{"id":2000,"date":"2015-02-25T09:08:16","date_gmt":"2015-02-25T09:08:16","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=2000"},"modified":"2015-03-04T06:15:29","modified_gmt":"2015-03-04T06:15:29","slug":"la-lune-sous-les-hyades-et-les-pleiades","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/25\/la-lune-sous-les-hyades-et-les-pleiades\/","title":{"rendered":"La Lune sous les Hyades et les Pl\u00e9iades"},"content":{"rendered":"

Hier soir, veille du Premier Quartier<\/a>, notre satellite naturel naviguait non loin des amas d’\u00e9toiles des Pl\u00e9iades <\/a>et des Hyades, espac\u00e9s d’une dizaine de degr\u00e9s et situ\u00e9s tous deux dans la constellation du Taureau.<\/p>\n

\"lune-hyades2\"<\/a><\/p>\n

Je vous ai d\u00e9j\u00e0 plusieurs fois parl\u00e9 de l’amas des Pl\u00e9iades (Messier 45) sur ce blog, notamment quand la com\u00e8te C\/2014 Q2 Lovejoy<\/a> est pass\u00e9e \u00e0 proximit\u00e9.<\/p>\n

L’amas des Hyades, m\u00eame s’il compte environ dix fois moins d’\u00e9toiles que M 45, est tr\u00e8s int\u00e9ressant \u00e0 observer \u00e9galement car c’est l’amas ouvert le plus proche du Syst\u00e8me solaire (150 ann\u00e9es-lumi\u00e8re).<\/p>\n

Les astrophysiciens ont remarqu\u00e9 que les \u00e9toiles des Hyades et de l’amas de la Cr\u00e8che, M 44<\/a>, ont des caract\u00e9ristiques communes, preuve qu’elles sont n\u00e9es dans la m\u00eame r\u00e9gion de notre Galaxie<\/a>. Curieusement, l’\u00e9toile la plus brillantes des Hyades, Ald\u00e9baran (qui repr\u00e9sente l’\u0153il du Taureau), est deux fois plus proche de nous et ne fait donc pas partie de l’amas.<\/p>\n

Notez enfin que l’amas des Hyades n’a pas \u00e9t\u00e9 inclus dans son c\u00e9l\u00e8bre catalogue <\/a>par l’astronome Charles Messier : il n’y a donc pas de “M” pour d\u00e9signer cet amas, qui est cependant enregistr\u00e9 dans deux autres catalogues sous les noms de Melotte <\/a>25 ou Collinder<\/a> 50.<\/p>\n

Ce soir la Lune traversera l’amas des Hyades (occultant au passage plusieurs \u00e9toiles) et fr\u00f4lera Ald\u00e9baran.<\/p>\n","protected":false},"excerpt":{"rendered":"

Hier soir, veille du Premier Quartier, notre satellite naturel naviguait non loin des amas d’\u00e9toiles des Pl\u00e9iades et des Hyades, espac\u00e9s d’une dizaine de degr\u00e9s et situ\u00e9s tous deux dans la constellation du Taureau. Je vous ai d\u00e9j\u00e0 plusieurs fois parl\u00e9 de l’amas des Pl\u00e9iades (Messier 45) sur ce blog, notamment quand la com\u00e8te C\/2014 … Continuer la lecture de La Lune sous les Hyades et les Pl\u00e9iades<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":2001,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[83],"tags":[373,434,863,713,133,867,89,82,865,864,866],"class_list":["post-2000","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-lune","tag-aldebaran","tag-amas-de-la-creche","tag-amas-des-hyades","tag-amas-des-pleiades","tag-charles-messier","tag-collinder-50","tag-etoile","tag-lune","tag-m-44","tag-m-45","tag-melotte-25"],"yoast_head":"\nLa Lune sous les Hyades et les Pl\u00e9iades<\/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\/2015\/02\/25\/la-lune-sous-les-hyades-et-les-pleiades\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La Lune sous les Hyades et les Pl\u00e9iades\" \/>\n<meta property=\"og:description\" content=\"Hier soir, veille du Premier Quartier, notre satellite naturel naviguait non loin des amas d’\u00e9toiles des Pl\u00e9iades et des Hyades, espac\u00e9s d’une dizaine de degr\u00e9s et situ\u00e9s tous deux dans la constellation du Taureau. 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