{"id":155,"date":"2019-09-17T15:41:25","date_gmt":"2019-09-17T13:41:25","guid":{"rendered":"http:\/\/quasar95.fr\/?page_id=155"},"modified":"2026-04-25T15:38:48","modified_gmt":"2026-04-25T13:38:48","slug":"etoiles","status":"publish","type":"page","link":"https:\/\/quasar95.fr\/?page_id=155","title":{"rendered":"Etoiles"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"155\" class=\"elementor elementor-155\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d3a5052 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d3a5052\" 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-5511d2c\" data-id=\"5511d2c\" 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-029ffb0 elementor-widget elementor-widget-text-editor\" data-id=\"029ffb0\" 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>Une \u00e9toile est une boule massive et lumineuse de plasma li\u00e9e par sa propre gravit\u00e9 dont le diam\u00e8tre et la densit\u00e9 sont tels que la r\u00e9gion centrale, le c\u0153ur, atteint la temp\u00e9rature n\u00e9cessaire \u00e0 l&rsquo;amor\u00e7age de r\u00e9actions de fusion nucl\u00e9aire, c&rsquo;est-\u00e0-dire de l&rsquo;ordre de plusieurs millions de degr\u00e9s. Ces r\u00e9actions thermonucl\u00e9aires lib\u00e8rent de l&rsquo;\u00e9nergie lumineuse qui s&rsquo;oppose \u00e0 la contraction de l&rsquo;\u00e9toile sous sa propre gravit\u00e9. Pendant une grande partie de sa vie, avant que ses ressources d&rsquo;\u00e9nergie ne s&rsquo;\u00e9puisent, une \u00e9toile est en \u00e9quilibre hydrostatique sous l&rsquo;action de ces deux forces et se trouve sur la s\u00e9quence principale de ce qu&rsquo;on appelle le diagramme de Hertzsprung-Russell.<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-eba8223 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"eba8223\" 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-2efef45\" data-id=\"2efef45\" 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-e691ca4 elementor-widget elementor-widget-image\" data-id=\"e691ca4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"733\" src=\"https:\/\/quasar95.fr\/wp-content\/uploads\/2019\/12\/sirius-rec.jpg\" class=\"attachment-full size-full wp-image-460\" alt=\"\" srcset=\"https:\/\/quasar95.fr\/wp-content\/uploads\/2019\/12\/sirius-rec.jpg 800w, https:\/\/quasar95.fr\/wp-content\/uploads\/2019\/12\/sirius-rec-300x275.jpg 300w, https:\/\/quasar95.fr\/wp-content\/uploads\/2019\/12\/sirius-rec-768x704.jpg 768w, https:\/\/quasar95.fr\/wp-content\/uploads\/2019\/12\/sirius-rec-500x458.jpg 500w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\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 \u00e9toile est une boule massive et lumineuse de plasma li\u00e9e par sa propre gravit\u00e9 dont le diam\u00e8tre et la densit\u00e9 sont tels que la r\u00e9gion centrale, le c\u0153ur, atteint la temp\u00e9rature n\u00e9cessaire \u00e0 l&rsquo;amor\u00e7age de r\u00e9actions de fusion nucl\u00e9aire,<\/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-155","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages\/155","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=155"}],"version-history":[{"count":1,"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages\/155\/revisions"}],"predecessor-version":[{"id":880,"href":"https:\/\/quasar95.fr\/index.php?rest_route=\/wp\/v2\/pages\/155\/revisions\/880"}],"wp:attachment":[{"href":"https:\/\/quasar95.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}