{"id":10304,"date":"2016-07-05T13:51:32","date_gmt":"2016-07-05T17:51:32","guid":{"rendered":"https:\/\/aptgadget.com\/?p=10304"},"modified":"2016-09-19T17:33:38","modified_gmt":"2016-09-19T21:33:38","slug":"nasas-juno-spacecraft-enters-jupiters-orbit","status":"publish","type":"post","link":"https:\/\/aptgadget.com\/fr\/nasas-juno-spacecraft-enters-jupiters-orbit\/","title":{"rendered":"La sonde Juno de la NASA entre en orbite autour de Jupiter"},"content":{"rendered":"<p>Lundi a \u00e9t\u00e9 un grand jour pour la NASA, puisque son vaisseau spatial Juno est entr\u00e9 dans l'orbite de Jupiter. Bienvenue sur Jupiter, tel \u00e9tait le message commun des scientifiques, des techniciens et des ing\u00e9nieurs qui ont applaudi au Jet Propulsion Laboratory de la NASA \u00e0 Pasadena, en Californie. La sonde solaire voyage depuis cinq ans, une mission qui a co\u00fbt\u00e9 890 millions de livres sterling. Juno devient le deuxi\u00e8me engin spatial \u00e0 orbiter autour de Jupiter, apr\u00e8s Galileo, qui s'est d\u00e9lib\u00e9r\u00e9ment \u00e9cras\u00e9 sur Jupiter le 21 septembre 2003, dans le but de prot\u00e9ger l'une de ses d\u00e9couvertes - un \u00e9ventuel oc\u00e9an sous la lune de Jupiter, Europe.<\/p>\n<p>Le responsable scientifique de la mission, Scott Bolton, a f\u00e9licit\u00e9 son \u00e9quipe, soulignant qu'elle avait accompli la t\u00e2che la plus difficile jamais r\u00e9alis\u00e9e par la NASA. Les derni\u00e8res minutes avant que Juno ne s'aligne sur l'orbite de Jupiter ont \u00e9t\u00e9 d\u00e9licates, car la sonde devait allumer son moteur-fus\u00e9e principal afin de ralentir suffisamment pour \u00eatre captur\u00e9e dans l'orbite de Jupiter. Juno a d\u00fb effectuer une man\u0153uvre d'insertion en orbite \u00e0 suspense dans le but de se rapprocher de Jupiter. La combustion de son moteur principal, qui a dur\u00e9 pr\u00e8s de 35 minutes, lui a permis de ralentir sa vitesse d'environ 542 m\/s afin de se placer en orbite autour de Jupiter.<\/p>\n<p>L'arriv\u00e9e en toute s\u00e9curit\u00e9 de Juno est une nouvelle \u00e9tape importante pour la NASA, qui a pass\u00e9 l'ann\u00e9e derni\u00e8re \u00e0 c\u00e9l\u00e9brer son lot de r\u00e9ussites dans le domaine des sciences spatiales. Il y a environ un an, la sonde spatiale New Horizon de la NASA a effectu\u00e9 une mission d'observation dans l'espace. <a href=\"http:\/\/www.cnet.com\/au\/news\/nasas-new-horizons-just-minutes-from-pluto-flyby\/\">Vol de Pluton<\/a>Il s'agit d'un projet de recherche sur la petite plan\u00e8te \u00e0 une vitesse de 30 000 mph, qui renvoie des donn\u00e9es et des images brillantes.<\/p>\n<p>Juno va maintenant passer les 20 prochains mois \u00e0 explorer ce qui se trouve sous les \u00e9pais nuages de Jupiter. Elle mesurera la teneur en eau, le champ magn\u00e9tique de la plan\u00e8te et les signes d'un noyau solide. La sonde recherchera \u00e9galement de l'eau dans l'\u00e9paisse atmosph\u00e8re de Jupiter, un indicateur essentiel pour d\u00e9terminer \u00e0 quelle distance du soleil la plan\u00e8te s'est form\u00e9e. Elle fournira \u00e9galement aux scientifiques davantage d'informations sur la c\u00e9l\u00e8bre Grande Tache rouge de la plan\u00e8te, qui est une grosse temp\u00eate active depuis des centaines d'ann\u00e9es. Sarah Cruddas, journaliste sp\u00e9cialis\u00e9e dans l'espace, reconna\u00eet que l'on ne sait toujours pas grand-chose de Jupiter et de sa composition. Elle note qu'il s'agit presque d'un mini syst\u00e8me solaire avec de nombreuses lunes, dont trois sont plus grandes que notre lune et une plus grande que la plan\u00e8te Mercure.<\/p>\n<p>L'arriv\u00e9e en toute s\u00e9curit\u00e9 de Juno sur l'orbite est une r\u00e9ussite incontestable, m\u00eame si elle doit encore relever d'\u00e9normes d\u00e9fis, car Jupiter est entour\u00e9e d'un rayonnement \u00e9lev\u00e9 et d'un champ magn\u00e9tique puissant. Elle poss\u00e8de \u00e9galement un anneau de poussi\u00e8re et de roches similaire \u00e0 celui de Saturne.<\/p>\n<p>Image principale Cr\u00e9dit : cnet<\/p>\n<p><a href=\"https:\/\/www.nasa.gov\/press-release\/nasas-juno-spacecraft-in-orbit-around-mighty-jupiter\">Source<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Monday marked a great day for NASA, as their spacecraft- Juno entered Jupiter\u2019s orbit. Welcome to Jupiter was a common message from scientists, technicians and engineers as they cheered at NASA\u2019s Jet Propulsion Laboratory in Pasadena, California. The solar-powered probe has been travelling for five years, a mission that has used \u00a3890m. Juno becomes the [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":10306,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-10304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NASA\u2019s Juno spacecraft enters Jupiter\u2019s orbit - AptGadget.com<\/title>\n<meta name=\"description\" content=\"NASA has successfully managed to align Juno to orbit around Jupiter&#039;s. 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