{"id":7613,"date":"2018-07-29T18:45:24","date_gmt":"2018-07-29T16:45:24","guid":{"rendered":"http:\/\/gap47.astrosurf.com\/?page_id=7613"},"modified":"2018-07-29T19:29:38","modified_gmt":"2018-07-29T17:29:38","slug":"voyage-au-centre-de-la-voie-lactee","status":"publish","type":"page","link":"https:\/\/gap47.astrosurf.com\/index.php\/voyage-au-centre-de-la-voie-lactee\/","title":{"rendered":"Voyage au centre de la Voie Lact\u00e9e"},"content":{"rendered":"<p><span style=\"font-family: times new roman, times, serif; font-size: 20px;\">Quelles merveilles se situent au centre de notre Galaxie&nbsp;? Dans le \u00ab&nbsp;Voyage au centre de la Terre&nbsp;\u00bb de Jules Verne, le professeur Liedenbrock et ses amis explorateurs rencontrent beaucoup de merveilles \u00e9tranges et excitantes. Les astronomes connaissent d\u00e9j\u00e0 certains des objets bizarres qui existent autour de notre centre galactique, dont de vastes nuages cosmiques de poussi\u00e8res, des amas d\u2019\u00e9toiles brillantes, des anneaux de gaz tourbillonnants et m\u00eame un trou noir supermassif. La plus grande partie du centre galactique nous est cach\u00e9 (en lumi\u00e8re visible) par des poussi\u00e8res et des gaz, mais il peut \u00eatre explor\u00e9 en utilisant d\u2019autres longueurs d\u2019onde des radiations \u00e9lectromagn\u00e9tiques. La vid\u00e9o ci-dessous est, de fait, un zoom num\u00e9rique dans le centre de la Voie Lact\u00e9e qui commence en utilisant la lumi\u00e8re visible. Au fur et \u00e0 mesure qu\u2019on avance la lumi\u00e8re utilis\u00e9e passe \u00e0 l\u2019infrarouge qui p\u00e9n\u00e8tre les poussi\u00e8res et souligne les nuages de gaz qui ont \u00e9t\u00e9 d\u00e9couverts r\u00e9cemment, en 2013, comme tombant vers le trou noir central. En mai 2018, les observations d\u2019une \u00e9toile passant pr\u00e8s du trou noir supermassif (Sagittarius A*) au centre de la Voie Lact\u00e9e, ont montr\u00e9 pour la premi\u00e8re fois un d\u00e9calage gravitationnel vers le rouge de la lumi\u00e8re de l\u2019\u00e9toile, comme pr\u00e9dit par la Relativit\u00e9 G\u00e9n\u00e9rale d\u2019Einstein. (<a href=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2018\/07\/eso1825fr.pdf\" target=\"_blank\" rel=\"noopener\">voir notre document sur cette d\u00e9couverte<\/a>).<br \/>\n<\/span><\/p>\n<p><span style=\"font-family: times new roman, times, serif; font-size: 14px;\">Source : APOD 2018 07 29 &#8211; Cr\u00e9dits vid\u00e9o : <b><\/b><span style=\"text-decoration: underline;\"> <a href=\"http:\/\/www.eso.org\/public\/\">ESO<\/a><\/span>\/MPE\/Nick Risinger (<a href=\"http:\/\/skysurvey.org\/\">skysurvey.org<\/a>)\/<a href=\"http:\/\/www.eso.org\/public\/teles-instr\/surveytelescopes\/vista.html\">VISTA<\/a>\/J. Emerson\/<\/span><a href=\"http:\/\/archive.eso.org\/dss\/dss\"><span style=\"font-family: times new roman, times, serif; font-size: 14px;\">Digitized Sky Survey 2<\/span><\/a><\/p>\n<p style=\"text-align: right;\"><span style=\"font-family: times new roman, times, serif; font-size: 14px;\">Traduction : Olivier Sabbagh<\/span><a href=\"https:\/\/www.youtube.com\/watch?v=FNHexFdacK0\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7616 size-full\" src=\"http:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2018\/07\/Capture-d\u2019e\u0301cran-2018-07-29-a\u0300-16.24.09.png\" alt=\"\" width=\"1706\" height=\"868\" srcset=\"https:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2018\/07\/Capture-d\u2019e\u0301cran-2018-07-29-a\u0300-16.24.09.png 1706w, https:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2018\/07\/Capture-d\u2019e\u0301cran-2018-07-29-a\u0300-16.24.09-300x153.png 300w, https:\/\/gap47.astrosurf.com\/wp-content\/uploads\/2018\/07\/Capture-d\u2019e\u0301cran-2018-07-29-a\u0300-16.24.09-768x391.png 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/a><em><span style=\"font-family: times new roman, times, serif;\">&nbsp;\u2191&nbsp; Cliquez sur l&rsquo;image pour acc\u00e9der \u00e0 la vid\u00e9o<\/span><\/em><\/p>\n<hr>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quelles merveilles se situent au centre de notre Galaxie&nbsp;? Dans le \u00ab&nbsp;Voyage au centre de la Terre&nbsp;\u00bb de Jules Verne, le professeur Liedenbrock et ses amis explorateurs rencontrent beaucoup de merveilles \u00e9tranges et excitantes. Les astronomes connaissent d\u00e9j\u00e0 certains des objets bizarres qui existent autour de notre centre galactique, dont de vastes nuages cosmiques de &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/gap47.astrosurf.com\/index.php\/voyage-au-centre-de-la-voie-lactee\/\" class=\"more-link\">Continuer la lecture<span class=\"screen-reader-text\"> de &laquo;&nbsp;Voyage au centre de la Voie Lact\u00e9e&nbsp;&raquo;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-7613","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/pages\/7613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/comments?post=7613"}],"version-history":[{"count":7,"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/pages\/7613\/revisions"}],"predecessor-version":[{"id":7622,"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/pages\/7613\/revisions\/7622"}],"wp:attachment":[{"href":"https:\/\/gap47.astrosurf.com\/index.php\/wp-json\/wp\/v2\/media?parent=7613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}