{"id":6009,"date":"2016-06-27T15:57:20","date_gmt":"2016-06-27T15:57:20","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6009"},"modified":"2016-07-07T12:40:21","modified_gmt":"2016-07-07T12:40:21","slug":"vlt-scrute-jupiter-larrivee-de-sonde-juno","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/06\/27\/vlt-scrute-jupiter-larrivee-de-sonde-juno\/","title":{"rendered":"Le VLT se tourne vers Jupiter avant l’arriv\u00e9e de la sonde Juno"},"content":{"rendered":"

Le Very Large Telescope<\/em> a point\u00e9 Jupiter quelques jours avant que la sonde am\u00e9ricaine Juno ne se mette en orbite autour de la g\u00e9ante gazeuse.<\/strong><\/p>\n

Le 4 juillet, jour de la f\u00eate nationale am\u00e9ricaine, la sonde Juno<\/a> proc\u00e9dera \u00e0 sa mise en orbite autour de Jupiter <\/a>au terme d\u2019un voyage qui a commenc\u00e9 le 5 ao\u00fbt 2011. Treize ans apr\u00e8s la fin de la mission Galileo<\/a>, une nouvelle sonde va donc se satelliser autour de la plus grosse plan\u00e8te du Syst\u00e8me solaire.<\/p>\n

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

L’objectif de Juno est de nous en apprendre plus sur la circulation atmosph\u00e9rique tr\u00e8s complexe et le c\u0153ur de Jupiter (on ne sait toujours pas si cette plan\u00e8te poss\u00e8de un noyau central ou pas). En se satellisant sur une orbite polaire fortement excentrique (sa distance \u00e0 Jupiter variera de 5.000 \u00e0 2,8 millions de kilom\u00e8tres), la sonde am\u00e9ricaine devrait obtenir des mesures cent fois plus pr\u00e9cises que celles acquises \u00e0 ce jour.<\/p>\n

\"jupiter2\"<\/a><\/p>\n

Pour optimiser le programme d’observation de la sonde Juno, la NASA <\/a>a d\u00e9j\u00e0 fait appel aux astronomes amateurs qui se sont retrouv\u00e9s \u00e0 l’Observatoire de Nice les 12 et 13 mai dernier \u00e0 l’initiative de Marc Delcroix<\/a> pour coordonner leurs observations avec les professionnels (photo de droite ci-dessus).<\/p>\n

C’est au tour du Very Large Telescope<\/em><\/a> d’apporter sa contribution (photo de gauche ci-dessus) : il vient de fournir de spectaculaires images de l’atmosph\u00e8re de Jupiter r\u00e9alis\u00e9es \u00e0 l’aide du spectrom\u00e8tre infrarouge VISIR <\/a>(VLT Imager and Spectrometer for mid-Infrared<\/em>), des clich\u00e9s que l’ESO<\/a> a d\u00e9voil\u00e9s \u00e0 l’occasion du National Astronomy Meeting 2016<\/em><\/a> qui se d\u00e9roule jusqu’au premier juillet \u00e0 l’Universit\u00e9 de Nottingham<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le Very Large Telescope a point\u00e9 Jupiter quelques jours avant que la sonde am\u00e9ricaine Juno ne se mette en orbite autour de la g\u00e9ante gazeuse. Le 4 juillet, jour de la f\u00eate nationale am\u00e9ricaine, la sonde Juno proc\u00e9dera \u00e0 sa mise en orbite autour de Jupiter au terme d\u2019un voyage qui a commenc\u00e9 le 5 … Continuer la lecture de Le VLT se tourne vers Jupiter avant l’arriv\u00e9e de la sonde Juno<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":6011,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[633,90,1686,486,1731,1732,1730,637],"class_list":["post-6009","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-eso","tag-jupiter","tag-marc-delcroix","tag-nasa","tag-national-astronomy-meeting","tag-universite-de-nottingham","tag-visir","tag-vlt"],"yoast_head":"\nLe VLT se tourne vers Jupiter avant l'arriv\u00e9e de la sonde Juno<\/title>\n<meta name=\"description\" content=\"Le Very 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