{"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\/fi\/herschel_opens_its_eyes_and_sees_a_whirlpool\/","title":{"rendered":"Herschel avaa \u2018silm\u00e4ns\u00e4\u2019 ja n\u00e4kee py\u00f6rteen"},"content":{"rendered":"<div class=\"lede\">\n<p>Kaikkien aikojen tehokkain infrapuna-avaruusobservatorio on avannut elektroniset silm\u00e4ns\u00e4 ensimm\u00e4ist\u00e4 kertaa ja tallentanut upeita kuvia py\u00f6riv\u00e4st\u00e4 t\u00e4htij\u00e4rjestelm\u00e4st\u00e4. 14. kes\u00e4kuuta, kuukausi Kourousta, Ranskan Guayanasta tapahtuneen laukaisun j\u00e4lkeen, ESA:n Herschel-teleskooppi poisti suojaavan \u2018objektiivin suojuksen\u2019. Vaikka laitteen testaus oli viel\u00e4 kesken, missiotiimi p\u00e4\u00e4tti aikaistaa Herschelin ensimm\u00e4isi\u00e4 havaintoja. Kohteena oli yksi taivaan kauneimmista kohteista \u2013 M51, joka tunnetaan my\u00f6s nimell\u00e4 Py\u00f6rregalaksi.<\/p>\n<\/div>\n<p>Herschelin rohkea \u2018ennakkon\u00e4ytt\u00f6\u2019, joka tehtiin heti kaukoputken suojuksen avaamisen j\u00e4lkeen, ylitti kaikkien odotukset. Kuuluisasta spiraaligalaksista otetut testikuvat kuvattiin kolmella eri v\u00e4rill\u00e4, jotta eri piirteet tulisivat esiin. Ne osoittautuivat kaikkien aikojen ter\u00e4vimmiksi infrapunavalossa otetuiksi kuviksi Whirlpool-galaksista ja osoittivat selv\u00e4sti Herschelin, kaikkien aikojen suurimman avaruusteleskoopin, ylivoimaisen suorituskyvyn. Ja t\u00e4m\u00e4 oli vasta pieni esimakua siit\u00e4, mit\u00e4 on tulossa.<\/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>M51:n Herschel-kuva aallonpituuksilla 160, 100 ja 70 mikronia<\/figcaption><\/figure>\n<p>Vuonna 1773 l\u00f6ydetty Whirlpool-galaksi oli ensimm\u00e4inen galaksi, jolla havaittiin spiraalirakenne. Pitkill\u00e4, ulottuvilla k\u00e4sivarsillaan ja t\u00e4hdill\u00e4 t\u00e4ytetyll\u00e4 kirkkaalla ytimell\u00e4\u00e4n t\u00e4m\u00e4 kaunis galaksi muistuttaa muodoltaan omaa Linnunrataamme. Se on my\u00f6s melko l\u00e4heinen naapurimme, sill\u00e4 se sijaitsee noin 35 miljoonan valovuoden p\u00e4\u00e4ss\u00e4 pieness\u00e4 pohjoisessa t\u00e4hdist\u00f6ss\u00e4 nimelt\u00e4 Canes Venatici (Mets\u00e4styskoirat).<\/p>\n<p>Kuvien ottamishetkell\u00e4 Herschel oli 1 425 000 km:n p\u00e4\u00e4ss\u00e4 Maasta ja kiihdytti kohti sit\u00e4 avaruuden kohtaa, jossa se tulee toimimaan v\u00e4hint\u00e4\u00e4n kolmen vuoden ajan. Sen alij\u00e4\u00e4hdytettyj\u00e4 mittalaitteita k\u00e4ytet\u00e4\u00e4n sitten katsomaan taaksep\u00e4in aikojen alkuun.<\/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\/fi\/wp-json\/wp\/v2\/posts\/1071","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=1071"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1071\/revisions"}],"predecessor-version":[{"id":4833,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1071\/revisions\/4833"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1071"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1071"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1071"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1071"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1071"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1071"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1071"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1071"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1071"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1071"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}