{"id":8840,"date":"2018-03-08T18:26:29","date_gmt":"2018-03-08T18:26:29","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=8840"},"modified":"2018-03-19T18:02:14","modified_gmt":"2018-03-19T18:02:14","slug":"seis-sismometre-sonder-coeur-de-planete-mars","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/03\/08\/seis-sismometre-sonder-coeur-de-planete-mars\/","title":{"rendered":"Seis, un sismom\u00e8tre pour sonder le c\u0153ur de la plan\u00e8te Mars"},"content":{"rendered":"<p><strong>C&#8217;est d\u00e9but mai que devrait s&#8217;envoler la mission am\u00e9ricaine <em>Insight<\/em> en direction de la plan\u00e8te Mars avec \u00e0 son bord le sismom\u00e8tre fran\u00e7ais <em>Seis<\/em>.<\/strong><\/p>\n<p>2018 sera l&#8217;ann\u00e9e de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/02\/16\/mars-express-survole-pole-nord-de-planete-rouge\/\" target=\"_blank\" rel=\"noopener\">Plan\u00e8te rouge<\/a> :\u00a0lors de l&#8217;opposition tr\u00e8s attendue le 27 juillet elle se trouvera \u00e0 un peu moins de 58 millions de km de la Terre et son disque orang\u00e9 (une couleur provoqu\u00e9e par l\u2019oxyde de fer pr\u00e9sent en grande quantit\u00e9 dans le sol martien) aura un diam\u00e8tre de 24 sec d\u2019arc et une\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/05\/06\/quest-lechelle-magnitudes-astronomie\/\" target=\"_blank\" rel=\"noopener\">magnitude<\/a>\u00a0de -2,8. Ce sera alors l\u2019astre le plus brillant du ciel nocturne si on fait abstraction de la\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/01\/02\/super-lune-jour-de-lan\/\" target=\"_blank\" rel=\"noopener\">Lune<\/a>.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/02\/seis.jpg\" rel=\"lightbox[8840]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-8841\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/02\/seis-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/02\/seis-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/02\/seis-768x460.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/02\/seis-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2018\/02\/seis.jpg 1502w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Mais nous aurons un second rendez-vous avec la quatri\u00e8me plan\u00e8te du Syst\u00e8me solaire : fin novembre la station\u00a0<a href=\"https:\/\/mars.nasa.gov\/insight\/\" target=\"_blank\" rel=\"noopener\"><em>Insight<\/em><\/a>\u00a0lanc\u00e9e six mois plus t\u00f4t par la NASA se posera \u00e0 la surface. Objectif : \u00e9couter battre le\u00a0c\u0153ur de Mars.<!--more--><\/p>\n<p><em>Insight<\/em> (<em>INterior exploration using Seismic Investigations, Geodesy and Heat Transport<\/em>) sera la douzi\u00e8me mission de <a href=\"https:\/\/science.nasa.gov\/about-us\/smd-programs\/discovery\" target=\"_blank\" rel=\"noopener\"><em>Discovery<\/em><\/a>, le programme am\u00e9ricain imagin\u00e9 au d\u00e9but des ann\u00e9es 1990 qui regroupe des missions peu co\u00fbteuses d&#8217;exploration robotis\u00e9e du Syst\u00e8me solaire (comme <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/24\/sonde-dawn-zoome-letrange-cratere-occator\/\" target=\"_blank\" rel=\"noopener\">Dawn<\/a>, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/02\/clap-de-fin-pour-la-sonde-messenger-sur-mercure\/\" target=\"_blank\" rel=\"noopener\">Messenger<\/a> ou encore <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/01\/30\/en-video-orbiteur-mars-express-survole-mawrth-vallis\/\" target=\"_blank\" rel=\"noopener\">Mars Express<\/a>).\u00a0\u00c0 la diff\u00e9rence du <em>rover<\/em>\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/01\/28\/opportunity-14-ans-planete-mars\/\" target=\"_blank\" rel=\"noopener\">Opportunity<\/a> qui se d\u00e9place \u00e0 la surface de Mars, <em>Insight<\/em> est un <em>lander<\/em>, une station fixe\u00a0destin\u00e9e \u00e0 \u00e9tudier la structure interne de la plan\u00e8te pour y d\u00e9celer une \u00e9ventuelle activit\u00e9 g\u00e9ologique.<\/p>\n<p>Pour cela la station sera \u00e9quip\u00e9e d&#8217;un\u00a0sismom\u00e8tre tr\u00e8s sensible appel\u00e9 Seis (<em>Seismic Experiment for Interior Structures<\/em>) d\u00e9velopp\u00e9 en France et qui permettra aux plan\u00e9tologues d&#8217;\u00e9tudier la structure de la cro\u00fbte, du manteau et du noyau de Mars ainsi que les impacts m\u00e9t\u00e9oritiques. Explications :<\/p>\n<div class=\"PopinEmbedVideo__embedHtml___3b04u\">\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\/x5j5hhv\" 0=\"allowfullscreen\" 1=\"allow=&quot;autoplay&quot;&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n<\/div>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>C&#8217;est d\u00e9but mai que devrait s&#8217;envoler la mission am\u00e9ricaine Insight en direction de la plan\u00e8te Mars avec \u00e0 son bord le sismom\u00e8tre fran\u00e7ais Seis. 2018 sera l&#8217;ann\u00e9e de la Plan\u00e8te rouge :\u00a0lors de l&#8217;opposition tr\u00e8s attendue le 27 juillet elle se trouvera \u00e0 un peu moins de 58 millions de km de la Terre et &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/03\/08\/seis-sismometre-sonder-coeur-de-planete-mars\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Seis, un sismom\u00e8tre pour sonder le c\u0153ur de la plan\u00e8te Mars<\/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":8841,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[2449,2448,116,486,115,2447],"class_list":["post-8840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-discovery","tag-insight","tag-mars","tag-nasa","tag-planete-rouge","tag-seis"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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