{"id":73768,"date":"2025-12-24T12:00:00","date_gmt":"2025-12-24T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/une-exolune-pourrait-etre-super-volcanique"},"modified":"2025-12-25T00:30:29","modified_gmt":"2025-12-25T00:30:29","slug":"une-exolune-pourrait-etre-super-volcanique","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique","title":{"rendered":"Une Exolune Pourrait \u00catre Super-Volcanique"},"content":{"rendered":"

Africa-Press – Senegal. <\/strong><\/span>Le premier satellite d\u2019une plane\u0300te extrasolaire \u2013 appele\u0301 aussi \u00ab exolune \u00bb \u2013 a peut-e\u0302tre e\u0301te\u0301 de\u0301couvert dans le voisinage de Wasp-39b, une exoplane\u0300te de type Jupiter chaud situe\u0301e a\u0300 700 anne\u0301es-lumie\u0300re de la Terre. Plusieurs indices sugge\u0300rent l\u2019existence d\u2019un tel astre.<\/p>\n

En 2023, le te\u0301lescope James-Webb avait de\u0301tecte\u0301 du dioxyde de soufre et du dioxyde de carbone dans l\u2019atmosphe\u0300re de Wasp-39b, d\u2019autres instruments ayant de\u0301cele\u0301 du sodium et du potassium. Apre\u0300s avoir analyse\u0301 les variations de l\u2019ensemble de ces substances sur plus d\u2019une dizaine d\u2019anne\u0301es, des astronomes ame\u0301ricains soutiennent qu\u2019elles ne proviennent pas de la plane\u0300te elle-me\u0302me… mais d\u2019une lune volcanique orbitant autour !<\/p>\n

Un nuage de gaz autour de la plane\u0300te ho\u0302te<\/b><\/p>\n

Un satellite qui, a\u0300 l\u2019instar de Io (lune de Jupiter) dans notre syste\u0300me solaire, e\u0301jecterait des quantite\u0301s tre\u0300s importantes de matie\u0300res dans l\u2019espace. Elles alimenteraient un nuage de gaz autour de la plane\u0300te ho\u0302te qui retomberait e\u0301pisodiquement dans son atmosphe\u0300re.<\/p>\n

Pour plus d’informations et d’analyses sur la Senegal<\/span>, suivez Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Senegal. Le premier satellite d\u2019une plane\u0300te extrasolaire \u2013 appele\u0301 aussi \u00ab exolune \u00bb \u2013 a peut-e\u0302tre e\u0301te\u0301 de\u0301couvert dans le voisinage de Wasp-39b, une exoplane\u0300te de type Jupiter chaud situe\u0301e a\u0300 700 anne\u0301es-lumie\u0300re de la Terre. Plusieurs indices sugge\u0300rent l\u2019existence d\u2019un tel astre. En 2023, le te\u0301lescope James-Webb avait de\u0301tecte\u0301 du dioxyde de […]<\/p>\n","protected":false},"author":82,"featured_media":73767,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-73768","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"yoast_head":"\nUne Exolune Pourrait \u00catre Super-Volcanique - Senegal<\/title>\n<meta name=\"description\" content=\"Le premier satellite d\u2019une plane\u0300te extrasolaire \u2013 appele\u0301 aussi \u00ab exolune \u00bb \u2013 a peut-e\u0302tre e\u0301te\u0301 de\u0301couvert dans le voi ...\" \/>\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\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Une Exolune Pourrait \u00catre Super-Volcanique\" \/>\n<meta property=\"og:description\" content=\"Le premier satellite d\u2019une plane\u0300te extrasolaire \u2013 appele\u0301 aussi \u00ab exolune \u00bb \u2013 a peut-e\u0302tre e\u0301te\u0301 de\u0301couvert dans le voi ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-24T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-25T00:30:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1766650814.30044.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\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=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Une Exolune Pourrait \u00catre Super-Volcanique\",\"datePublished\":\"2025-12-24T12:00:00+00:00\",\"dateModified\":\"2025-12-25T00:30:29+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique\"},\"wordCount\":210,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1766650814.30044.jpg\",\"keywords\":[\"Senegal\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/une-exolune-pourrait-etre-super-volcanique\",\"name\":\"Une Exolune Pourrait \u00catre Super-Volcanique - 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