{"id":6761,"date":"2014-01-31T08:46:11","date_gmt":"2014-01-31T06:46:11","guid":{"rendered":"http:\/\/tronic.fr\/maitronaute\/?page_id=6761"},"modified":"2014-02-13T11:46:08","modified_gmt":"2014-02-13T09:46:08","slug":"voie-lactee","status":"publish","type":"page","link":"https:\/\/saturna.fr\/maitronaute\/astronomie\/lunivers\/galaxie\/voie-lactee\/","title":{"rendered":"La Voie lact\u00e9e"},"content":{"rendered":"<div id=\"attachment_6762\" style=\"width: 710px\" class=\"wp-caption alignright\"><a href=\"http:\/\/tronic.fr\/blog\/wp-content\/uploads\/2014\/01\/1024px-Guisard_-_Milky_Way.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6762\" class=\"size-large wp-image-6762 \" alt=\"1024px-Guisard_-_Milky_Way\" src=\"http:\/\/tronic.fr\/blog\/wp-content\/uploads\/2014\/01\/1024px-Guisard_-_Milky_Way-700x400.jpg\" width=\"700\" height=\"400\" \/><\/a><p id=\"caption-attachment-6762\" class=\"wp-caption-text\">Une partie de la Voie lact\u00e9e.<\/p><\/div>\n<p>La <b>Voie lact\u00e9e<\/b> (appel\u00e9e aussi \u00ab\u00a0<b>notre galaxie<\/b>\u00a0\u00bb, ou parfois simplement \u00ab\u00a0<b>la Galaxie<\/b>\u00a0\u00bb, avec une majuscule) est la <strong><a title=\"Galaxie\" href=\"http:\/\/tronic.fr\/maitronaute\/index.php\/astronomie\/galaxie\/\">galaxie<\/a><\/strong> dans laquelle se situe le <strong><a title=\"Syst\u00e8me solaire\" href=\"http:\/\/tronic.fr\/maitronaute\/index.php\/astronomie\/systeme-solaire\/\">Syst\u00e8me solaire<\/a><\/strong> (et donc la <strong>Terre<\/strong>). Elle est partiellement visible dans de bonnes conditions d\u2019observation (absence de pollution lumineuse), sous la forme d\u2019une bande plus claire dans le ciel nocturne.<\/p>\n<p>Sa forme g\u00e9n\u00e9rale est un <span style=\"color: #ff6600;\"><strong>disque<\/strong><\/span> de 80\u00a0000\u00a0<a title=\"Lexique\" href=\"http:\/\/tronic.fr\/maitronaute\/index.php\/astronomie\/lexique\/\">ann\u00e9es-lumi\u00e8re<\/a> de diam\u00e8tre comportant un bulbe (renflement) central. Elle contient, selon les derniers relev\u00e9s du t\u00e9lescope spatial Kepler, environ 100\u00a0milliards d\u2019<strong><a title=\"\u00c9toile\" href=\"http:\/\/tronic.fr\/maitronaute\/index.php\/astronomie\/lunivers\/etoile-soleil\/\">\u00e9toiles<\/a><\/strong>.<\/p>\n<p>L\u2019\u00e9toile la plus proche du Soleil, <a title=\"Proxima Centauri\" href=\"http:\/\/fr.wikipedia.org\/wiki\/Proxima_Centauri\" target=\"_blank\">Proxima Centauri<\/a>, se trouve \u00e0 4,22\u00a0ann\u00e9es-lumi\u00e8re.<\/p>\n<p>Les scientifiques estiment que<strong><span style=\"color: #ff6600;\"> la Voie lact\u00e9e s&rsquo;est form\u00e9e il y a 13,2 milliards d&rsquo;ann\u00e9es<\/span><\/strong>, soit l&rsquo;\u00e2ge approximatif de l&rsquo;Univers.<\/p>\n<p>La Voie lact\u00e9e est une galaxie spirale, mais elle poss\u00e8de \u00e9galement une barre centrale, ce qui en fait en r\u00e9alit\u00e9 une <span style=\"color: #ff6600;\"><strong>galaxie spirale barr\u00e9e<\/strong><\/span>.<\/p>\n<p>D&rsquo;autres galaxies lointaines :<\/p>\n<ul>\n<li><a href=\"http:\/\/fr.wikipedia.org\/wiki\/NGC_4414\" target=\"_blank\">La galaxie NGC 4414<\/a><\/li>\n<li><a href=\"http:\/\/fr.wikipedia.org\/wiki\/M51_%28galaxie%29\" target=\"_blank\">La galaxie M51<\/a><\/li>\n<li><a href=\"http:\/\/fr.wikipedia.org\/wiki\/Galaxie_d%27Androm%C3%A8de\" target=\"_blank\">La galaxie d&rsquo;Androm\u00e8de (M31)<\/a><\/li>\n<\/ul>\n<div id=\"attachment_6905\" style=\"width: 683px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/tronic.fr\/blog\/wp-content\/uploads\/2014\/02\/voielactee-dwg.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6905\" class=\"size-full wp-image-6905\" alt=\"La Voie Lact\u00e9e\" src=\"http:\/\/tronic.fr\/blog\/wp-content\/uploads\/2014\/02\/voielactee-dwg.jpg\" width=\"673\" height=\"437\" \/><\/a><p id=\"caption-attachment-6905\" class=\"wp-caption-text\">La Voie Lact\u00e9e<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La Voie lact\u00e9e (appel\u00e9e aussi \u00ab\u00a0notre galaxie\u00a0\u00bb, ou parfois simplement \u00ab\u00a0la Galaxie\u00a0\u00bb, avec une majuscule) est la galaxie dans laquelle se situe le Syst\u00e8me solaire (et donc la Terre). Elle est partiellement visible dans&#46;&#46;&#46;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":6758,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6761","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/pages\/6761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/comments?post=6761"}],"version-history":[{"count":0,"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/pages\/6761\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/pages\/6758"}],"wp:attachment":[{"href":"https:\/\/saturna.fr\/maitronaute\/wp-json\/wp\/v2\/media?parent=6761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}