{"id":15263,"date":"2021-12-23T15:54:37","date_gmt":"2021-12-23T15:54:37","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=15263"},"modified":"2022-01-13T17:47:48","modified_gmt":"2022-01-13T17:47:48","slug":"en-avril-1066-le-retour-de-la-comete-de-halley-fut-exceptionnel","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/12\/23\/en-avril-1066-le-retour-de-la-comete-de-halley-fut-exceptionnel\/","title":{"rendered":"En 1066, le passage de la com\u00e8te de Halley fut exceptionnel"},"content":{"rendered":"<p><strong>Au printemps 1066, la com\u00e8te de Halley illumina le ciel nocturne. Ce fut l&#8217;un des plus beaux passages de cet astre chevelu.<\/strong><\/p>\n<h5>Des conditions exceptionnelles :<\/h5>\n<p>En 1066, elle ne s&#8217;appelait pas encore com\u00e8te de Halley. Il faudra attendre la fin du XVIIe si\u00e8cle pour qu&#8217;elle prenne le nom de l&#8217;astronome britannique <a href=\"https:\/\/www.futura-sciences.com\/sciences\/personnalites\/astronomie-edmond-halley-719\/\" target=\"_blank\" rel=\"noopener\">Edmond Halley<\/a>. C&#8217;est lui qui d\u00e9terminera sa p\u00e9riodicit\u00e9 (76 ans environ) gr\u00e2ce \u00e0 ses calculs. Au Moyen \u00c2ge, personne ne sait encore ce qu&#8217;est une <a href=\"https:\/\/www.futura-sciences.com\/sciences\/definitions\/univers-comete-2498\/\" target=\"_blank\" rel=\"noopener\">com\u00e8te<\/a> et ne peut en imaginer la trajectoire dans le Syst\u00e8me solaire. Lorsqu&#8217;elle s&#8217;approche au cours du printemps 1066, la future com\u00e8te de Halley se trouve dans des conditions id\u00e9ales. Elle va passer \u00e0 seulement 15 millions de kilom\u00e8tres de la Terre. Par comparaison, lors de son passage en 1986, elle \u00e9tait \u00e0 63 millions de kilom\u00e8tres.<\/p>\n<figure id=\"attachment_15291\" aria-describedby=\"caption-attachment-15291\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/comet_halley.jpg\" rel=\"lightbox[15263]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-15291\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/comet_halley-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/comet_halley-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/comet_halley-1024x615.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/comet_halley-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/comet_halley.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-15291\" class=\"wp-caption-text\">Dessin d&#8217;un passage de la com\u00e8te de Halley, d&#8217;apr\u00e8s une gravure sur bois repr\u00e9sentant la Grande com\u00e8te de 1577 au-dessus de Prague. \u00a9 Christine Sasiad<\/figcaption><\/figure>\n<p>Pendant quelques nuits, son noyau va briller autant que <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/07\/26\/en-video-lincroyable-survol-de-jupiter-et-ganymede-par-juno\/\" target=\"_blank\" rel=\"noopener\">Jupiter<\/a>. Quant \u00e0 sa queue de gaz et de poussi\u00e8re, elle s&#8217;\u00e9tire sur un quart de la vo\u00fbte c\u00e9leste ! C&#8217;est un spectacle qui fascine et impressionne les hommes. \u00c0 une \u00e9poque o\u00f9 la <a href=\"https:\/\/www.futura-sciences.com\/sciences\/questions-reponses\/espace-quest-ce-pollution-lumineuse-12\/\" target=\"_blank\" rel=\"noopener\">pollution lumineuse<\/a> est inexistante, impossible de ne pas la remarquer.<\/p>\n<h5>La com\u00e8te immortalis\u00e9e :<\/h5>\n<p>Le passage de l&#8217;astre chevelu sera consign\u00e9 aux quatre coins du globe. La com\u00e8te appara\u00eet sur la tapisserie de Bayeux, une broderie qui raconte les exploits de Guillaume le Conqu\u00e9rant :<\/p>\n<p><iframe loading=\"lazy\" title=\"Un historien raconte la tapisserie de Bayeux\" width=\"474\" height=\"267\" src=\"https:\/\/www.youtube.com\/embed\/qhHXxSerGro?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>En Italie, les archives de la cath\u00e9drale de Viterbe mentionnent son observation tout au long du mois d&#8217;avril. Dans le <em><strong>Koryo-sa<\/strong><\/em>, un trait\u00e9 historique officiel relatant l&#8217;histoire de la p\u00e9ninsule cor\u00e9enne, elle est d\u00e9crite comme \u00e9tant aussi grande que la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/12\/04\/dossier-futura-quels-mysteres-nous-cache-encore-la-lune\/\" target=\"_blank\" rel=\"noopener\">Lune<\/a>. Son passage est \u00e9galement \u00e9voqu\u00e9 dans <strong><em>les Annales du royaume d&#8217;Irlande par les quatre ma\u00eetres<\/em><\/strong>, r\u00e9cits de l&#8217;histoire m\u00e9di\u00e9vale irlandaise :<\/p>\n<figure id=\"attachment_15264\" aria-describedby=\"caption-attachment-15264\" style=\"width: 298px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/chronique.jpg\" rel=\"lightbox[15263]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-15264\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/chronique-298x450.jpg\" alt=\"\" width=\"298\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/chronique-298x450.jpg 298w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/12\/chronique.jpg 495w\" sizes=\"auto, (max-width: 298px) 100vw, 298px\" \/><\/a><figcaption id=\"caption-attachment-15264\" class=\"wp-caption-text\">Page d&#8217;introduction de l&#8217;une des versions de la Chronique anglo-saxonne.<\/figcaption><\/figure>\n<p>Les moines anglais y font allusion dans leur <em><strong>Chronique anglo-saxonne<\/strong><\/em>, un manuel d&#8217;histoire du royaume diffus\u00e9 dans les monast\u00e8res. L&#8217;astre chevelu est m\u00eame dessin\u00e9 sur les parois rocheuses de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/12\/02\/chaco-canyon-nous-raconte-un-siecle-de-spectacles-celestes\/\" target=\"_blank\" rel=\"noopener\">Chaco Canyon<\/a> au Nouveau-Mexique :<\/p>\n<figure id=\"attachment_14995\" aria-describedby=\"caption-attachment-14995\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/11\/chaco2.jpg\" rel=\"lightbox[15263]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14995\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/11\/chaco2-450x277.jpg\" alt=\"\" width=\"450\" height=\"277\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/11\/chaco2-450x277.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/11\/chaco2-1024x630.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/11\/chaco2-768x473.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/11\/chaco2.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14995\" class=\"wp-caption-text\">Dessin des p\u00e9troglyphes du sentier Pe\u00f1asco Blanco sur le site de Chaco Canyon au Nouveau-Mexique. La com\u00e8te de Halley est figur\u00e9e en bas \u00a9 Peter Faris<\/figcaption><\/figure>\n<p>Cette ann\u00e9e-l\u00e0, le spectacle fut beaucoup plus impressionnant que celui de la r\u00e9cente com\u00e8te Leonard ; lire \u00e0 ce sujet <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/comete-comete-noel-donne-spectacle-apres-sursaut-activite-95688\/\" target=\"_blank\" rel=\"noopener\">La &#8220;com\u00e8te de No\u00ebl&#8221; se donne en spectacle apr\u00e8s un sursaut d&#8217;activit\u00e9<\/a>.<\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/12\/28\/une-comete-permet-de-dater-la-mort-dune-imperatrice-byzantine\/\" target=\"_blank\" rel=\"noopener\">Une com\u00e8te permet de dater la mort d\u2019une imp\u00e9ratrice byzantine<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/08\/25\/la-comete-neowise-immortalisee-par-le-telescope-hubble\/\" target=\"_blank\" rel=\"noopener\">La com\u00e8te Neowise immortalis\u00e9e par le t\u00e9lescope Hubble<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/11\/29\/comete-leonard-la-belle-voyageuse-passe-devant-des-galaxies\/\" target=\"_blank\" rel=\"noopener\">Com\u00e8te Leonard : flirt cosmique avec deux jolies galaxies<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>\u00a0ou\u00a0<a href=\"https:\/\/twitter.com\/cielmania\" target=\"_blank\" rel=\"noopener noreferrer\">Twitter<\/a>.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Au printemps 1066, la com\u00e8te de Halley illumina le ciel nocturne. Ce fut l&#8217;un des plus beaux passages de cet astre chevelu. Des conditions exceptionnelles : En 1066, elle ne s&#8217;appelait pas encore com\u00e8te de Halley. Il faudra attendre la fin du XVIIe si\u00e8cle pour qu&#8217;elle prenne le nom de l&#8217;astronome britannique Edmond Halley. C&#8217;est &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/12\/23\/en-avril-1066-le-retour-de-la-comete-de-halley-fut-exceptionnel\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">En 1066, le passage de la com\u00e8te de Halley fut exceptionnel<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":15291,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[786,3151],"class_list":["post-15263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-comete-de-halley","tag-tapisserie-de-bayeux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>En 1066, le passage de la com\u00e8te de Halley fut exceptionnel<\/title>\n<meta name=\"description\" content=\"Au printemps 1066, la com\u00e8te de Halley illumina le ciel nocturne. 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