{"id":4089,"date":"2015-11-03T05:50:52","date_gmt":"2015-11-03T05:50:52","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=4089"},"modified":"2015-11-09T05:53:04","modified_gmt":"2015-11-09T05:53:04","slug":"ar-2443-un-spectaculaire-groupe-de-taches-solaires","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/11\/03\/ar-2443-un-spectaculaire-groupe-de-taches-solaires\/","title":{"rendered":"AR 2443, un spectaculaire groupe de taches solaires"},"content":{"rendered":"<p><strong>S&#8217;\u00e9tirant sur 175 000 kilom\u00e8tres, AR 2443 est un nouveau groupe de taches solaires qui a quadrupl\u00e9 sa taille depuis son apparition le 29 octobre.<\/strong><\/p>\n<p>Les taches sur le <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/15\/dans-la-mer-le-soleil-est-encore-plus-beau\/\" target=\"_blank\">Soleil <\/a>sont des anomalies magn\u00e9tiques moins chaudes que le reste de la surface de notre \u00e9toile, ce qui les rend plus sombres. Elles peuvent g\u00e9n\u00e9rer des \u00e9ruptions solaires avec \u00e9jection de masse coronale qui s\u2019ach\u00e8vent en beaut\u00e9 sur Terre par des <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/31\/halloween-des-citrouilles-sous-les-aurores-boreales\/\" target=\"_blank\">aurores bor\u00e9ales<\/a>.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" frameborder=\"0\" width=\"480\" height=\"270\" src=\"\/\/www.dailymotion.com\/embed\/video\/x2hb4go\" 0=\"allowfullscreen\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p style=\"text-align: center\"><strong>En vid\u00e9o : de superbes images du Soleil pour f\u00eater les 5 ans du satellite SDO<\/strong><\/p>\n<p>Ces taches sont num\u00e9rot\u00e9es dans l\u2019ordre d\u2019apparition par la <a href=\"http:\/\/www.noaa.gov\/\" target=\"_blank\">NOAA<\/a>, (<em>National Oceanic and Atmospheric Administration<\/em>), le num\u00e9ro \u00e9tant pr\u00e9c\u00e9d\u00e9 par les lettres AR qui signifient <em>Active Region<\/em>.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil4.jpg\" rel=\"lightbox[4089]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4094\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil4-450x202.jpg\" alt=\"soleil4\" width=\"450\" height=\"202\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil4-450x202.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil4-1024x460.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil4.jpg 2028w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>AR 2443 est un ensemble d&#8217;une douzaine de taches, les plus petites couvrant la surface d&#8217;un continent terrestre. Sur l&#8217;image qu&#8217;il a r\u00e9alis\u00e9e\u00a0le 1er novembre avec une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/05\/bien-choisir-sa-premiere-lunette-astronomique\/\" target=\"_blank\">lunette astronomique<\/a> de 204 mm de diam\u00e8tre depuis N\u00eemes (en filtrant la lumi\u00e8re solaire), l&#8217;astrophotographe <a href=\"http:\/\/www.photoastro.com\/\" target=\"_blank\">Philippe Tosi<\/a>\u00a0a ajout\u00e9 la Terre \u00e0 la m\u00eame \u00e9chelle pour donner une id\u00e9e de la taille de ce groupe de taches.<\/p>\n<p><!--more-->L&#8217;image ci-dessous a \u00e9t\u00e9 prise le 2 novembre par le satellite <a href=\"http:\/\/sdo.gsfc.nasa.gov\/\" target=\"_blank\">SDO<\/a>, <em>Solar Dynamics Observatory.<\/em><\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil5.jpg\" rel=\"lightbox[4089]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4095\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil5-450x450.jpg\" alt=\"soleil5\" width=\"450\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil5-450x450.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil5-150x150.jpg 150w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/11\/soleil5.jpg 1000w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>On ne regarde jamais le Soleil sans protection, mais vous pourrez observer ce groupe de taches solaires sans danger \u00e0 l&#8217;\u0153il nu si vous avez conserv\u00e9 une paire de lunettes filtrantes acquise \u00e0 l&#8217;occasion de l<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/20\/20-mars-le-soleil-avait-bien-rendez-vous-avec-la-lune\/\" target=\"_blank\">&#8216;\u00e9clipse partielle de Soleil<\/a> du 20 mars dernier.<\/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>S&#8217;\u00e9tirant sur 175 000 kilom\u00e8tres, AR 2443 est un nouveau groupe de taches solaires qui a quadrupl\u00e9 sa taille depuis son apparition le 29 octobre. Les taches sur le Soleil sont des anomalies magn\u00e9tiques moins chaudes que le reste de la surface de notre \u00e9toile, ce qui les rend plus sombres. Elles peuvent g\u00e9n\u00e9rer des &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/11\/03\/ar-2443-un-spectaculaire-groupe-de-taches-solaires\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">AR 2443, un spectaculaire groupe de taches solaires<\/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":4090,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[1346,395,1347,97,261],"class_list":["post-4089","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-ar-2443","tag-aurore-boreale","tag-philippe-tosi","tag-soleil","tag-tache-solaire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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