{"id":14797,"date":"2021-10-22T16:50:15","date_gmt":"2021-10-22T16:50:15","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=14797"},"modified":"2021-11-09T17:06:02","modified_gmt":"2021-11-09T17:06:02","slug":"la-celebre-comete-tchouri-revient-nous-rendre-visite","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/10\/22\/la-celebre-comete-tchouri-revient-nous-rendre-visite\/","title":{"rendered":"La c\u00e9l\u00e8bre com\u00e8te Tchouri revient nous rendre visite"},"content":{"rendered":"<p><strong>Survol\u00e9e par la sonde europ\u00e9enne Rosetta en 2015, la c\u00e9l\u00e8bre com\u00e8te Tchouri (67P\/Churyumov-Gerasimenko) est de retour.<\/strong><\/p>\n<h5>D\u00e9couverte russe :<\/h5>\n<p>L&#8217;histoire de la com\u00e8te Tchouri d\u00e9bute en octobre 1969. Sur des plaques photographiques r\u00e9alis\u00e9es par <strong>Svetlana Ivanovna Gerasimenko<\/strong> \u00e0 l\u2019Institut d\u2019astrophysique d\u2019Alma-Ata , <strong>Klim Churyumov<\/strong> remarque une petite tache floue .<\/p>\n<figure id=\"attachment_6525\" aria-describedby=\"caption-attachment-6525\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/klim_chury.jpg\" rel=\"lightbox[14797]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6525\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/klim_chury-450x301.jpg\" alt=\"\" width=\"450\" height=\"301\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/klim_chury-450x301.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/klim_chury-768x513.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/klim_chury.jpg 1000w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-6525\" class=\"wp-caption-text\">Klim Churyumov, l&#8217;un des d\u00e9couvreurs de la com\u00e8te Tchouri, est d\u00e9c\u00e9d\u00e9 en 2016. \u00a9 ESA<\/figcaption><\/figure>\n<p>L\u2019astre en question, qui s\u2019est d\u00e9plac\u00e9 devant le fond des \u00e9toiles, est une nouvelle com\u00e8te p\u00e9riodique. Elle prend le nom des deux astronomes russes, 67P\/Churyumov-Gerasimenko. M\u00eame si elle revient tous les 6,42 ans, la com\u00e8te 67P retombe ensuite dans l&#8217;oubli pendant plusieurs d\u00e9cennies. <!--more--><\/p>\n<h5>Mission spectaculaire :<\/h5>\n<p>En 2003, l\u2019<a href=\"http:\/\/www.esa.int\/fre\/ESA_in_your_country\/France\" target=\"_blank\" rel=\"noopener\">ESA<\/a> pr\u00e9voit de lancer une sonde, Rosetta, en direction de la com\u00e8te <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/comete-comete-46p-wirtanen-chauffe-mysterieusement-459\/\" target=\"_blank\" rel=\"noopener\">46P\/Wirtanen<\/a>. C&#8217;est un grand projet sur lequel l\u2019agence europ\u00e9enne travaille depuis une d\u00e9cennie.\u00a0<span id=\"more-6524\"><\/span>Mais une d\u00e9faillance du lanceur \u00e0 la derni\u00e8re minute implique de modifier la mission et son objectif. Rosetta est finalement exp\u00e9di\u00e9e en direction de la com\u00e8te 67P\/Churyumov-Gerasimenko. Cette derni\u00e8re prend le nom de Tchouri, plus facile pour communiquer avec les m\u00e9dias et le grand public.<\/p>\n<figure id=\"attachment_1090\" aria-describedby=\"caption-attachment-1090\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/11\/comet1.jpg\" rel=\"lightbox[14797]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1090\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/11\/comet1-450x337.jpg\" alt=\"\" width=\"450\" height=\"337\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/11\/comet1-450x337.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/11\/comet1-1024x768.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2014\/11\/comet1.jpg 1200w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-1090\" class=\"wp-caption-text\">Repr\u00e9sentation du robot Philae \u00e0 la surface de la com\u00e8te 67P. \u00a9 ESA<\/figcaption><\/figure>\n<p>Commence alors une mission exceptionnelle. Apr\u00e8s avoir survol\u00e9 les ast\u00e9ro\u00efdes Steins en 2008 et Lut\u00e8ce en 2010, la sonde Rosetta largue sur la com\u00e8te un petit robot, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/17\/incroyables-images-de-philae-au-dessus-de-sa-comete\/\" target=\"_blank\" rel=\"noopener\">Philae<\/a>, le 12 novembre 2014. Elle poursuit jusqu&#8217;en septembre 2016 l&#8217;exploration \u00e0 distance de cet astre chevelu, dont les deux lobes distincts prouvent qu&#8217;elle s&#8217;est form\u00e9e suite \u00e0 une <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/comete-comete-tchouri-serait-nee-collision-violente-59937\/\" target=\"_blank\" rel=\"noopener\">violente collision<\/a>.<\/p>\n<h5>Le retour de Tchouri :<\/h5>\n<p>67P revient nous voir pour la premi\u00e8re fois depuis son survol par Rosetta. Elle sera au plus pr\u00e8s de la Terre les 11 et 12 novembre 2021, \u00e0 61 millions de kilom\u00e8tres. Il s&#8217;agit de la meilleure approche des 193 prochaines ann\u00e9es. Malgr\u00e9 cela, sa <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener\">magnitude<\/a> ne devrait pas d\u00e9passer 8. Un t\u00e9lescope s&#8217;av\u00e8re donc indispensable pour esp\u00e9rer la rep\u00e9rer ou la photographier.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/carte-tchouri.jpg\" rel=\"lightbox[14797]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-14799\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/carte-tchouri-450x314.jpg\" alt=\"\" width=\"450\" height=\"314\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/carte-tchouri-450x314.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/carte-tchouri-768x536.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/carte-tchouri.jpg 867w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>La com\u00e8te circule entre les constellations du Taureau et des G\u00e9meaux (<a href=\"https:\/\/in-the-sky.org\/news.php?id=20211113_19_100\" target=\"_blank\" rel=\"noopener\">cartes et infos<\/a>). Au plus pr\u00e8s de la Terre, elle sera situ\u00e9e \u00e0 proximit\u00e9 de la brillante \u00e9toile <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/18\/17-mars-la-lune-glisse-sous-castor-et-pollux\/\" target=\"_blank\" rel=\"noopener\">Pollux<\/a>. On pourra suivre sa prestation dans cette <a href=\"https:\/\/spaceweathergallery.com\/comet_gallery.html\" target=\"_blank\" rel=\"noopener\">galerie d&#8217;images com\u00e9taires<\/a>.<\/p>\n<figure id=\"attachment_14820\" aria-describedby=\"caption-attachment-14820\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/comet.jpg\" rel=\"lightbox[14797]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-14820\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/comet-450x289.jpg\" alt=\"\" width=\"450\" height=\"289\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/comet-450x289.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/comet-1024x657.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/comet-768x493.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/10\/comet.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-14820\" class=\"wp-caption-text\">La com\u00e8te 67P (Tchouri) photographi\u00e9e le 2 octobre 2021. \u00a9 Michael J\u00e4ger<\/figcaption><\/figure>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/06\/07\/c-2021-j1-maury-attard-la-comete-francaise-que-lon-nesperait-plus\/\" target=\"_blank\" rel=\"noopener\">C\/2021 J1 Maury-Attard, la com\u00e8te fran\u00e7aise inesp\u00e9r\u00e9e<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/03\/23\/interview-michel-ory-astronome-amateur-et-chasseur-de-cometes\/\" target=\"_blank\" rel=\"noopener\">Interview : Michel Ory, chasseur de com\u00e8tes (et d&#8217;ast\u00e9ro\u00efdes)<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/01\/13\/la-comete-c-2021-a1-leonard-sannonce-prometteuse\/\" target=\"_blank\" rel=\"noopener\">La com\u00e8te Leonard va-t-elle tenir ses promesses en 2021 ?<\/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>Survol\u00e9e par la sonde europ\u00e9enne Rosetta en 2015, la c\u00e9l\u00e8bre com\u00e8te Tchouri (67P\/Churyumov-Gerasimenko) est de retour. D\u00e9couverte russe : L&#8217;histoire de la com\u00e8te Tchouri d\u00e9bute en octobre 1969. Sur des plaques photographiques r\u00e9alis\u00e9es par Svetlana Ivanovna Gerasimenko \u00e0 l\u2019Institut d\u2019astrophysique d\u2019Alma-Ata , Klim Churyumov remarque une petite tache floue . L\u2019astre en question, qui s\u2019est &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/10\/22\/la-celebre-comete-tchouri-revient-nous-rendre-visite\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La c\u00e9l\u00e8bre com\u00e8te Tchouri revient nous rendre visite<\/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":14798,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[522,510,471,3111],"class_list":["post-14797","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-67pchuryumov-gerasimenko","tag-philae","tag-sonde-rosetta","tag-tchouri"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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