{"id":22648,"date":"2022-07-28T17:21:46","date_gmt":"2022-07-28T17:21:46","guid":{"rendered":"https:\/\/www.africa-press.net\/mali\/politique\/la-planete-geante-jupiter-immortalisee-par-james-webb-2"},"modified":"2022-07-28T18:04:28","modified_gmt":"2022-07-28T18:04:28","slug":"la-planete-geante-jupiter-immortalisee-par-james-webb-2","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2","title":{"rendered":"La plan\u00e8te g\u00e9ante Jupiter immortalis\u00e9e par James-Webb"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Mali. <\/strong><\/span>Si d\u00e9couvrir les premi\u00e8res galaxies qui se sont form\u00e9es dans notre Univers est l\u2019un des principaux objectifs du t\u00e9lescope spatial James-Webb, le nouvel observatoire a d\u00e9cid\u00e9ment bien d\u2019autres talents. Pour preuve, dans la foul\u00e9e de la publication de ses toutes premi\u00e8res images scientifiques, la Nasa a \u00e9galement d\u00e9livr\u00e9 les 40 t\u00e9raoctets de donn\u00e9es (1 To = 1 million de m\u00e9gaoctets), recueillies lors des phases de test du t\u00e9lescope, afin que la communaut\u00e9 scientifique puisse s\u2019en emparer. Parmi elles figure une image embl\u00e9matique et susceptible de parler \u00e0 tous, puisqu\u2019il s\u2019agit du premier clich\u00e9 d\u2019une plan\u00e8te du syst\u00e8me solaire selon James-Webb. Une vue assez inhabituelle de la g\u00e9ante gazeuse Jupiter en infrarouge, le domaine d\u2019ondes lumineuses inaccessibles \u00e0 l\u2019\u0153il humain, que le t\u00e9lescope spatial observe.<\/p>\n<p>Jupiter et sa lune Europe, \u00e0 gauche, vues par l\u2019instrument NIRCam du t\u00e9lescope spatial James Webb. On peut y voir des d\u00e9tails extr\u00eamement fins. Notamment dans les nuages qui \u00e9voluent dans les bandes de circulation altern\u00e9e (est-ouest, ouest-est) caract\u00e9ristiques de l\u2019atmosph\u00e8re de Jupiter. On y voit aussi le gigantesque anticyclone qui constitue en quelque sorte sa \u00ab marque de fabrique \u00bb : la grande tache rouge, \u00e9tonnamment stable puisqu\u2019elle est visible dans son h\u00e9misph\u00e8re sud depuis qu\u2019il est donn\u00e9 aux hommes d\u2019observer la plan\u00e8te avec un t\u00e9lescope. Elle appara\u00eet ici tr\u00e8s lumineuse, car, sur ce clich\u00e9, les zones les plus claires sont aussi les plus chaudes. Or cet anticyclone, dont le diam\u00e8tre est plus grand que celui de la Terre, ram\u00e8ne \u00e0 la surface des gaz tr\u00e8s chauds venant de l\u2019int\u00e9rieur de la plan\u00e8te g\u00e9ante.<\/p>\n<p><b>Une image d\u2019Europe<\/b><\/p>\n<p>Quant au petit corps \u00e0 gauche de Jupiter sur l\u2019image dont l\u2019ombre est \u00e9galement visible \u00e0 gauche de la grande tache rouge, c\u2019est sans doute le plus c\u00e9l\u00e8bre de ses soixante-dix-neuf satellites naturels connus de la g\u00e9ante gazeuse. Sa lune Europe r\u00e9put\u00e9e pour ses myst\u00e9rieux geysers signalant probablement la pr\u00e9sence d\u2019un oc\u00e9an sous sa cro\u00fbte de glace. Une \u00e9tendue d\u2019eau liquide sal\u00e9e d\u2019autant plus susceptible d\u2019abriter la vie qu\u2019elle serait en contact avec le manteau rocheux de la lune permettant la survenue de r\u00e9actions chimiques entre les deux. La qualit\u00e9 de l\u2019image est prometteuse et indique que le t\u00e9lescope James-Webb permet non seulement de voir loin dans l\u2019enfance de l\u2019Univers, mais pourra aussi faire de nouvelles d\u00e9couvertes sur notre voisinage spatial proche, dans \u00ab l\u2019ici et maintenant \u00bb.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/mali\">Mali<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Mali. Si d\u00e9couvrir les premi\u00e8res galaxies qui se sont form\u00e9es dans notre Univers est l\u2019un des principaux objectifs du t\u00e9lescope spatial James-Webb, le nouvel observatoire a d\u00e9cid\u00e9ment bien d\u2019autres talents. Pour preuve, dans la foul\u00e9e de la publication de ses toutes premi\u00e8res images scientifiques, la Nasa a \u00e9galement d\u00e9livr\u00e9 les 40 t\u00e9raoctets de [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":22647,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,11,17],"tags":[76,86,19],"class_list":["post-22648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-mali","tag-mali"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>La plan\u00e8te g\u00e9ante Jupiter immortalis\u00e9e par James-Webb - Mali<\/title>\n<meta name=\"description\" content=\"Si d\u00e9couvrir les premi\u00e8res galaxies qui se sont form\u00e9es dans notre Univers est l\u2019un des principaux objectifs du t\u00e9lescop ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La plan\u00e8te g\u00e9ante Jupiter immortalis\u00e9e par James-Webb\" \/>\n<meta property=\"og:description\" content=\"Si d\u00e9couvrir les premi\u00e8res galaxies qui se sont form\u00e9es dans notre Univers est l\u2019un des principaux objectifs du t\u00e9lescop ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2\" \/>\n<meta property=\"og:site_name\" content=\"Mali\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AfricaPressTunisiaa\" \/>\n<meta property=\"article:published_time\" content=\"2022-07-28T17:21:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-07-28T18:04:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/mali\/sites\/21\/2022\/07\/postQueueImg_11-62e2cf9617639.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1250\" \/>\n\t<meta property=\"og:image:height\" content=\"625\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/mali\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"La plan\u00e8te g\u00e9ante Jupiter immortalis\u00e9e par James-Webb\",\"datePublished\":\"2022-07-28T17:21:46+00:00\",\"dateModified\":\"2022-07-28T18:04:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2\"},\"wordCount\":476,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/mali\/sites\/21\/2022\/07\/postQueueImg_11-62e2cf9617639.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Mali\",\"mali\"],\"articleSection\":[\"Divers\",\"homepage-french\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2\",\"url\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/la-planete-geante-jupiter-immortalisee-par-james-webb-2\",\"name\":\"La plan\u00e8te g\u00e9ante Jupiter immortalis\u00e9e par James-Webb - 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