{"id":1717,"date":"2026-08-06T16:51:50","date_gmt":"2026-08-06T14:51:50","guid":{"rendered":"https:\/\/www-new.ias.u-psud.fr\/?p=1717"},"modified":"2026-09-11T17:27:56","modified_gmt":"2026-09-11T15:27:56","slug":"euclid","status":"publish","type":"post","link":"https:\/\/www.ias.u-psud.fr\/index.php\/2026\/08\/06\/euclid\/","title":{"rendered":"Euclid"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1717\" class=\"elementor elementor-1717\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-365d0f3 e-flex e-con-boxed e-con e-parent\" data-id=\"365d0f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-84ab3f5 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"84ab3f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"655\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/202112-euclid-fig5-1024x655.jpg\" class=\"attachment-large size-large wp-image-1722\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/202112-euclid-fig5-1024x655.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/202112-euclid-fig5-300x192.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/202112-euclid-fig5-768x491.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/202112-euclid-fig5.jpg 1109w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f4f600f e-flex e-con-boxed e-con e-parent\" data-id=\"f4f600f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-63f7b05 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"63f7b05\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Euclid<\/h1>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9b7c05e e-con e-atomic-element e-flexbox-base e-9b7c05e-607ee4c \" data-id=\"9b7c05e\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"9b7c05e\">\n    \t\t<div class=\"elementor-element elementor-element-d72e17c elementor-widget elementor-widget-text-editor\" data-id=\"d72e17c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Euclid est une mission spatiale de l\u2019<strong>Agence Spatiale Europ\u00e9enne (ESA)<\/strong>, s\u00e9lectionn\u00e9e dans le cadre du programme <em>Cosmic Vision<\/em> (mission M2). Son objectif scientifique est de cartographier l\u2019Univers pour \u00e9lucider la cause de l\u2019acc\u00e9l\u00e9ration de son expansion, en observant jusqu\u2019\u00e0 10 milliards d\u2019ann\u00e9es dans le pass\u00e9. La mission vise \u00e0 comprendre la nature de l\u2019<strong>\u00e9nergie sombre<\/strong>, de la <strong>mati\u00e8re noire<\/strong> et de la gravitation, en mesurant avec une grande pr\u00e9cision la forme et la distribution des galaxies. Elle s\u2019appuie sur deux instruments :<\/p><ul><li><strong>VIS<\/strong> (<em>Visible Instrument<\/em>, responsabilit\u00e9 MSSL, Royaume-Uni)<\/li><li><strong>NISP<\/strong> (<em>Near InfraRed Spectrometer and Photometer<\/em>, responsabilit\u00e9 LAM, France).<br \/>Le lancement a eu lieu le <strong>1er juillet 2023<\/strong> depuis Cap Canaveral \u00e0 bord d\u2019une fus\u00e9e Falcon 9 de SpaceX. La mission nominale durera <strong>6 ans<\/strong>, avec une phase de v\u00e9rification de 3 mois apr\u00e8s le lancement. Les premi\u00e8res images scientifiques ont \u00e9t\u00e9 publi\u00e9es en <strong>novembre 2023<\/strong>, et les premiers morceaux de relev\u00e9 du ciel ont \u00e9t\u00e9 livr\u00e9s en <strong>mars 2025<\/strong>.<\/li><\/ul><p>La mission \u00e9tudiera la relation entre distance et d\u00e9calage spectral vers le rouge (<em>redshift<\/em>), ainsi que l&rsquo;\u00e9volution des structures cosmiques par la mesure des formes et des redshifts <em>z<\/em> des galaxies et des amas de galaxies jusqu&rsquo;\u00e0 <em>z<\/em> ~ 2 (ou de mani\u00e8re \u00e9quivalente \u00e0 un temps de retour en arri\u00e8re de 10 milliards d&rsquo;ann\u00e9es). De cette fa\u00e7on, les observations d&rsquo;Euclid couvriront l&rsquo;ensemble de la p\u00e9riode pendant laquelle l&rsquo;\u00e9nergie sombre a jou\u00e9 un r\u00f4le important dans l&rsquo;acc\u00e9l\u00e9ration de l&rsquo;expansion de l&rsquo;Univers.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5612ae1 e-flex e-con-boxed e-con e-parent\" data-id=\"5612ae1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4211889 elementor-widget elementor-widget-heading\" data-id=\"4211889\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le r\u00f4le de l'IAS<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d2c731 e-con e-atomic-element e-flexbox-base e-8d2c731-bc6f834 \" data-id=\"8d2c731\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"8d2c731\">\n    \t\t<div class=\"elementor-element elementor-element-10d0162 elementor-widget elementor-widget-text-editor\" data-id=\"10d0162\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>L\u2019IAS a <strong>con\u00e7u, r\u00e9alis\u00e9 et test\u00e9<\/strong> la <em>Calibration Unit<\/em> (CU) de l\u2019instrument VIS. Ce syst\u00e8me de calibration en vol fournit un faisceau lumineux tr\u00e8s uniforme couvrant le plan focal, permettant la r\u00e9alisation de champs plats pendant toute la dur\u00e9e de la mission.<\/p><p>La CU est compos\u00e9e d\u2019une sph\u00e8re int\u00e9grante \u00e9clair\u00e9e par 6 LEDs couvrant une gamme spectrale de <strong>590 \u00e0 885 nm<\/strong>.<\/p><p>L\u2019IAS contribue \u00e9galement au <strong>segment sol scientifique (SGS)<\/strong>, notamment \u00e0 l\u2019unit\u00e9 de fusion des donn\u00e9es des diff\u00e9rents instruments (<em>OU-MER<\/em>), ainsi qu\u2019aux <em>Science Working Groups<\/em> (SWG).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a181800 e-con e-atomic-element e-flexbox-base e-a181800-926350d \" data-id=\"a181800\" data-element_type=\"e-flexbox\" data-e-type=\"e-flexbox\" data-interaction-id=\"a181800\">\n    \t\t<div class=\"elementor-element elementor-element-bc4a91b elementor-widget elementor-widget-n-accordion\" data-id=\"bc4a91b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;multiple&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1970\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1970\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Statut <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1970\" class=\"elementor-element elementor-element-ffd0654 e-con-full e-flex e-con e-child\" data-id=\"ffd0654\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1e246f0 elementor-widget elementor-widget-text-editor\" data-id=\"1e246f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En op\u00e9ration<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1971\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1971\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Partenaires (acad\u00e9miques \/ industriels) <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1971\" class=\"elementor-element elementor-element-9ddd6cc e-con-full e-flex e-con e-child\" data-id=\"9ddd6cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e495a6a elementor-widget elementor-widget-image\" data-id=\"e495a6a\" data-element_type=\"widget\" data-e-type=\"widget\" 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1200w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/thales-alenia-space_logo-3702255570-300x157.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/thales-alenia-space_logo-3702255570-1024x535.jpg 1024w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/thales-alenia-space_logo-3702255570-768x401.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1972\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1972\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Financeurs <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1972\" class=\"elementor-element elementor-element-977f54e e-con-full e-flex e-con e-child\" data-id=\"977f54e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ae3b694 elementor-widget elementor-widget-image\" data-id=\"ae3b694\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/cnes.fr\/\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"648\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/Logo_CNES_2017_triangulaire_bleu-768x648.png\" class=\"attachment-medium_large size-medium_large wp-image-583\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/Logo_CNES_2017_triangulaire_bleu-768x648.png 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/Logo_CNES_2017_triangulaire_bleu-300x253.png 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/07\/Logo_CNES_2017_triangulaire_bleu.png 926w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5833fc8 elementor-widget elementor-widget-image\" data-id=\"5833fc8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.cnrs.fr\/fr\" target=\"_blank\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/06\/CNRS-150px.png\" class=\"attachment-medium_large size-medium_large wp-image-139\" alt=\"\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e8bf22 elementor-widget elementor-widget-image\" data-id=\"3e8bf22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.universite-paris-saclay.fr\/\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"576\" src=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/paris-saclay-university1609-4027411637-768x576.jpg\" class=\"attachment-medium_large size-medium_large wp-image-1737\" alt=\"\" srcset=\"https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/paris-saclay-university1609-4027411637-768x576.jpg 768w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/paris-saclay-university1609-4027411637-300x225.jpg 300w, https:\/\/www.ias.u-psud.fr\/wp-content\/uploads\/2026\/08\/paris-saclay-university1609-4027411637.jpg 866w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1973\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1973\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Dates cl\u00e9s (pr\u00e9v.) <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1973\" class=\"elementor-element elementor-element-ae94f78 e-flex e-con-boxed e-con e-child\" data-id=\"ae94f78\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8a27ed9 elementor-widget elementor-widget-text-editor\" data-id=\"8a27ed9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Mars 2019 : Livraison du mod\u00e8le de vol de la CU<\/li><li>2022 : Int\u00e9gration et tests du satellite<\/li><li>1er juillet 2023 : Lancement<\/li><li>Juillet-octobre 2023 : Phase de v\u00e9rification<\/li><li>Novembre 2023 : Premi\u00e8res images scientifiques<\/li><li>Mars 2025 : Livraison des premiers morceaux de relev\u00e9 du ciel<\/li><li>2029 : Fin de la mission nominale<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1974\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1974\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> \u00c9tapes cl\u00e9s <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-up\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M8 256C8 119 119 8 256 8s248 111 248 248-111 248-248 248S8 393 8 256zm292 116V256h70.9c10.7 0 16.1-13 8.5-20.5L264.5 121.2c-4.7-4.7-12.2-4.7-16.9 0l-115 114.3c-7.6 7.6-2.2 20.5 8.5 20.5H212v116c0 6.6 5.4 12 12 12h64c6.6 0 12-5.4 12-12z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 137-111 248-248 248S8 393 8 256 119 8 256 8s248 111 248 248zM212 140v116h-70.9c-10.7 0-16.1 13-8.5 20.5l114.9 114.3c4.7 4.7 12.2 4.7 16.9 0l114.9-114.3c7.6-7.6 2.2-20.5-8.5-20.5H300V140c0-6.6-5.4-12-12-12h-64c-6.6 0-12 5.4-12 12z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1974\" class=\"elementor-element elementor-element-4f265e0 e-flex e-con-boxed e-con e-child\" data-id=\"4f265e0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c404145 elementor-widget elementor-widget-text-editor\" data-id=\"c404145\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"select-none\"><div class=\"markdown-container-style max-w-none gap-1 overflow-x-visible py-0 pb-0 font-normal text-wrap break-words select-text\" dir=\"auto\" data-message-part-type=\"answer\" data-testid=\"text-message-part\"><ul><li>Conception, r\u00e9alisation et tests de la <em>Calibration Unit<\/em> (CU) pour l\u2019instrument VIS<\/li><li>Livraison et int\u00e9gration de la CU dans l\u2019instrument VIS<\/li><li>Tests environnementaux et de performance du <em>Payload Module<\/em> (PLM)<\/li><li>Lancement et mise en orbite vers le point L2<\/li><li>Phase de v\u00e9rification des instruments (3 mois)<\/li><li>D\u00e9but des observations scientifiques nominales<\/li><li>Livraison des premiers relev\u00e9s du ciel<\/li><\/ul><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1e69ba7 elementor-widget elementor-widget-menu-anchor\" data-id=\"1e69ba7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"en-savoir-plus\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-element elementor-element-72b19574 e-con-full e-flex e-con e-parent\" data-id=\"72b19574\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-53a7b892 e-con-full e-flex e-con e-child\" data-id=\"53a7b892\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-13a0d604 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"13a0d604\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Contacts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3108905 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"3108905\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9f\u00e9rents (scientifiques et techniques) <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c63b2a5 elementor-widget elementor-widget-text-editor\" data-id=\"1c63b2a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><a href=\"https:\/\/www.ias.u-psud.fr\/pperso\/naghanim\/\">Nabila Aghanim<\/a>, Directrice de recherche, \u00c9quipe Cosmologie<\/li><li><a href=\"https:\/\/www.ias.u-psud.fr\/annuaire?nom=philippon\">Anne Philippon<\/a>, Directrice technique de l&rsquo;IAS, \u00c9quipe Optique<\/li><li><a href=\"https:\/\/www.ias.universite-paris-saclay.fr\/annuaire?nom=dole\">Herv\u00e9 Dole<\/a>, Professeur, \u00c9quipe Cosmologie<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d76bedb elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"d76bedb\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00c9quipe de travail <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62caa83 elementor-widget elementor-widget-text-editor\" data-id=\"62caa83\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Julien Grain, Charg\u00e9 de recherche, \u00c9quipe Cosmologie<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fadb250 e-con-full e-flex e-con e-child\" data-id=\"fadb250\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5640f83 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5640f83\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pour aller plus loin :<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f6323b3 elementor-widget elementor-widget-text-editor\" data-id=\"f6323b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><a href=\"https:\/\/www.esa.int\/Science_Exploration\/Space_Science\/Euclid\" target=\"_blank\" rel=\"nofollow noopener noreferrer external\">ESA Euclid<\/a><\/li><li><a href=\"https:\/\/euclid.cnes.fr\/fr\/EUCLID\/Fr\/GP_mission.htm\" target=\"_blank\" rel=\"nofollow noopener noreferrer external\">CNES Euclid<\/a><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/livraison-du-modele-de-vol-de-la-calibration-unit-de-linstrument-vis-de-la-mission-euclid\/\" target=\"_blank\" rel=\"noopener\">Livraison du mod\u00e8le de vol de la Calibration Unit de l\u2019instrument VIS de la mission Euclid<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/euclid-la-collaboration-francaise-se-reunit-a-orsay-3-ans-avant-le-lancement\/\" target=\"_blank\" rel=\"noopener\">Euclid : la collaboration fran\u00e7aise se r\u00e9unit \u00e0 Orsay, 3 ans avant le lancement<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/la-calibration-unit-de-linstrument-euclid-vis-a-ete-livree-pour-integration-sur-le-satellite\/\" target=\"_blank\" rel=\"noopener\">La Calibration Unit de l\u2019instrument Euclid\/VIS a \u00e9t\u00e9 livr\u00e9e pour int\u00e9gration sur le satellite<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/euclid-en-route-pour-l2\/\" target=\"_blank\" rel=\"noopener\">Euclid en route pour L2<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/premiere-lumiere-deuclid\/\" target=\"_blank\" rel=\"noopener\">Premi\u00e8re lumi\u00e8re d\u2019Euclid !<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/euclid-premieres-images-scientifiques\/\" target=\"_blank\" rel=\"noopener\">Euclid : Premi\u00e8res images scientifiques<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/euclid-devoile-ses-premiers-resultats-scientifiques\/\" target=\"_blank\" rel=\"noopener\">Euclid d\u00e9voile ses premiers r\u00e9sultats scientifiques<\/a><\/p><\/li><li><p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/www-new.ias.u-psud.fr\/index.php\/2026\/08\/06\/euclid-livre-ses-premiers-morceaux-de-releve-du-ciel\/\" target=\"_blank\" rel=\"noopener\">Euclid livre ses premiers morceaux de relev\u00e9 du ciel<\/a><\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Euclid est une mission spatiale de l\u2019Agence Spatiale Europ\u00e9enne (ESA), s\u00e9lectionn\u00e9e dans le cadre du programme Cosmic Vision (mission 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