{"id":3232,"date":"2015-07-22T05:07:17","date_gmt":"2015-07-22T05:07:17","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3232"},"modified":"2015-07-28T06:08:49","modified_gmt":"2015-07-28T06:08:49","slug":"apres-pluton-new-horizons-devoile-nix-et-hydre","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/22\/apres-pluton-new-horizons-devoile-nix-et-hydre\/","title":{"rendered":"Apr\u00e8s Pluton, New Horizons d\u00e9voile Nix et Hydre"},"content":{"rendered":"

La sonde New Horizons a transmis des images des satellites Nix et Hydre obtenues lors de son survol de la plan\u00e8te naine Pluton le 14 juillet dernier.<\/strong><\/p>\n

Apr\u00e8s l’hallucinant survol des glaces de Pluton par New Horizons<\/a>, La sonde am\u00e9ricaine nous propose de d\u00e9couvrir Nix et Hydre, 2 des 5 satellites (Charon, Hydre, Nix, Styx et Kerb\u00e9ros) de la plan\u00e8te naine.\u00a0Nix et Hydre ont \u00e9t\u00e9 d\u00e9couverts par le t\u00e9lescope spatial Hubble<\/a> en 2005.<\/p>\n

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

Nix est une lune gel\u00e9e en forme de haricot d’environ 42 kilom\u00e8tres de long et 36 kilom\u00e8tres de large.<\/p>\n

New Horizons<\/a> en a tir\u00e9 le portrait en fausses couleurs depuis une distance de 165 000 km : on y d\u00e9couvre \u00a0une r\u00e9gion rouge\u00e2tre que les scientifiques soup\u00e7onnent d’\u00eatre un crat\u00e8re. Pour \u00a0Carly Howett du Southwest Research Institute<\/a>,\u00a0<\/em>une telle\u00a0observation est si all\u00e9chante qu’il est difficile de patienter en attendant de nouvelles donn\u00e9es au sujet de ce satellite.<\/p>\n

Hydre mesure environ 55 kilom\u00e8tres de long et 40 kilom\u00e8tres de large. New Horizons<\/a> a photographi\u00e9 ce satellite en noir et blanc depuis une distance d’environ 231 000 kilom\u00e8tres, r\u00e9v\u00e9lant la pr\u00e9sence d’au moins deux tr\u00e8s grands crat\u00e8res ainsi que des zones plus ou moins grises qui pourraient \u00eatre la signature de diff\u00e9rents mat\u00e9riaux.<\/p>\n

Les scientifiques de la NASA <\/a>ont promis des images “spectaculaires” dans les jours qui viennent…<\/p>\n

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

La sonde New Horizons a transmis des images des satellites Nix et Hydre obtenues lors de son survol de la plan\u00e8te naine Pluton le 14 juillet dernier. Apr\u00e8s l’hallucinant survol des glaces de Pluton par New Horizons, La sonde am\u00e9ricaine nous propose de d\u00e9couvrir Nix et Hydre, 2 des 5 satellites (Charon, Hydre, Nix, Styx … Continuer la lecture de Apr\u00e8s Pluton, New Horizons d\u00e9voile Nix et Hydre<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":3233,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[1157,486,1156,1158,625,734],"class_list":["post-3232","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-hydre","tag-nasa","tag-new-horizons","tag-nix","tag-pluton","tag-telescope-hubble"],"yoast_head":"\nApr\u00e8s Pluton, New Horizons d\u00e9voile Nix et Hydre<\/title>\n<meta name=\"description\" content=\"La sonde New Horizons a transmis des images des satellites Nix et Hydre obtenues lors de son 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