{"id":516,"date":"2015-12-03T09:32:00","date_gmt":"2015-12-03T08:32:00","guid":{"rendered":"https:\/\/kids.esa.int\/lisa_pathfinder_mission_launched\/"},"modified":"2026-10-08T00:29:07","modified_gmt":"2026-10-07T22:29:07","slug":"lisa_pathfinder_mission_launched","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/lisa_pathfinder_mission_launched\/","title":{"rendered":"La mission LISA Pathfinder a \u00e9t\u00e9 lanc\u00e9e !"},"content":{"rendered":"<div class=\"lede\">\n<p>LISA Pathfinder, la nouvelle mission de haute technologie de l\u2019ESA, a \u00e9t\u00e9 lanc\u00e9e aujourd\u2019hui depuis le port spatial de l\u2019Europe \u00e0 Kourou, en Guyane fran\u00e7aise. Apr\u00e8s avoir d\u00e9coll\u00e9 avec succ\u00e8s gr\u00e2ce \u00e0 un puissant lanceur Vega, la mission LISA Pathfinder part sur d\u2019excellentes bases !<\/p>\n<\/div>\n<p>LISA Pathfinder va enqu\u00eater sur la force qui nous emp\u00eache de flotter dans l\u2019espace : la gravit\u00e9. Il y a tr\u00e8s exactement 100 ans, le c\u00e9l\u00e8bre chercheur Albert Einstein a publi\u00e9 sa th\u00e9orie de la relativit\u00e9 g\u00e9n\u00e9rale, qui reste \u00e0 ce jour notre meilleure tentative de comprendre la fa\u00e7on dont la gravit\u00e9 fonctionne. La mission LISA Pathfinder va tester cette th\u00e9orie gr\u00e2ce \u00e0 des instruments incroyablement pr\u00e9cis capables de d\u00e9tecter les plus infimes anomalies de l\u2019espace.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1280\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2015\/12\/Artist_impression_of_LISA_Pathfinder\" 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\/2015\/12\/artist_impression_of_lisa_pathfinder\/17880328-2-eng-GB\/Artist_impression_of_LISA_Pathfinder.jpg\" alt=\"\"><\/figure>\n<p>LISA Pathfinder embarque une paire de cubes identiques en or-platine. Ils flotteront librement \u00e0 bord du v\u00e9hicule spatial, sans jamais le toucher. Un syst\u00e8me de lasers rebondissant d\u2019un cube \u00e0 l\u2019autre permettra de mesurer leurs positions exactes avec une pr\u00e9cision d\u2019un milliardi\u00e8me de millim\u00e8tre ! Les scientifiques pourront ainsi analyser la fa\u00e7on dont la gravit\u00e9 s\u2019exerce sur les cubes.<\/p>\n<p>M\u00eame si la mission LISA Pathfinder a d\u00e9sormais \u00e9t\u00e9 lanc\u00e9e, il lui faudra encore 10 semaines pour atteindre sa destination. Apr\u00e8s quelques v\u00e9rifications finales, elle entamera alors une p\u00e9riode de six mois d\u2019observations scientifiques d\u2019une pr\u00e9cision extraordinaire qui pourraient changer notre compr\u00e9hension de la gravit\u00e9.<\/p>\n<p>Les \u00e9quipes de l\u2019ESA anticipent l\u2019avenir et pr\u00e9voient d\u00e9j\u00e0 une mission de suivi, baptis\u00e9e eLISA, dont le lancement aurait lieu en l\u2019an 2034. La mission LISA Pathfinder trouvera alors son prolongement, qui nous aidera \u00e0 percer comme jamais les secrets de la gravit\u00e9.<\/p>\n<p><b>Fait int\u00e9ressant :<\/b> LISA Pathfinder est \u00e9quip\u00e9 de minuscules propulseurs capables de se d\u00e9clencher 10 fois par seconde pour emp\u00eacher le vaisseau spatial d'entrer en contact avec les cubes d'or et de platine.<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA\u2019s high-tech LISA Pathfinder mission lifted off earlier today from Europe\u2019s spaceport in Kourou, French Guiana. Using a powerful Vega rocket to blast LISA Pathfinder into space, the mission has [&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\/2015\/12\/liftoff_of_vega_carrying_lisa_pathfinder\/17885730-2-eng-GB\/Liftoff_of_Vega_carrying_LISA_Pathfinder.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2015\/12\/Liftoff_of_Vega_carrying_LISA_Pathfinder","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-516","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\/516","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=516"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/516\/revisions"}],"predecessor-version":[{"id":4524,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/516\/revisions\/4524"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=516"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=516"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=516"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=516"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=516"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=516"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=516"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}