u00e9toile agonisante, une supernova<\/a> qui entra dans l’histoire sous l’appellation SN 1054. Cette supernova a ensuite fait place \u00e0 un pulsar <\/a>et surtout \u00e0 une n\u00e9buleuse en perp\u00e9tuelle expansion, la n\u00e9buleuse du Crabe.<\/p>\n

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

700 ans plus tard, l’astronome fran\u00e7ais Charles Messier red\u00e9couvrit la n\u00e9buleuse par hasard, alors qu’il \u00e9tait \u00e0 la recherche de la com\u00e8te de Halley<\/a>, dont on avait pr\u00e9dit le retour. Pour \u00e9viter de confondre les objets n\u00e9buleux avec la com\u00e8te, Messier d\u00e9cida de faire la liste de ces objets. Ainsi naquit le c\u00e9l\u00e8bre catalogue Messier<\/a> dont le premier objet est la n\u00e9buleuse du Crabe (M 1).<\/p>\n

L’image ci-dessus est un compositage de deux prises de vue\u00a0: l’une en infrarouge prise par le t\u00e9lescope spatial Herschel<\/a> (ESA), l’autre dans le domaine visible par le t\u00e9lescope spatial am\u00e9ricain Hubble<\/a> (NASA). L’image d\u2019Herschel en rouge trahit le rougeoiement de la poussi\u00e8re cosmique (qui repr\u00e9sente \u00e0 peu pr\u00e8s un quart de la masse du Soleil <\/a>au sein de la n\u00e9buleuse du Crabe), alors que l’image de Hubble en bleu r\u00e9v\u00e8le la pr\u00e9sence d\u2019oxyg\u00e8ne et de soufre gazeux.<\/p>\n","protected":false},"excerpt":{"rendered":"

En l’an 1054 une \u00e9toile nouvelle s’invita dans la constellation du Taureau (connue pour abriter le c\u00e9l\u00e8bre amas d’\u00e9toiles des Pl\u00e9iades). Visible pendant des mois sans instrument, son apparition fut mentionn\u00e9e par des observateurs chinois et arabes. Il s’agissait de l’explosion d’une \u00e9toile agonisante, une supernova qui entra dans l’histoire sous l’appellation SN 1054. Cette … Continuer la lecture de La n\u00e9buleuse du Crabe, premier objet Messier<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":1785,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[133,819,399,820,403,821,544],"class_list":["post-1783","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-charles-messier","tag-nebuleuse-du-crabe","tag-pulsar","tag-sn-1054","tag-supernova","tag-telescope-spatial-herschel","tag-telescope-spatial-hubble"],"yoast_head":"\nLa n\u00e9buleuse du Crabe, premier objet Messier<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/30\/la-nebuleuse-du-crabe-premier-objet-messier\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La n\u00e9buleuse du Crabe, premier objet Messier\" \/>\n<meta property=\"og:description\" content=\"En l’an 1054 une \u00e9toile nouvelle s’invita dans la constellation du Taureau (connue pour abriter le c\u00e9l\u00e8bre amas d’\u00e9toiles des Pl\u00e9iades). 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