{"id":916,"date":"2007-01-11T09:35:00","date_gmt":"2007-01-11T08:35:00","guid":{"rendered":"https:\/\/kids.esa.int\/corot-_europe_s_planet-seeker\/"},"modified":"2026-10-08T00:33:44","modified_gmt":"2026-10-07T22:33:44","slug":"corot-_europe_s_planet-seeker","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/corot-_europe_s_planet-seeker\/","title":{"rendered":"D\u00e9but prometteur pour le d\u00e9nicheur de plan\u00e8tes europ\u00e9en"},"content":{"rendered":"<div class=\"lede\">\n<p>La traque aux plan\u00e8tes au-del\u00e0 de notre syst\u00e8me solaire a pris une nouvelle tournure le 27 d\u00e9cembre 2006 avec le lancement du satellite europ\u00e9en COROT. Port\u00e9 sur orbite par une nouvelle version du lanceur Soyouz, COROT a d\u00e9coll\u00e9 du cosmodrome de Ba\u00efkonour au Kazakhstan \u00e0 15h23 (heure d'Europe centrale). Cinquante minutes plus tard, le satellite de 630 kg \u00e9tait plac\u00e9 en parfaite orbite polaire, \u00e0 900 km d'altitude.<\/p>\n<\/div>\n<p>Au cours des prochaines ann\u00e9es, le t\u00e9lescope de 30 cm et la cam\u00e9ra ultra sensible de COROT permettront d'\u00e9tudier la sismologie stellaire et de partir \u00e0 la recherche de nouveaux mondes. Le satellite va pour cela recueillir la faible lumi\u00e8re \u00e9mise par 120 000 \u00e9toiles et l'envoyer \u00e0 une cam\u00e9ra sp\u00e9ciale en deux parties.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"537\" data-credit=\"CNES\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/11\/Planet_transit_in_front_of_a_star2\" 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\/2006\/11\/planet_transit_in_front_of_a_star2\/17867526-3-eng-GB\/Planet_transit_in_front_of_a_star.jpg\" alt=\"Planet transit in front of a star\"><figcaption>Passage d'une plan\u00e8te devant une \u00e9toile<\/figcaption><\/figure>\n<p>La moiti\u00e9 de la cam\u00e9ra est con\u00e7ue pour d\u00e9couvrir des plan\u00e8tes lointaines. Pour ce faire, elle enregistre les infimes baisses de luminosit\u00e9 d\u2019une \u00e9toile lorsqu\u2019une plan\u00e8te passe devant elle. Bon nombre des objets d\u00e9couverts par COROT sont des \u2018 Jupiter chauds \u2019, c\u2019est-\u00e0-dire des plan\u00e8tes g\u00e9antes tr\u00e8s proches de leur \u00e9toile. Cependant, il a \u00e9galement d\u00e9tect\u00e9 un petit nombre de \u2018 super-Terres \u2019. Ces mondes rocheux ne sont que quelques fois plus grands que la Terre. COROT-7b \u2013 dont le diam\u00e8tre est inf\u00e9rieur \u00e0 deux fois celui de la Terre \u2013 \u00e9tait la plus petite exoplan\u00e8te jamais d\u00e9couverte.<\/p>\n<p>L'autre partie de la cam\u00e9ra est capable de d\u00e9tecter les plus petites variations de lumi\u00e8re des \u00e9toiles g\u00e9n\u00e9r\u00e9es par les ondes acoustiques ondulant sur la surface. Elles sont semblables aux ondes s\u00e9ismiques sur Terre et permettront aux scientifiques de sonder l'int\u00e9rieur de chaque \u00e9toile. Des \u00e9tudes similaires du Soleil ont d\u00e9j\u00e0 \u00e9t\u00e9 effectu\u00e9es avec le satellite SOHO de l'ESA.<\/p>","protected":false},"excerpt":{"rendered":"<p>The search for planets far beyond our Solar System entered a new era on 27 December 2006 with the launch of Europe\u2019s COROT spacecraft. Carried into orbit by a new [&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\/2006\/11\/artist_s_impression_of_corot3\/17888727-2-eng-GB\/Artist_s_impression_of_COROT.jpg","esa_banner_description":"","esa_banner_credit":"CNES - D. 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