{"id":14492,"date":"2021-08-05T10:01:17","date_gmt":"2021-08-05T10:01:17","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=14492"},"modified":"2021-08-12T14:32:04","modified_gmt":"2021-08-12T14:32:04","slug":"un-astronome-amateur-a-t-il-photographie-une-eruption-sur-io","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/08\/05\/un-astronome-amateur-a-t-il-photographie-une-eruption-sur-io\/","title":{"rendered":"Un amateur a-t-il photographi\u00e9 une \u00e9ruption sur Io ?"},"content":{"rendered":"<p><strong>L&#8217;activit\u00e9 volcanique sur Io, une lune de Jupiter, est \u00e9tudi\u00e9e par les plus grands t\u00e9lescopes. Mais un astronome amateur peut-il l&#8217;observer ?\u00a0<\/strong><\/p>\n<h5>Volcanisme extraterrestre :<\/h5>\n<p>L&#8217;histoire du volcanisme sur Io d\u00e9bute il y a un peu plus de quarante ans. Le 9 mars 1979, l&#8217;ing\u00e9nieure de navigation Linda Morabito analyse les images acquises par <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/exploration-spatiale-sondes-voyager-1-2-fetent-leurs-40-ans-loin-humanite-12685\/\" target=\"_blank\" rel=\"noopener\">Voyager<\/a>. La sonde vient alors de survoler Jupiter et ses principaux satellites. Sur le limbe de l&#8217;un d&#8217;entre eux, Io,\u00a0 la scientifique remarque un panache lumineux.<\/p>\n<figure id=\"attachment_10346\" aria-describedby=\"caption-attachment-10346\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io2.jpg\" rel=\"lightbox[14492]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-10346\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io2-450x336.jpg\" alt=\"\" width=\"450\" height=\"336\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io2-450x336.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io2-768x573.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io2.jpg 804w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-10346\" class=\"wp-caption-text\">L. Morabito en 1979 \u00e0 c\u00f4t\u00e9 des \u00e9crans montrant un panache volcanique sur Io. \u00a9 NASA<\/figcaption><\/figure>\n<p>Des quatre lunes d\u00e9couvertes en 1610 par Galil\u00e9e, Io est sans doute la plus surprenante. Ce brillant satellite de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener\">magnitude<\/a> 5 serait visible \u00e0 l\u2019\u0153il nu s\u2019il n\u2019\u00e9tait pas perdu dans l\u2019\u00e9clat \u00e9blouissant de Jupiter. Il est un peu plus gros que la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/07\/24\/la-pleine-lune-de-juillet-se-leve-depuis-la-chapelle-de-chevennes\/\" target=\"_blank\" rel=\"noopener\">Lune <\/a>et orbite \u00e0 350.000 kilom\u00e8tres de son imposante voisine, ce qui d\u00e9clenche d\u2019importants effets de mar\u00e9e en son sein.<\/p>\n<figure id=\"attachment_10347\" aria-describedby=\"caption-attachment-10347\" style=\"width: 315px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io3.jpg\" rel=\"lightbox[14492]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-10347\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io3-315x450.jpg\" alt=\"\" width=\"315\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io3-315x450.jpg 315w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2019\/03\/io3.jpg 569w\" sizes=\"auto, (max-width: 315px) 100vw, 315px\" \/><\/a><figcaption id=\"caption-attachment-10347\" class=\"wp-caption-text\">Notes de Galil\u00e9e r\u00e9dig\u00e9es en janvier 1610 au sujet des satellites de Jupiter. \u00a9 Librairie de l\u2019Universit\u00e9 du Michigan<\/figcaption><\/figure>\n<p>Ce que Linda Morabito a d\u00e9couvert ce 9 mars 1979, c&#8217;est un panache volcanique haut de 300 kilom\u00e8tres !<\/p>\n<p><!--more--><\/p>\n<h5>Un satellite pizza :<\/h5>\n<p>Depuis quatre d\u00e9cennies, sondes spatiales et grands t\u00e9lescopes terrestres se sont pench\u00e9s sur Io. Ils y ont observ\u00e9 des centaines de volcans actifs. Gigantesques panaches de dioxyde de soufre et interminables coul\u00e9es de lave modifient quotidiennement la surface de cette lune qui ressemble \u00e0 une pizza.<\/p>\n<figure id=\"attachment_14494\" aria-describedby=\"caption-attachment-14494\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki2.jpg\" rel=\"lightbox[14492]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14494\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki2-450x391.jpg\" alt=\"\" width=\"450\" height=\"391\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki2-450x391.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki2.jpg 580w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14494\" class=\"wp-caption-text\">Loki Patera est la zone volcanique la plus active \u00e0 la surface du satellite Io. \u00a9 NASA<\/figcaption><\/figure>\n<p>L&#8217;activit\u00e9 la plus intense se situe au niveau de <em>Loki Patera<\/em>, un immense lac de lave de 200 kilom\u00e8tres de diam\u00e8tre. Il se trouve que <em>Loki Patera<\/em> est particuli\u00e8rement actif depuis quelques semaines (lire \u00e0 ce sujet : <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/systeme-solaire-loki-plus-puissant-volcan-lune-io-bien-eruption-mais-pas-comme-prevu-54913\/\" target=\"_blank\" rel=\"noopener\"><em>Loki, le plus puissant volcan de la lune Io, est bien entr\u00e9 en \u00e9ruption&#8230; mais pas comme pr\u00e9vu !<\/em><\/a>). Chaque \u00e9ruption se traduit par une lueur intense que les astronomes professionnels observent dans leurs grands t\u00e9lescopes.<\/p>\n<figure id=\"attachment_14493\" aria-describedby=\"caption-attachment-14493\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki.jpg\" rel=\"lightbox[14492]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14493\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/08\/loki.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14493\" class=\"wp-caption-text\">L&#8217;astronome amateur Mois\u00e9s Portillo a peut-\u00eatre photographi\u00e9 une \u00e9ruption volcanique sur Io, l&#8217;un des satellites de Jupiter, le 28 juillet 2021. \u00a9 Mois\u00e9s Portillo<\/figcaption><\/figure>\n<p>Et c&#8217;est peut-\u00eatre ce que l&#8217;amateur <a href=\"https:\/\/www.instagram.com\/heitfield7_astronomy\/\" target=\"_blank\" rel=\"noopener\">Mois\u00e9s Portillo<\/a> est parvenu \u00e0 photographier. Sur un clich\u00e9 qu&#8217;il a r\u00e9alis\u00e9 le 28 juillet, on devine un panache lumineux \u00e0 la surface du satellite avant son transit devant Jupiter (une d\u00e9tection similaire a \u00e9t\u00e9 pr\u00e9sent\u00e9e sur le <a href=\"http:\/\/www.astrosurf.com\/topic\/147942-jupiter-au-balcon-avec-une-d%C3%A9tection-in%C3%A9dite\/\" target=\"_blank\" rel=\"noopener\">forum Astrosurf<\/a>). Une \u00e9tonnante observation qui attend la confirmation des grands t\u00e9lescopes terrestres.<\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/08\/01\/admirez-jupiter-et-saturne-au-plus-pres-de-la-terre-en-aout-2021\/\" target=\"_blank\" rel=\"noopener\">Admirez Jupiter et Saturne, au plus pr\u00e8s de la Terre en ao\u00fbt 2021<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/06\/07\/spectaculaire-jeu-dombres-de-deux-satellites-sur-jupiter\/\" target=\"_blank\" rel=\"noopener\">Spectaculaire jeu d&#8217;ombres de deux satellites sur Jupiter<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/03\/19\/espagne-qui-a-vole-le-precieux-sidereus-nuncius-de-galilee\/\" target=\"_blank\" rel=\"noopener\">Espagne : qui a vol\u00e9 le pr\u00e9cieux \u201c<em>Sidereus Nuncius<\/em>\u201d de Galil\u00e9e ?<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>\u00a0ou\u00a0<a href=\"https:\/\/twitter.com\/cielmania\" target=\"_blank\" rel=\"noopener noreferrer\">Twitter<\/a>.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>L&#8217;activit\u00e9 volcanique sur Io, une lune de Jupiter, est \u00e9tudi\u00e9e par les plus grands t\u00e9lescopes. Mais un astronome amateur peut-il l&#8217;observer ?\u00a0 Volcanisme extraterrestre : L&#8217;histoire du volcanisme sur Io d\u00e9bute il y a un peu plus de quarante ans. Le 9 mars 1979, l&#8217;ing\u00e9nieure de navigation Linda Morabito analyse les images acquises par Voyager. &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/08\/05\/un-astronome-amateur-a-t-il-photographie-une-eruption-sur-io\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Un amateur a-t-il photographi\u00e9 une \u00e9ruption sur Io ?<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":14493,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[158,413,90,3068],"class_list":["post-14492","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-galilee","tag-io","tag-jupiter","tag-moises-portillo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Un amateur a-t-il photographi\u00e9 une \u00e9ruption sur Io ?<\/title>\n<meta name=\"description\" content=\"L&#039;activit\u00e9 volcanique sur Io, une lune de Jupiter, est \u00e9tudi\u00e9e par les plus grands t\u00e9lescopes. 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