{"id":1339,"date":"2014-12-09T06:52:30","date_gmt":"2014-12-09T06:52:30","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=1339"},"modified":"2014-12-13T09:58:33","modified_gmt":"2014-12-13T09:58:33","slug":"reveille-la-sonde-new-horizons","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/09\/reveille-la-sonde-new-horizons\/","title":{"rendered":"On a r\u00e9veill\u00e9 la sonde New Horizons"},"content":{"rendered":"

Souvenez-vous : en ao\u00fbt 2006, au cours d’une r\u00e9union \u00e0 Prague<\/a>, l’Union Astronomique Internationale (IAU<\/a>) d\u00e9cidait de reclasser Pluton dans le groupe des plan\u00e8tes naines (un stade interm\u00e9diaire entre plan\u00e8te et petit corps), qui compte \u00e0 ce jour\u00a0cinq membres : C\u00e9r\u00e8s, Pluton, Haum\u00e9a, Mak\u00e9mak\u00e9 et \u00c9ris.<\/p>\n

Cette d\u00e9cision n’avait sans doute pas beaucoup \u00e9mu la sonde am\u00e9ricaine New Horizons<\/a> partie quelques mois plus t\u00f4t (en janvier 2006) pour un long voyage qui va l’amener \u00e0 survoler Pluton (et son tr\u00e8s gros satellite Charon) pendant l’\u00e9t\u00e9 2015.<\/p>\n

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

Apr\u00e8s 1873 jours d’hibernation (la sonde \u00e9tant mise hors tension pour m\u00e9nager ses composants), elle vient d’\u00eatre r\u00e9veill\u00e9e. Elle se trouve actuellement \u00e0 plus de \u00a04,6 milliards de kilom\u00e8tres de la Terre et il lui reste 257 millions de kilom\u00e8tres \u00e0 parcourir avant de survoler Pluton le 14 juillet 2015 \u00e0 une distance de 10.000 kilom\u00e8tres et \u00e0 une vitesse de 11 km\/sec.<\/p>\n

Apr\u00e8s son survol de Pluton, la sonde poursuivra son voyage en direction d’un groupe de plan\u00e9t\u00e9simaux qui orbitent \u00e0 1,5 milliard de kilom\u00e8tres de Pluton dans une zone appel\u00e9e la ceinture de Kuiper. La NASA <\/a>annoncera en 2016 les cibles choisies pour cette exploration.<\/p>\n","protected":false},"excerpt":{"rendered":"

Souvenez-vous : en ao\u00fbt 2006, au cours d’une r\u00e9union \u00e0 Prague, l’Union Astronomique Internationale (IAU) d\u00e9cidait de reclasser Pluton dans le groupe des plan\u00e8tes naines (un stade interm\u00e9diaire entre plan\u00e8te et petit corps), qui compte \u00e0 ce jour\u00a0cinq membres : C\u00e9r\u00e8s, Pluton, Haum\u00e9a, Mak\u00e9mak\u00e9 et \u00c9ris. Cette d\u00e9cision n’avait sans doute pas beaucoup \u00e9mu la … Continuer la lecture de On a r\u00e9veill\u00e9 la sonde New Horizons<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":1340,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[631,626,629,486,114,627,630,625,290,568,628,175,481],"class_list":["post-1339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-ceinture-de-kuiper","tag-charon","tag-hibernation","tag-nasa","tag-planete","tag-planete-naine","tag-planetesimal","tag-pluton","tag-prague","tag-satellite","tag-sonde-new-horizons","tag-terre","tag-union-astronomique-internationale"],"yoast_head":"\nsonde new horizons<\/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\/12\/09\/reveille-la-sonde-new-horizons\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"sonde new horizons\" \/>\n<meta property=\"og:description\" content=\"Souvenez-vous : en ao\u00fbt 2006, au cours d’une r\u00e9union \u00e0 Prague, l’Union Astronomique Internationale (IAU) d\u00e9cidait de reclasser Pluton dans le groupe des plan\u00e8tes naines (un stade interm\u00e9diaire entre plan\u00e8te et petit corps), qui compte \u00e0 ce jour\u00a0cinq membres : C\u00e9r\u00e8s, Pluton, Haum\u00e9a, Mak\u00e9mak\u00e9 et \u00c9ris. 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