{"id":530,"date":"2022-07-06T17:58:40","date_gmt":"2022-07-06T15:58:40","guid":{"rendered":"http:\/\/quasar95.fr\/?page_id=530"},"modified":"2026-04-25T15:37:34","modified_gmt":"2026-04-25T13:37:34","slug":"cometes","status":"publish","type":"page","link":"https:\/\/quasar95.fr\/?page_id=530","title":{"rendered":"Com\u00e8tes"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"530\" class=\"elementor elementor-530\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2674b1a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2674b1a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6463a4b\" data-id=\"6463a4b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3564a4e elementor-widget elementor-widget-text-editor\" data-id=\"3564a4e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium wp-image-532\" src=\"https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-300x215.jpg\" alt=\"N\u00e9owise\" width=\"300\" height=\"215\" srcset=\"https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-300x215.jpg 300w, https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-768x549.jpg 768w, https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-1024x732.jpg 1024w, https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-500x358.jpg 500w, https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-800x572.jpg 800w, https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-1280x915.jpg 1280w, https:\/\/quasar95.fr\/wp-content\/uploads\/2022\/07\/comete-1920x1373.jpg 1920w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>Une com\u00e8te est, en astronomie, un petit corps c\u00e9leste constitu\u00e9 d&rsquo;un noyau de glace et de poussi\u00e8re en orbite (sauf perturbation) autour d&rsquo;une \u00e9toile. Lorsque son orbite, qui a g\u00e9n\u00e9ralement la forme d&rsquo;une ellipse tr\u00e8s allong\u00e9e, l&rsquo;am\u00e8ne pr\u00e8s de cette \u00e9toile (par exemple le Soleil dans le syst\u00e8me solaire), la com\u00e8te est expos\u00e9e \u00e0 diverses forces \u00e9manant de cette derni\u00e8re : vent stellaire, pression de radiation et gravitation. Le noyau s&rsquo;entoure alors d&rsquo;une sorte de fine atmosph\u00e8re brillante constitu\u00e9e de gaz et de poussi\u00e8res, appel\u00e9e chevelure ou coma, souvent prolong\u00e9e de deux tra\u00een\u00e9es lumineuses compos\u00e9es \u00e9galement de gaz et de poussi\u00e8res, les queues (une de gaz ionis\u00e9 et une de poussi\u00e8res), qui peuvent s&rsquo;\u00e9tendre sur plusieurs dizaines de millions de kilom\u00e8tres. <a href=\"https:\/\/www.minorplanetcenter.net\">Le Centre des plan\u00e8tes mineures<\/a> r\u00e9pertorie au 14 janvier 2020 4 352 com\u00e8tes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Une com\u00e8te est, en astronomie, un petit corps c\u00e9leste constitu\u00e9 d&rsquo;un noyau de glace et de poussi\u00e8re en orbite (sauf perturbation) autour d&rsquo;une \u00e9toile. Lorsque son orbite, qui a g\u00e9n\u00e9ralement la forme d&rsquo;une ellipse tr\u00e8s allong\u00e9e, l&rsquo;am\u00e8ne pr\u00e8s de cette<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-530","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages\/530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quasar95.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=530"}],"version-history":[{"count":3,"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages\/530\/revisions"}],"predecessor-version":[{"id":827,"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages\/530\/revisions\/827"}],"wp:attachment":[{"href":"https:\/\/quasar95.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}