{"id":212451,"date":"2024-02-21T11:49:00","date_gmt":"2024-02-21T11:49:00","guid":{"rendered":"https:\/\/www.webdo.tn\/fr\/blog\/la-cite-des-sciences-suit-le-satellite-europeen-qui-doit-retomber-sur-terre-ce-mercredi\/212451\/"},"modified":"2025-05-20T22:37:40","modified_gmt":"2025-05-20T22:37:40","slug":"la-cite-des-sciences-suit-le-satellite-europeen-qui-doit-retomber-sur-terre-ce-mercredi","status":"publish","type":"post","link":"https:\/\/www.webdo.tn\/fr\/actualite\/international\/la-cite-des-sciences-suit-le-satellite-europeen-qui-doit-retomber-sur-terre-ce-mercredi\/212451\/","title":{"rendered":"La Cit\u00e9 des Sciences suit le satellite europ\u00e9en qui doit retomber sur Terre ce mercredi"},"content":{"rendered":"<p>Un satellite europ\u00e9en lanc\u00e9 en 1995 doit retomber sur notre plan\u00e8te ce mercredi 21 f\u00e9vrier. La cit\u00e9 des sciences de Tunis dit suivre cette op\u00e9ration.\u00a0<\/p>\n<p>\t\t\t\t\t\t\t\t\tL&rsquo;European Remote-Sensing Satellite-2 doit revenir sur Terre ce mercredi 21 f\u00e9vrier et se consumer dans l&rsquo;atmosph\u00e8re. On ne sait pas o\u00f9, ni quand il retombera sur la plan\u00e8te, mais l&rsquo;op\u00e9ration promet d&rsquo;\u00eatre sans risque pour les humains, estime l&rsquo;Agence spatiale internationale.<\/p>\n<p>Le Centre europ\u00e9en des op\u00e9rations spatiales (ESOC) de l\u2019ESA pr\u00e9voit la rentr\u00e9e finale du satellite dans les couches basses de l\u2019atmosph\u00e8re pour mercredi \u00e0 11h14 GMT, avec une marge d\u2019incertitude de plus ou moins 9 heures.<\/p>\n<p>\u00ab La cit\u00e9 des sciences \u00e0 Tunis assure le suivi de l\u2019entr\u00e9e incontr\u00f4l\u00e9e dans l\u2019atmosph\u00e8re terrestre du satellite europ\u00e9en d\u2019observation de la Terre, ERS-2, lanc\u00e9 par l\u2019agence spatiale europ\u00e9enne (ESA) en 1995 et qui n\u2019est plus en service depuis 13 ans \u00bb, a d\u00e9clar\u00e9 dans ce sens l\u2019\u2019encadrant scientifique de Hichem Ben Yahya. Il ajout\u00e9 que le satellite devrait se consumer quasiment enti\u00e8rement dans l\u2019atmosph\u00e8re, mercredi 21 f\u00e9vrier 2024.<\/p>\n<p>L\u2019essentiel des 2,3 tonnes de ERS-2 doit se consumer quand il atteindra les couches basses de l\u2019atmosph\u00e8re mercredi, \u00e0 environ 80 km d\u2019altitude. \u00ab On estime que le plus gros fragment du satellite pouvant rejoindre le sol fait 52 kg \u00bb, a d\u00e9clar\u00e9 la semaine derni\u00e8re Henri Laur, de la direction d\u2019observation de la Terre \u00e0 l\u2019ESA.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;European Remote-Sensing Satellite-2 doit revenir sur Terre ce mercredi 21 f\u00e9vrier et se consumer dans l&rsquo;atmosph\u00e8re. On ne sait pas o\u00f9, ni quand il retombera s&#8230;<\/p>\n","protected":false},"author":3175,"featured_media":247961,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2598],"tags":[5945,6971,2608],"class_list":["post-212451","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-international","tag-satellite","tag-terre","tag-tunisie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>La Cit\u00e9 des Sciences suit le satellite europ\u00e9en qui doit retomber sur Terre ce mercredi<\/title>\n<meta name=\"description\" content=\"L&#039;European Remote-Sensing Satellite-2 doit revenir sur Terre ce mercredi 21 f\u00e9vrier et se consumer dans l&#039;atmosph\u00e8re. 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