{"id":10583,"date":"2019-04-11T16:26:56","date_gmt":"2019-04-11T16:26:56","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=10583"},"modified":"2019-04-26T05:12:46","modified_gmt":"2019-04-26T05:12:46","slug":"comment-reperer-ce-soir-m-87-la-galaxie-au-celebre-trou-noir","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/04\/11\/comment-reperer-ce-soir-m-87-la-galaxie-au-celebre-trou-noir\/","title":{"rendered":"Comment rep\u00e9rer ce soir M 87, la galaxie au c\u00e9l\u00e8bre trou noir"},"content":{"rendered":"<p><strong>Vous avez envie de localiser la galaxie M 87, devenue une vedette depuis le 10 avril avec la publication de la premi\u00e8re image de son trou noir ? Suivez le guide.\u00a0<\/strong><\/p>\n<h5>Une galaxie d\u00e9sormais incontournable :<\/h5>\n<p>M 87 est depuis hier la vedette des m\u00e9dias. Vous en connaissez la raison : elle nous a offert la <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/univers-premiere-image-trou-noir-supermassif-commentaires-aurelien-barrau-51210\/\" target=\"_blank\" rel=\"noopener noreferrer\">premi\u00e8re image d&#8217;un trou noir<\/a>. Cette galaxie se situe dans la constellation de la Vierge, \u00e0 environ 60 millions d&#8217;ann\u00e9es-lumi\u00e8re de nous. Elle a \u00e9t\u00e9 d\u00e9couverte en 1781 par <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/astronomie-astronomie-catalogue-messier-250-ans-16597\/\" target=\"_blank\" rel=\"noopener noreferrer\">Charles Messier<\/a>. Cet astronome fran\u00e7ais, qui cherchait la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/21\/en-video-giotto-survolait-la-comete-de-halley-il-y-a-30-ans\/\" target=\"_blank\" rel=\"noopener noreferrer\">com\u00e8te de Halley<\/a>, l&#8217;avait confondue avec une n\u00e9buleuse. Il d\u00e9cida alors d&#8217;\u00e9viter ce genre d&#8217;erreur en r\u00e9alisant un catalogue des objets n\u00e9buleux. Messier 87 fait partie des 110 objets c\u00e9lestes r\u00e9pertori\u00e9s. D&#8217;autres objets Messier sont bien connus comme M 31 (la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/09\/le-telescope-hubble-zoome-sur-la-galaxie-d-andromede\/\" target=\"_blank\" rel=\"noopener noreferrer\">galaxie d&#8217;Androm\u00e8de<\/a>) ou M 45 <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/01\/08\/lamas-des-pleiades-au-dessus-de-letang\/\" target=\"_blank\" rel=\"noopener noreferrer\">l&#8217;amas des Pl\u00e9iades<\/a>.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/9DILtg_9dcU\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p><em>Spectaculaire zoom sur le trou noir situ\u00e9 dans la galaxie M 87. \u00a9 ESO<\/em><\/p>\n<p>M 87 est une galaxie elliptique dont le diam\u00e8tre apparent est \u00e9gal au quart de celui de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/10\/25\/pleine-lune-doctobre-dans-une-lampe-tempete\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pleine Lune<\/a>. Avec sa <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener noreferrer\">magnitude<\/a> de 8,6 on l&#8217;observe comme une petite tache floue (loin de toute <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/09\/27\/tucson-la-ville-qui-fait-baisser-la-pollution-lumineuse\/\" target=\"_blank\" rel=\"noopener noreferrer\">pollution lumineuse<\/a>) dans une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/12\/10\/longue-vue-bon-choix-debuter-astronomie\/\" target=\"_blank\" rel=\"noopener noreferrer\">longue-vue<\/a> de 100 millim\u00e8tres de diam\u00e8tre.<\/p>\n<p><!--more--><\/p>\n<h5>Entre Vierge et Lion :<\/h5>\n<p>Messier 87 \u00e9tait d\u00e9j\u00e0 bien connue des astronomes pour trois raisons. D&#8217;une part on y observe un jet de mati\u00e8re gazeuse qui s&#8217;\u00e9chappe de son noyau. D&#8217;autre part elle est entour\u00e9e de plusieurs milliers d&#8217;<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/05\/zoom-sur-messier-5-lun-des-plus-vieux-amas-globulaires\/\" target=\"_blank\" rel=\"noopener noreferrer\">amas globulaires. <\/a>Notre propre galaxie, la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/08\/26\/en-video-quest-ce-que-la-voie-lactee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Voie lact\u00e9e<\/a>, en compte moins de 200 ! Enfin elle abrite une puissante radio source (Virgo A) d\u00e9couverte en 1954.<\/p>\n<figure id=\"attachment_10587\" aria-describedby=\"caption-attachment-10587\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal2.jpg\" rel=\"lightbox[10583]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-10587\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal2-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal2-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal2-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal2-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal2.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-10587\" class=\"wp-caption-text\">Messier 87, c\u00e9l\u00e8bre galaxie elliptique g\u00e9ante dans la constellation de la Vierge. \u00a9 ESO<\/figcaption><\/figure>\n<p>Vous avez envie de rep\u00e9rer la r\u00e9gion du ciel qui abrite cette \u00e9tonnante galaxie ? Il vous suffit d&#8217;utiliser une carte du ciel interactive comme celle que propose le site <a href=\"https:\/\/www.stelvision.com\/carte-ciel\/\" target=\"_blank\" rel=\"noopener noreferrer\">Stelvision<\/a>. Regardez\u00a0 le r\u00e9sultat ci-dessous pour ce soir vers 22 heures. \u00c0 l&#8217;ouest le gros croissant de Lune glisse entre les <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/06\/07\/messier-35-ngc-2158-deux-joyaux-gemeaux\/\" target=\"_blank\" rel=\"noopener noreferrer\">G\u00e9meaux<\/a> et <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/03\/16\/quand-orion-se-dessine-dessus-de-mediterranee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Orion<\/a>.<\/p>\n<figure id=\"attachment_10586\" aria-describedby=\"caption-attachment-10586\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal3.jpg\" rel=\"lightbox[10583]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-10586\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal3-450x315.jpg\" alt=\"\" width=\"450\" height=\"315\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal3-450x315.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal3-768x538.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal3.jpg 848w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-10586\" class=\"wp-caption-text\">Le ciel ce soir vers 22 heures quand on regarde en direction du sud. \u00a9 Stelvision<\/figcaption><\/figure>\n<p>De l&#8217;autre c\u00f4t\u00e9 de la vo\u00fbte c\u00e9leste vous verrez se lever la constellation de la Vierge marqu\u00e9e par la brillante <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/11\/18\/venus-aux-cotes-de-letoile-spica-de-la-vierge\/\" target=\"_blank\" rel=\"noopener noreferrer\">Spica<\/a>. M 87 se situe \u00e0 mi-chemin entre les \u00e9toiles <em>Vindemiatrix<\/em> (Vierge) et <em>Denebola<\/em> (<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/15\/jolie-constellation-lion-accueille-jupiter\/\" target=\"_blank\" rel=\"noopener noreferrer\">constellation du Lion<\/a>). Vous pourrez tenter cette observation tout au long du printemps en \u00e9vitant les p\u00e9riodes o\u00f9 la Lune est trop lumineuse.<\/p>\n<figure id=\"attachment_10588\" aria-describedby=\"caption-attachment-10588\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal4.jpg\" rel=\"lightbox[10583]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-10588\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal4-450x391.jpg\" alt=\"\" width=\"450\" height=\"391\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal4-450x391.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal4-768x668.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/04\/tngal4.jpg 974w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-10588\" class=\"wp-caption-text\">Position de M 87 entre Vindemiatrix et Denebola. \u00a9 Sky &amp;Telescope<\/figcaption><\/figure>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Vous avez envie de localiser la galaxie M 87, devenue une vedette depuis le 10 avril avec la publication de la premi\u00e8re image de son trou noir ? Suivez le guide.\u00a0 Une galaxie d\u00e9sormais incontournable : M 87 est depuis hier la vedette des m\u00e9dias. Vous en connaissez la raison : elle nous a offert &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/04\/11\/comment-reperer-ce-soir-m-87-la-galaxie-au-celebre-trou-noir\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Comment rep\u00e9rer ce soir M 87, la galaxie au c\u00e9l\u00e8bre trou noir<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":10586,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[113,2660,398],"class_list":["post-10583","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-constellation-de-la-vierge","tag-messier-87","tag-trou-noir"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Comment rep\u00e9rer ce soir M 87, la galaxie au c\u00e9l\u00e8bre trou noir<\/title>\n<meta name=\"description\" content=\"Vous avez envie de localiser la galaxie M 87, devenue une vedette le 10 avril avec la publication de la premi\u00e8re image de son trou noir ? 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