{"id":521,"date":"2014-05-28T07:16:42","date_gmt":"2014-05-28T07:16:42","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=521"},"modified":"2014-06-17T19:09:16","modified_gmt":"2014-06-17T19:09:16","slug":"milliards-detoiles","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/05\/28\/milliards-detoiles\/","title":{"rendered":"Des milliards d’\u00e9toiles"},"content":{"rendered":"

Pour les d\u00e9couvrir, il faut vous \u00e9loigner des villes et de leur pollution lumineuse et profiter d’une nuit sans Lune<\/a> comme en ce moment.\u00a0Elles, ce sont les milliards d’\u00e9toiles<\/a> qui composent la Voie lact\u00e9e, cette bande blanche qui traverse le ciel du nord au sud.<\/p>\n

\"vl1\"<\/a><\/p>\n

Son nom nous vient de la mythologie grecque : lorsque H\u00e9ra arracha H\u00e9racl\u00e8s de son sein, une gicl\u00e9e de lait se r\u00e9pandit dans le ciel. \u00a0Mais qu’est-ce que la Voie lact\u00e9e ?<\/p>\n

La Terre est situ\u00e9e dans l’un des bras de notre galaxie, un disque (avec un bulbe central) qui compte plus de 200 milliards d’\u00e9toiles. Quand nous regardons vers le centre de \u00a0cette galaxie spirale, nous voyons ce disque d’\u00e9toiles “par la tranche” sous la forme d’une bande blanch\u00e2tre, la Voie lact\u00e9e.<\/p>\n

Les irr\u00e9gularit\u00e9s de la Voie lact\u00e9e sont produites par des nuages de poussi\u00e8re interstellaire qui nous cachent les \u00e9toiles dans certaines directions.<\/p>\n

Cette image a \u00e9t\u00e9 r\u00e9alis\u00e9e avec un objectif de 27 mm de focale ouvert \u00e0 3,5 et une pose de 30 sec \u00e0 1600 iso.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Pour les d\u00e9couvrir, il faut vous \u00e9loigner des villes et de leur pollution lumineuse et profiter d’une nuit sans Lune comme en ce moment.\u00a0Elles, ce sont les milliards d’\u00e9toiles qui composent la Voie lact\u00e9e, cette bande blanche qui traverse le ciel du nord au sud. Son nom nous vient de la mythologie grecque : lorsque … Continuer la lecture de Des milliards d’\u00e9toiles<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":523,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[89,112,168,169,170,167,166],"class_list":["post-521","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-etoile","tag-galaxie","tag-hera","tag-heracles","tag-mythologie","tag-pollution-lumineuse","tag-voie-lactee"],"yoast_head":"\nDes milliards d'\u00e9toiles<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/05\/28\/milliards-detoiles\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des milliards d'\u00e9toiles\" \/>\n<meta property=\"og:description\" content=\"Pour les d\u00e9couvrir, il faut vous \u00e9loigner des villes et de leur pollution lumineuse et profiter d’une nuit sans Lune comme en ce moment.\u00a0Elles, ce sont les milliards d’\u00e9toiles qui composent la Voie lact\u00e9e, cette bande blanche qui traverse le ciel du nord au sud. 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