{"id":9907,"date":"2015-12-10T20:00:20","date_gmt":"2015-12-10T19:00:20","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=9907"},"modified":"2015-12-10T20:00:20","modified_gmt":"2015-12-10T19:00:20","slug":"la-sonde-japonaise-akatsuki-en-orbite-autour-de-venus","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/la-sonde-japonaise-akatsuki-en-orbite-autour-de-venus\/","title":{"rendered":"La sonde Japonaise Akatsuki en orbite autour de V\u00e9nus"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p style=\"text-align: justify;\">Si les missions spatiales se d\u00e9roulent g\u00e9n\u00e9ralement relativement bien, il arrive que des incidents viennent enrayer la m\u00e9canique bien huil\u00e9e des sondes. L&rsquo;agence spatiale japonaise en a fait les frais avec sa sonde Akatsuki qui vient seulement d&rsquo;arriver \u00e0 destination&#8230; avec cinq ans de retard.<\/p>\n<p style=\"text-align: justify;\">Il n&rsquo;y a pas que l&rsquo;Europe, les \u00c9tats-Unis et la Russie qui s&rsquo;att\u00e8lent \u00e0 la d\u00e9couverte de notre syst\u00e8me solaire, le Japon est \u00e9galement de la partie. Le pays du Soleil levant avait ainsi lanc\u00e9 une sonde baptis\u00e9e Akatsuki (aussi appel\u00e9e Venus Climat Orbiter, VCO) en mai 2010 avec pour mission d&rsquo;\u00e9tudier Venus. Pour rappel, il s&rsquo;agit de la deuxi\u00e8me plan\u00e8te de notre syst\u00e8me solaire, plac\u00e9e entre Mercure et la Terre.<\/p>\n<p style=\"text-align: justify;\">Elle devait alors entrer en orbite autour de Venus en d\u00e9cembre de la m\u00eame ann\u00e9e, mais \u00e0 cause d&rsquo;un probl\u00e8me de propulsion, la man\u0153uvre a \u00e9chou\u00e9. Depuis, la sonde \u00e9tait en orbite autour de notre Soleil, en attendant des jours meilleurs. En effet, tout n&rsquo;\u00e9tait pas forc\u00e9ment perdu et l&rsquo;agence japonaise avait bon espoir de placer Akatsuki en orbite en ce mois de d\u00e9cembre.<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p style=\"text-align: justify;\">Et justement, la JAXA (Agence d&rsquo;exploration spatiale japonaise) vient d&rsquo;annoncer officiellement que cette op\u00e9ration de la derni\u00e8re chance \u00e9tait un succ\u00e8s. La sonde Venus Climat Orbiter est en orbite autour de Venus, avec une inclinaison de 3\u00b0 par rapport \u00e0 l&rsquo;orbite de Venus, un p\u00e9riapse \u00e0 400 km environ et un apoapside \u00e0 pr\u00e8s de 440 000 km. Sa p\u00e9riode de r\u00e9volution est de 13 jours et 14 heures.<\/p>\n<p style=\"text-align: justify;\">La JAXA pr\u00e9cise que la sonde \u00ab est en bonne sant\u00e9 \u00bb. Trois instruments scientifiques sont d&rsquo;ores et d\u00e9j\u00e0 en service (Ultraviolet Imager, Longwave IR camera et 1\u03bcm camera), tandis que les autres seront progressivement remis en marche. La sonde devrait \u00eatre pleinement op\u00e9rationnelle en avril 2016. En attendant, quelques images ont \u00e9t\u00e9 mises en ligne :<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"9909\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/la-sonde-japonaise-akatsuki-en-orbite-autour-de-venus\/venus-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/venus.jpeg?fit=400%2C400&amp;ssl=1\" data-orig-size=\"400,400\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;1&quot;}\" data-image-title=\"venus\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/venus.jpeg?fit=400%2C400&amp;ssl=1\" class=\"alignnone size-full wp-image-9909\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/venus.jpeg?resize=400%2C400\" alt=\"venus\" width=\"400\" height=\"400\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/venus.jpeg?w=400&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/venus.jpeg?resize=300%2C300&amp;ssl=1 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>source :\u00a0<a href=\"http:\/\/www.nextinpact.com\/\" target=\"_blank\">http:\/\/www.nextinpact.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"9907\">(386)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Si les missions spatiales se d\u00e9roulent g\u00e9n\u00e9ralement relativement bien, il arrive que des incidents viennent enrayer la m\u00e9canique bien huil\u00e9e&#8230;<\/p>\n","protected":false},"author":1,"featured_media":9910,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"La sonde Japonaise #Akatsuki en orbite autour de #V\u00e9nus @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[5242,107,5244,702,5243,1629],"class_list":["post-9907","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-akatsuki","tag-japon","tag-longwave-ir","tag-sonde","tag-ultraviolet-imager","tag-venus","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/venus.jpg?fit=1024%2C768&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-2zN","jetpack-related-posts":[{"id":8522,"url":"https:\/\/www.laterredufutur.com\/accueil\/apres-mars-et-pluton-en-route-pour-venus\/","url_meta":{"origin":9907,"position":0},"title":"Apr\u00e8s Mars et Pluton, en route pour V\u00e9nus","author":"Admin","date":"3 octobre 2015","format":false,"excerpt":"La voisine de la Terre est l\u2019objectif de deux des cinq missions pressenties pour \u00eatre lanc\u00e9es par l\u2019agence spatiale am\u00e9ricaine la NASA. Objectif V\u00e9nus. La Nasa a d\u00e9voil\u00e9 mercredi soir la liste des cinq projets d\u2019exploration spatiale pressentis pour \u00eatre financ\u00e9s et concr\u00e9tis\u00e9s, dont deux concernent notre voisine. Chacun va\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":3412,"url":"https:\/\/www.laterredufutur.com\/accueil\/venus-express\/","url_meta":{"origin":9907,"position":1},"title":"Venus Express","author":"Admin","date":"13 avril 2006","format":false,"excerpt":"Ce matin du lundi 10 avril 2006, \u00e0 9h17 (heure de Paris), l'allumage du moteur principal pendant une dur\u00e9e de 50 minutes a permis de r\u00e9duire de 29 000 \u00e0 environ 25 000 km\/h la vitesse relative de la sonde par rapport \u00e0 V\u00e9nus, permettant ainsi sa capture par le\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2726,"url":"https:\/\/www.laterredufutur.com\/accueil\/venus-devoilee\/","url_meta":{"origin":9907,"position":2},"title":"V\u00e9nus d\u00e9voil\u00e9e","author":"Admin","date":"4 mars 2005","format":false,"excerpt":"Voici V\u00e9nus dans toute sa plendeur que vous pourrez\u00a0t\u00e9l\u00e9charger ci apr\u00e8s. L'atmosph\u00e8re de V\u00e9nus chauffe \u00e0 plus de 480\u00b0 et poss\u00e8de une superbe couche d'acide sulfurique. La vie est impossible et personne ne l'a jamais observ\u00e9e r\u00e9ellement. \u00a0 La plan\u00e8te V\u00e9nus, le joyau du ciel, \u00e9tait connue des anciens astronomes\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":14573,"url":"https:\/\/www.laterredufutur.com\/accueil\/venus-abriterait-elle-la-vie\/","url_meta":{"origin":9907,"position":3},"title":"V\u00e9nus abriterait-elle la vie ?","author":"Admin","date":"13 f\u00e9vrier 2017","format":false,"excerpt":"Venus est consid\u00e9r\u00e9e depuis toujours comme une des plan\u00e8tes les plus inhospitali\u00e8res par les astronomes. En raison de sa proximit\u00e9 avec l\u2019\u00e9toile de notre syst\u00e8me, la pression \u00e0 la surface est estim\u00e9e \u00e0 90 atmosph\u00e8res et la temp\u00e9rature \u00e0 sa surface atteint les 450 \u00b0C. Des conditions extr\u00eames, et peu\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/super-terre-venus.jpg?fit=1200%2C769&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":16755,"url":"https:\/\/www.laterredufutur.com\/accueil\/apres-trois-ans-et-demi-de-voyage-une-sonde-japonaise-atteint-sa-destination-pour-etudier-lorigine-de-la-vie\/","url_meta":{"origin":9907,"position":4},"title":"Apr\u00e8s trois ans et demi de voyage, une sonde japonaise atteint sa destination pour \u00e9tudier l&rsquo;origine de la vie","author":"Admin","date":"3 juillet 2018","format":false,"excerpt":"La sonde est tout pr\u00e8s d'un ast\u00e9ro\u00efde, sur lequel elle doit lancer un projectile. Elle en analysera ensuite les poussi\u00e8res, pour tenter de r\u00e9colter des informations sur la naissance du syst\u00e8me solaire. Elle a atteint sa destination apr\u00e8s un p\u00e9riple de 3,2 milliards de kilom\u00e8tres. La sonde japonaise Hayabusa2 est\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/06\/Ryugu.jpg?fit=1200%2C801&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/06\/Ryugu.jpg?fit=1200%2C801&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/06\/Ryugu.jpg?fit=1200%2C801&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/06\/Ryugu.jpg?fit=1200%2C801&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/06\/Ryugu.jpg?fit=1200%2C801&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":4962,"url":"https:\/\/www.laterredufutur.com\/accueil\/on-a-marche-sur-la-lune\/","url_meta":{"origin":9907,"position":5},"title":"On a march\u00e9 sur la Lune","author":"Admin","date":"20 juillet 2009","format":false,"excerpt":"On a march\u00e9 sur la Lune, c'\u00e9tait il y a 40 ans aujourd'hui. Houston, 20 juillet 1969. L'atmosph\u00e8re est oppressante dans la salle de contr\u00f4le de la Nasa. Le souffle court, le coeur battant, ing\u00e9nieurs et techniciens ont les yeux riv\u00e9s sur leurs ordinateurs. D'il y a 40 ans \u00e0\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/armstrong.jpg?fit=400%2C307&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=9907"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9907\/revisions"}],"predecessor-version":[{"id":9911,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9907\/revisions\/9911"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/9910"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=9907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=9907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=9907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}