{"id":2406,"date":"2024-12-03T10:55:17","date_gmt":"2024-12-03T09:55:17","guid":{"rendered":"https:\/\/www.scouts-europe.org\/scoutorama\/?p=2406"},"modified":"2025-02-11T12:02:06","modified_gmt":"2025-02-11T11:02:06","slug":"le-soleil-et-les-etoiles","status":"publish","type":"post","link":"https:\/\/www.scouts-europe.org\/scoutorama\/le-soleil-et-les-etoiles\/","title":{"rendered":"Le soleil et les \u00e9toiles"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2406\" class=\"elementor elementor-2406\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8041808 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8041808\" 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-7caf085\" data-id=\"7caf085\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-4eb47f7 elementor-widget elementor-widget-heading\" data-id=\"4eb47f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le soleil et les \u00e9toiles<\/h2>\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-721ab5e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"721ab5e\" 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-d46eb97\" data-id=\"d46eb97\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-7dfb63b elementor-widget elementor-widget-spacer\" data-id=\"7dfb63b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71a18ce elementor-widget elementor-widget-text-editor\" data-id=\"71a18ce\" 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>Notre soleil est une \u00e9toile, relativement jeune car les \u00e9toiles naissent, vivent et meurent. Simplement, leur cycle naissance-mort s\u2019\u00e9tend sur des milliards d\u2019ann\u00e9es.<\/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-f86d9d8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f86d9d8\" 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-14bf3b9\" data-id=\"14bf3b9\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-31064a6 elementor-widget elementor-widget-spacer\" data-id=\"31064a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9416390 elementor-widget elementor-widget-heading\" data-id=\"9416390\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Vie et mort d\u2019une \u00e9toile<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8e0aa7 elementor-widget elementor-widget-text-editor\" data-id=\"a8e0aa7\" 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 na\u00eet en regroupant la mati\u00e8re tr\u00e8s peu dense qui se retrouve un peu partout dans l\u2019Univers (essentiellement de l\u2019hydrog\u00e8ne). Les n\u00e9buleuses, sortes de nuages noirs vus du t\u00e9lescope, sont des p\u00e9pini\u00e8res d\u2019\u00e9toiles\u00a0: sous l\u2019action de la gravit\u00e9, la mati\u00e8re se regroupe et se met en rotation.<br class=\"manualbr\" \/>Lorsque la densit\u00e9 devient importante, la r\u00e9action thermonucl\u00e9aire se d\u00e9clenche et l\u2019\u00e9toile commence \u00e0 briller\u00a0: notre Soleil est une bombe H qui explose depuis des milliards d\u2019ann\u00e9es\u00a0!<br class=\"manualbr\" \/>Puis lorsque l\u2019\u00e9toile a br\u00fbl\u00e9 tout son combustible, elle meurt, soit en explosant, soit en s\u2019effondrant sur elle-m\u00eame.<\/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-74c3754 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"74c3754\" 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-a1f958d\" data-id=\"a1f958d\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\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-5e7b731 elementor-widget elementor-widget-spacer\" data-id=\"5e7b731\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90bafad elementor-widget elementor-widget-heading\" data-id=\"90bafad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Observation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-df8f482 elementor-widget elementor-widget-text-editor\" data-id=\"df8f482\" 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>Certaines \u00e9toiles vont par groupe de deux, voire trois ou quatre.<br class=\"manualbr\" \/>L\u2019\u00e9toile double la plus facile \u00e0 d\u00e9tecter\u00a0: le couple Mizar-Alcor qui compose le deuxi\u00e8me cheval de la Grande Ourse.<br class=\"manualbr\" \/>Les \u00e9toiles ont des couleurs diff\u00e9rentes, en fonction de leur temp\u00e9rature.<br \/>Ainsi notre Soleil est jaune, mais tu peux voir des \u00e9toiles bleues (Rigel d\u2019Orion), blanches (Sirius du Grand Chien, V\u00e9ga de la Lyre, R\u00e9gulus du Lion) ou rouges (Betelgeuse d\u2019Orion, Arcturus du Bouvier, Antar\u00e8s du Scorpion ou Ald\u00e9baran du Taureau).<\/p><p>Pour observer le Soleil (pour une \u00e9clipse par exemple), il ne faut jamais le fixer directement, et surtout pas \u00e0 travers des jumelles\u00a0: c\u2019est une op\u00e9ration dangereuse pour les yeux.<br class=\"manualbr\" \/>Il faut utiliser un verre recouvert de noir de fum\u00e9e ou regarder le reflet dans une bassine d\u2019eau.<\/p><p>\u00a0<\/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>Notre soleil est une \u00e9toile, relativement jeune car les \u00e9toiles naissent, vivent et meurent. Simplement, leur cycle naissance-mort s\u2019\u00e9tend sur des milliards d\u2019ann\u00e9es.<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[21,79],"tags":[],"class_list":["post-2406","post","type-post","status-publish","format-standard","hentry","category-connaissance-de-la-nature","category-le-ciel"],"_links":{"self":[{"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/posts\/2406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/comments?post=2406"}],"version-history":[{"count":10,"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/posts\/2406\/revisions"}],"predecessor-version":[{"id":5999,"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/posts\/2406\/revisions\/5999"}],"wp:attachment":[{"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/media?parent=2406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/categories?post=2406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.scouts-europe.org\/scoutorama\/wp-json\/wp\/v2\/tags?post=2406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}