{"id":600,"date":"2014-03-16T14:03:52","date_gmt":"2014-03-16T19:03:52","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=600"},"modified":"2014-04-02T11:54:25","modified_gmt":"2014-04-02T16:54:25","slug":"mercure-retrecit","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/mercure-retrecit\/","title":{"rendered":"Mercure r\u00e9tr\u00e9cit"},"content":{"rendered":"<div id=\"attachment_601\" style=\"width: 237px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/03\/2Fram_Rupes_Near_Terminator.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-601\" class=\"size-medium wp-image-601\" alt=\"Une nouvelle \u00e9tude montre que le rayon de la plan\u00e8te Mercure a r\u00e9tr\u00e9ci de 7 km au cours des derniers 4 milliards d\u2019ann\u00e9es. (Cr\u00e9dit photo : NASA \/ Laboratoire de physique appliqu\u00e9e de l'Universit\u00e9 Johns Hopkins \/ Institut Carnegie de Washington)\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/03\/2Fram_Rupes_Near_Terminator-227x300.jpg\" width=\"227\" height=\"300\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/03\/2Fram_Rupes_Near_Terminator-227x300.jpg 227w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/03\/2Fram_Rupes_Near_Terminator.jpg 400w\" sizes=\"auto, (max-width: 227px) 100vw, 227px\" \/><\/a><p id=\"caption-attachment-601\" class=\"wp-caption-text\">Une nouvelle \u00e9tude montre que le rayon de la plan\u00e8te Mercure a r\u00e9tr\u00e9ci de 7 km au cours des derniers 4 milliards d\u2019ann\u00e9es. (Cr\u00e9dit photo : NASA \/ Laboratoire de physique appliqu\u00e9e de l&#8217;Universit\u00e9 Johns Hopkins \/ Institut Carnegie de Washington)<\/p><\/div>\n<p>Depuis sa formation il y 4 milliards d\u2019ann\u00e9es, Mercure r\u00e9tr\u00e9ci au fur et \u00e0 mesure que son coeur de fer liquide se solidifie. Le processus laisse des escarpements appel\u00e9s\u00a0\u00ab rupes\u00a0\u00bb (scarps) qui se retrouvent un peu partout en surface. En utilisant des images de la sonde MESSENGER de la NASA, les chercheurs ont calcul\u00e9 que ces escarpements sont des marques du r\u00e9tr\u00e9cissement de 7 km du rayon de Mercure depuis sa formation. Cet estim\u00e9 est plus haut que l\u2019estimation pr\u00e9c\u00e9dente calcul\u00e9e \u00e0 l\u2019aide de donn\u00e9es de la sonde Mariner 10 dans les ann\u00e9es 1970.<\/p>\n<p><!--more--><\/p>\n<p>Pour lire l\u2019article original publi\u00e9 dans\u00a0<em>Nature Geoscience<\/em>\u00a0le 16 mars 2014,\u00a0<span style=\"text-decoration: underline;\"><a href=\"http:\/\/www.nature.com\/ngeo\/journal\/vaop\/ncurrent\/full\/ngeo2097.html\" target=\"_blank\">cliquez\u00a0ici<\/a>.<\/span><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Auteur \u00e0 contacter pour plus d\u2019informations<\/strong><\/span><\/p>\n<h4><a href=\"http:\/\/home.dtm.ciw.edu\/users\/pbyrne\/\" target=\"_blank\">Paul Byrne<\/a>, Carnegie Institution of Washington<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Depuis sa formation il y 4 milliards d\u2019ann\u00e9es, Mercure r\u00e9tr\u00e9ci au fur et \u00e0 mesure que son coeur de fer liquide se solidifie. Le processus laisse des escarpements appel\u00e9s\u00a0\u00ab rupes\u00a0\u00bb (scarps) qui se retrouvent un peu partout en surface. En utilisant des images de la sonde MESSENGER de la NASA, les chercheurs ont calcul\u00e9 que [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":601,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[531],"tags":[689],"class_list":["post-600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest-fr","tag-espace"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/03\/2Fram_Rupes_Near_Terminator.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-9G","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=600"}],"version-history":[{"count":2,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/600\/revisions"}],"predecessor-version":[{"id":701,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/600\/revisions\/701"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/601"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=600"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}