{"id":39128,"date":"2026-06-15T09:55:56","date_gmt":"2026-06-15T07:55:56","guid":{"rendered":"https:\/\/ggba.swiss\/esa-extends-the-cheops-space-telescope-mission-until-2029\/"},"modified":"2026-06-15T09:57:54","modified_gmt":"2026-06-15T07:57:54","slug":"lesa-prolonge-la-mission-du-telescope-spatial-cheops-jusquen-2029","status":"publish","type":"post","link":"https:\/\/ggba.swiss\/fr\/lesa-prolonge-la-mission-du-telescope-spatial-cheops-jusquen-2029\/","title":{"rendered":"L’ESA prolonge la mission du t\u00e9lescope spatial CHEOPS jusqu’en 2029"},"content":{"rendered":"\n

L’Agence spatiale europ\u00e9enne (ESA<\/a>) a d\u00e9cid\u00e9 de prolonger la mission du t\u00e9lescope spatial CHEOPS jusqu’\u00e0 fin 2029, au vu de ses remarquables performances scientifiques. CHEOPS est une mission conjointe de l’ESA et de la Suisse, conduite par l’Universit\u00e9 de Berne (UniBE<\/a>) en collaboration avec l’Universit\u00e9 de Gen\u00e8ve (UNIGE<\/a>), qui h\u00e9berge le centre des op\u00e9rations scientifiques de la mission au sein de son D\u00e9partement d’astronomie.<\/p>\n\n\n\n

Lanc\u00e9 en d\u00e9cembre 2019, CHEOPS<\/a> (CHaracterising ExOPlanets Satellite) mesure les variations de luminosit\u00e9 d’une \u00e9toile lorsqu’une plan\u00e8te passe devant elle, ce qui permet de d\u00e9terminer la taille et la densit\u00e9 des exoplan\u00e8tes. La mission avait \u00e9t\u00e9 prolong\u00e9e une premi\u00e8re fois en 2023, et le Comit\u00e9 des programmes scientifiques de l’ESA vient d’approuver une seconde prolongation jusqu’\u00e0 la fin de la d\u00e9cennie.<\/p>\n\n\n\n

Parmi ses d\u00e9couvertes, CHEOPS a contribu\u00e9 \u00e0 l’identification d’une plan\u00e8te en orbite autour de l’\u00e9toile LHS 1903 et a d\u00e9tect\u00e9, pour la premi\u00e8re fois, la d\u00e9formation d’une exoplan\u00e8te sous l’effet de fortes forces de mar\u00e9e, lui donnant une forme plus proche d’un ballon de rugby que d’une sph\u00e8re. Le t\u00e9lescope fonctionne \u00e9galement en tandem avec d’autres missions, dont le t\u00e9lescope spatial James Webb, en identifiant des cibles prometteuses et en caract\u00e9risant les exoplan\u00e8tes avant l’\u00e9tude d\u00e9taill\u00e9e de leur atmosph\u00e8re.<\/p>\n\n\n\n

Au cours des prochaines ann\u00e9es, CHEOPS poursuivra ses programmes d’observation \u00e0 long terme, examinera de nouveaux syst\u00e8mes plan\u00e9taires et testera des m\u00e9thodes d’observation innovantes, telles que la recherche d’exolunes et la d\u00e9termination plus pr\u00e9cise de la structure interne des plan\u00e8tes.<\/p>\n\n\n\n

Cette prolongation souligne le r\u00f4le de l’Universit\u00e9 de Gen\u00e8ve et de la Suisse occidentale dans la recherche sur les exoplan\u00e8tes, un domaine dans lequel la r\u00e9gion a b\u00e2ti une expertise profonde depuis la d\u00e9couverte de la premi\u00e8re exoplan\u00e8te orbitant autour d’une \u00e9toile semblable au Soleil par les astronomes genevois Michel Mayor et Didier Queloz en 1995, travaux r\u00e9compens\u00e9s par le prix Nobel de physique 2019.<\/p>\n","protected":false},"excerpt":{"rendered":"

Suite aux remarquables performances scientifiques du t\u00e9lescope spatial CHEOPS, l’Agence spatiale europ\u00e9enne prolonge sa mission jusqu’\u00e0 fin 2029, pla\u00e7ant son centre des op\u00e9rations scientifiques de l’Universit\u00e9 de Gen\u00e8ve au c\u0153ur de la recherche europ\u00e9enne sur les exoplan\u00e8tes.<\/p>\n","protected":false},"author":6,"featured_media":39125,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[845],"tags":[1155,1187,1162,1142,1189],"class_list":["post-39128","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","tag-advanced-manufacturing-fr-2","tag-aerospace-fr-2","tag-education-en-fr","tag-rd-fr-2","tag-space-fr-2"],"acf":[],"yoast_head":"\nL'ESA prolonge la mission du t\u00e9lescope CHEOPS jusqu'en 2029<\/title>\n<meta name=\"description\" content=\"L'ESA prolonge la mission du t\u00e9lescope CHEOPS jusqu'\u00e0 fin 2029. 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