{"id":22524,"date":"2026-03-05T17:31:17","date_gmt":"2026-03-05T17:31:17","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=22524"},"modified":"2026-03-15T10:48:27","modified_gmt":"2026-03-15T10:48:27","slug":"en-image-leruption-de-la-comete-29p-schwassmann-wachmann","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2026\/03\/05\/en-image-leruption-de-la-comete-29p-schwassmann-wachmann\/","title":{"rendered":"L&#8217;\u00e9ruption de la com\u00e8te 29P\/S-W se confirme"},"content":{"rendered":"<p><strong>L&#8217;\u00e9ruption r\u00e9cente de la com\u00e8te 29P\/S- W (Schwassmann-Wachmann) a bien provoqu\u00e9 l&#8217;apparition d&#8217;un halo de particules glac\u00e9es.<\/strong><\/p>\n<h5>Une com\u00e8te \u00e0 sursauts :<\/h5>\n<p>Il se passe toujours quelque chose sur la com\u00e8te 29P\/Schwassmann-Wachmann. Comme je vous le racontais dans <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2026\/02\/14\/nouvelle-eruption-sur-la-comete-29p-schwassmann-wachmann\/\" target=\"_blank\" rel=\"noopener\">mon billet du 14 f\u00e9vrier 2026<\/a>, une nouvelle \u00e9ruption s&#8217;est produite. Il faut dire que l&#8217;on en observe r\u00e9guli\u00e8rement sur cet astre chevelu d\u00e9couvert il y a un si\u00e8cle. Ces \u00e9ruptions sont caus\u00e9es par le <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Cryovolcan\" target=\"_blank\" rel=\"noopener\">cryovolcanisme<\/a>. Lorsque la surface gel\u00e9e du noyau de la com\u00e8te se fracture, elle laisse \u00e9chapper de la glace et des poussi\u00e8res. Chaque \u00e9ruption s&#8217;annonce par une baisse d\u2019\u00e9clat de la com\u00e8te. C&#8217;est le signe que la cro\u00fbte du noyau est devenue herm\u00e9tique \u00e0 tout d\u00e9gazage. Quand la pression devient trop forte, la surface finit par c\u00e9der. Dans les semaines qui suivent, on doit alors observer autour du noyau de la com\u00e8te l\u2019expansion d\u2019un halo de particules glac\u00e9es. C&#8217;est bien ce qu&#8217;a photographi\u00e9 <a href=\"https:\/\/www.facebook.com\/photo\/?fbid=25911499268504150&amp;set=a.428609397219821\" target=\"_blank\" rel=\"noopener\">Akihiro Yamazaki<\/a> le 22 f\u00e9vrier dans la <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Lion_(constellation)\" target=\"_blank\" rel=\"noopener\">constellation du Lion<\/a> :<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1.jpg\" rel=\"lightbox[22524]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-22526\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1-450x450.jpg\" alt=\"\" width=\"450\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1-450x450.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1-1024x1024.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1-150x150.jpg 150w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1-768x768.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2026\/02\/comet2-1.jpg 1200w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>30 minutes de poses avec un <a href=\"https:\/\/www.telescopes-et-accessoires.fr\/tubes-optiques-de-telescope\/8539-epsilon-180ed-ota-tube-seul-coulant-3175-3948600037170.html?\" target=\"_blank\" rel=\"noopener\">t\u00e9lescope Epsilon 180 ED<\/a> permettent de visualiser ce halo. Remarquez la couleur verd\u00e2tre du carbone diatomique pr\u00e9sent dans la com\u00e8te, excit\u00e9 par le rayonnement solaire. L&#8217;\u00e9toile la plus brillante du champ est HD 99005 (<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener\">magnitude<\/a> 8,8). Notez aussi la pr\u00e9sence d&#8217;une lointaine galaxie de magnitude 16, PGC 104111.<\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2022\/02\/07\/lexplosion-dune-comete-aurait-decime-des-peuples-amerindiens\/\" target=\"_blank\" rel=\"noopener\">L\u2019explosion d\u2019une com\u00e8te aurait d\u00e9cim\u00e9 des peuples Am\u00e9rindiens<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/12\/28\/dans-le-ciel-de-la-palma-la-comete-leonard-fait-son-show\/\" target=\"_blank\" rel=\"noopener\">Dans le ciel de La Palma, la com\u00e8te Leonard fait son show<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/12\/23\/en-avril-1066-le-retour-de-la-comete-de-halley-fut-exceptionnel\/\" target=\"_blank\" rel=\"noopener\">En 1066, le passage de la com\u00e8te de Halley fut exceptionnel<\/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>.<\/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;\u00e9ruption r\u00e9cente de la com\u00e8te 29P\/S- W (Schwassmann-Wachmann) a bien provoqu\u00e9 l&#8217;apparition d&#8217;un halo de particules glac\u00e9es. Une com\u00e8te \u00e0 sursauts : Il se passe toujours quelque chose sur la com\u00e8te 29P\/Schwassmann-Wachmann. Comme je vous le racontais dans mon billet du 14 f\u00e9vrier 2026, une nouvelle \u00e9ruption s&#8217;est produite. Il faut dire que l&#8217;on en &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2026\/03\/05\/en-image-leruption-de-la-comete-29p-schwassmann-wachmann\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">L&#8217;\u00e9ruption de la com\u00e8te 29P\/S-W se confirme<\/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":22525,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[3928,3942],"class_list":["post-22524","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-29p-schwassmann-wachmann","tag-akihiro-yamazaki"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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