{"id":508,"date":"2016-02-08T09:21:00","date_gmt":"2016-02-08T08:21:00","guid":{"rendered":"https:\/\/kids.esa.int\/sentinel-3_getting_ready_to_watch_over_earth\/"},"modified":"2026-10-08T00:29:01","modified_gmt":"2026-10-07T22:29:01","slug":"sentinel-3_getting_ready_to_watch_over_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/sentinel-3_getting_ready_to_watch_over_earth\/","title":{"rendered":"Sentinelle 3 s\u2019appr\u00eate \u00e0 veiller sur la Terre"},"content":{"rendered":"<div class=\"lede\">\n<p>Le 16 f\u00e9vrier 2016, le satellite Sentinelle 3 de l\u2019ESA sera lanc\u00e9 en orbite autour de la Terre ! Sentinelle 3 est le dernier d\u2019une flotte de satellites avanc\u00e9s dont la mission consiste \u00e0 \u00e9tudier les terres, les oc\u00e9ans et l\u2019atmosph\u00e8re de notre plan\u00e8te.<\/p>\n<\/div>\n<p>Le satellite Sentinelle 3 sera d\u00e9di\u00e9 \u00e0 la surveillance des oc\u00e9ans. Veiller sur ces \u00e9tendues d\u2019eau sal\u00e9e, qui recouvrent 70 % de la plan\u00e8te, nous permet de contr\u00f4ler la sant\u00e9 de la Terre. L\u2019\u00e9tat des mers nous impacte tous, o\u00f9 que nous vivions. Les r\u00e9serves d\u2019eau de notre plan\u00e8te sont une ressource importante que nous devons prot\u00e9ger.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1280\" data-credit=\"ESA\u2013Pierre Carril\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/02\/Sentinel-3\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2016\/02\/sentinel-3\/17887876-2-eng-GB\/Sentinel-3.jpg\" alt=\"Sentinel-3\"><figcaption>Sentinel-3<\/figcaption><\/figure>\n<p>Sentinelle 3 va graviter \u00e0 plus de 800 km au-dessus de la Terre. C\u2019est encore plus haut que la Station spatiale internationale, qui \u00e9volue en orbite \u00e0 400 km d\u2019altitude ! De l\u00e0-haut, le satellite pourra contr\u00f4ler avec pr\u00e9cision la temp\u00e9rature, la couleur et le niveau des oc\u00e9ans, mais aussi mesurer l\u2019\u00e9paisseur des glaces de mer. Ces donn\u00e9es sont tr\u00e8s importantes car nous pouvons les utiliser pour suivre le niveau de la mer, la pollution des oc\u00e9ans et la sant\u00e9 de la vie marine.<\/p>\n<p>Quand il n\u2019\u00e9tudiera pas les oc\u00e9ans, le satellite Sentinelle 3 aidera son grand fr\u00e8re Sentinelle 2 \u00e0 surveiller les terres de notre plan\u00e8te, en mesurant la hauteur des lacs et des rivi\u00e8res ou en contr\u00f4lant les risques de feux de for\u00eat.<\/p>\n<p>Deux satellites du programme Sentinelle sont d\u00e9j\u00e0 en orbite, et quatre autres devraient \u00eatre lanc\u00e9s apr\u00e8s Sentinelle 3. La dur\u00e9e de service de chaque satellite sera d\u2019au moins sept ans. Les scientifiques esp\u00e8rent que la mission Sentinelle durera encore plus longtemps : ils ont \u00e9quip\u00e9 les satellites de suffisamment de carburant pour les faire fonctionner pendant 12 ans !<\/p>\n<p><b>Fait int\u00e9ressant :<\/b> La fus\u00e9e qui mettra Sentinel-3 en orbite est un missile balistique intercontinental SS-19 modifi\u00e9. Con\u00e7u \u00e0 l\u2019origine comme une arme de guerre, il a \u00e9t\u00e9 reconverti \u00e0 des fins pacifiques. Cela tombe \u00e0 point nomm\u00e9, compte tenu de la mission de Sentinel-3 : prot\u00e9ger la Terre !<\/p>","protected":false},"excerpt":{"rendered":"<p>On 16 February an ESA satellite called Sentinel-3 will blast up into orbit around Earth! Sentinel-3 is the latest in a fleet of advanced satellites whose mission is to study [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"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,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2016\/02\/mapping_growth\/17911417-2-eng-GB\/Mapping_growth.jpg","esa_banner_description":"Sentinel-3 will monitor Earth\u2019s oceans and create maps to show how healthy sea life is","esa_banner_credit":"ACRI-ST\/CNES\/ESA\/GeoEye\/NASA\/VITO","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/02\/Mapping_growth","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-508","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/508","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=508"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/508\/revisions"}],"predecessor-version":[{"id":4520,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/508\/revisions\/4520"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=508"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=508"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=508"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=508"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=508"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=508"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=508"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}