{"id":1071,"date":"2009-06-23T11:32:00","date_gmt":"2009-06-23T09:32:00","guid":{"rendered":"https:\/\/kids.esa.int\/herschel_opens_its_eyes_and_sees_a_whirlpool\/"},"modified":"2026-10-08T00:35:37","modified_gmt":"2026-10-07T22:35:37","slug":"herschel_opens_its_eyes_and_sees_a_whirlpool","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/herschel_opens_its_eyes_and_sees_a_whirlpool\/","title":{"rendered":"Herschel ouvre les \u2018 yeux \u2019 et aper\u00e7oit un tourbillon"},"content":{"rendered":"<div class=\"lede\">\n<p>Le plus puissant observatoire spatial infrarouge jamais construit a ouvert ses \u2018 yeux \u2019 \u00e9lectroniques pour la premi\u00e8re fois et a captur\u00e9 des images \u00e9poustouflantes d\u2019un syst\u00e8me stellaire en rotation. Le 14 juin, un mois apr\u00e8s son d\u00e9collage de Kourou, en Guyane fran\u00e7aise, le t\u00e9lescope Herschel de l\u2019ESA a retir\u00e9 son \u00ab cache-objectif \u00bb protecteur. Bien que les v\u00e9rifications soient encore en cours, l'\u00e9quipe de mission a d\u00e9cid\u00e9 d'avancer les premi\u00e8res observations de Herschel. Leur cible \u00e9tait l'un des plus beaux objets du ciel : M51, \u00e9galement connue sous le nom de \u00ab Galaxie du Tourbillon \u00bb.<\/p>\n<\/div>\n<p>L\u2019\u00ab aper\u00e7u \u00bb audacieux de Herschel r\u00e9alis\u00e9 d\u00e8s l\u2019ouverture du couvercle du t\u00e9lescope a d\u00e9pass\u00e9 toutes les attentes. Les images de test de la c\u00e9l\u00e8bre galaxie spirale ont \u00e9t\u00e9 r\u00e9alis\u00e9es en trois couleurs pour faire ressortir diff\u00e9rentes caract\u00e9ristiques. Elles se sont r\u00e9v\u00e9l\u00e9es les images les plus nettes jamais prises de la galaxie du Tourbillon dans l\u2019infrarouge et ont donn\u00e9 une preuve flagrante des performances superlatives de Herschel qui est, rappelons-le, le plus grand t\u00e9lescope spatial \u00e0 avoir jamais pris la voie des airs. Et cela n\u2019\u00e9tait qu\u2019un aper\u00e7u de ce qui nous attend.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1024\" data-credit=\"ESA and the PACS Consortium\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/06\/M51_Herschel_image_at_160_100_and_70_microns2\" 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\/2009\/06\/m51_herschel_image_at_160_100_and_70_microns2\/17868525-2-eng-GB\/M51_Herschel_image_at_160_100_and_70_microns.jpg\" alt=\"M51 Herschel image at 160, 100 and 70 microns\"><figcaption>Image de M51 prise par le t\u00e9lescope Herschel \u00e0 160, 100 et 70 microns<\/figcaption><\/figure>\n<p>D\u00e9couverte en 1773, la galaxie du Tourbillon est la premi\u00e8re galaxie spirale jamais observ\u00e9e. Avec ses longs bras et son noyau lumineux rempli d\u2019\u00e9toiles, cette superbe galaxie a une forme qui rappelle celle de notre Voie lact\u00e9e. Elle en est, par ailleurs, relativement proche puisqu\u2019elle se trouve \u00e0 quelques 35 millions d\u2019ann\u00e9es-lumi\u00e8re dans une petite constellation situ\u00e9e au nord que l\u2019on appelle Canes Venatici (les chiens de chasse).<\/p>\n<p>Au moment o\u00f9 les images ont \u00e9t\u00e9 prises, Herschel se trouvait \u00e0 quelques 1 425 000 km de la Terre, en route vers le point de l\u2019espace d\u2019o\u00f9 l\u2019observatoire fonctionnera pendant une dur\u00e9e d\u2019au moins trois ans. Ses instruments refroidis \u00e0 des temp\u00e9ratures extr\u00eames seront alors utilis\u00e9s pour regarder en arri\u00e8re vers le cr\u00e9puscule du temps.<\/p>","protected":false},"excerpt":{"rendered":"<p>The most powerful infrared space observatory ever built has opened its electronic eyes for the first time and captured some stunning views of a spinning star system. On 14 June, [&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\/2009\/06\/herschel_s_test_view_of_m513\/17893574-2-eng-GB\/Herschel_s_test_view_of_M51.jpg","esa_banner_description":"Herschel's test view of M51","esa_banner_credit":"ESA and the PACS Consortium","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/06\/Herschel_s_test_view_of_M513","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":[10,11,21],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1071","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-stars-and-galaxies"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1071","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=1071"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1071\/revisions"}],"predecessor-version":[{"id":4833,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1071\/revisions\/4833"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1071"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1071"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1071"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1071"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1071"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1071"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1071"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}