{"id":1038,"date":"2010-05-12T08:05:00","date_gmt":"2010-05-12T06:05:00","guid":{"rendered":"https:\/\/kids.esa.int\/herschel_highlights_hidden_stars\/"},"modified":"2026-10-08T00:35:11","modified_gmt":"2026-10-07T22:35:11","slug":"herschel_highlights_hidden_stars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/herschel_highlights_hidden_stars\/","title":{"rendered":"Herschel tuo esiin piilossa olevat t\u00e4hdet"},"content":{"rendered":"<div class=\"lede\">\n<p>Vuosi sitten ESA:n Herschel-avaruusobservatorio laukaistiin tutkimaan infrapuna-universumia. Herschel kiert\u00e4\u00e4 nyt turvallisesti maata noin 1,5 miljoonan kilometrin et\u00e4isyydell\u00e4 ja on alkanut paljastaa aiemmin piilossa olleita yksityiskohtia t\u00e4htien muodostumisesta. Uudet kuvat esitt\u00e4v\u00e4t tuhansia kaukaisia galakseja, joissa t\u00e4hdet syntyv\u00e4t kiivaasti, sek\u00e4 kauniita, t\u00e4hti\u00e4 muodostavia pilvi\u00e4, jotka ovat hajallaan Linnunradan eri puolilla.<\/p>\n<\/div>\n<p>Herschel on suurin avaruuteen koskaan l\u00e4hetetty t\u00e4htitieteellinen observatorio, jonka p\u00e4\u00e4peili on nelj\u00e4 kertaa leve\u00e4mpi kuin miss\u00e4\u00e4n aiemmassa infrapuna-avaruusteleskoopissa. T\u00e4m\u00e4n ansiosta se pystyy tutkimaan galaksimme kylmi\u00e4, t\u00e4hti\u00e4 muodostavia pilvi\u00e4 tarkemmin kuin koskaan aiemmin. Yhdess\u00e4 n\u00e4ist\u00e4 alueista, joka tunnetaan nimell\u00e4 RCW 120, sijaitsee vastasyntynyt t\u00e4hti, josta n\u00e4ytt\u00e4\u00e4 tulevan superj\u00e4ttil\u00e4inen seuraavien muutaman sadan tuhannen vuoden kuluessa.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"2545\" data-credit=\"ESA\/Hi-GAL Consortium\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/05\/Stellar_pregnancy_and_birth_in_the_Milky_Way2\" 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\/2010\/05\/stellar_pregnancy_and_birth_in_the_milky_way2\/17885989-2-eng-GB\/Stellar_pregnancy_and_birth_in_the_Milky_Way.jpg\" alt=\"Stellar pregnancy and birth in the Milky Way\"><\/figure>\n<p>T\u00e4m\u00e4 vastasyntynyt t\u00e4hti, joka on jo 8\u201310 kertaa Aurinkoa painavampi, on ymp\u00e4r\u00f6ity valtavalla kaasu- ja p\u00f6lypilvell\u00e4, josta se voi ammentaa ravintoa ja kasvaa. Tutkijat eiv\u00e4t viel\u00e4 ymm\u00e4rr\u00e4, miten t\u00e4hdet paisuvat 150 aurinkomassan kokoisiksi, joten RCW 120:t\u00e4 seurataan tarkasti, jotta voidaan selvitt\u00e4\u00e4, miten t\u00e4llaiset superj\u00e4ttil\u00e4iset muodostuvat.<\/p>\n<p>Toinen uusi Herschel-kuva osoittaa, kuinka Linnunradan aine kokoontuu t\u00e4htien muodostumiseksi. \u2018Siemenet\u2019 ilmestyv\u00e4t ensin hehkuvan p\u00f6lyn ja kaasun virtausten sis\u00e4ll\u00e4 muodostaen kymmeni\u00e4 valovuosia pitki\u00e4 t\u00e4htien syntypaikkojen ketjuja. Linnunradan ulkopuolella Herschel on mitannut infrapunas\u00e4teily\u00e4 tuhansista muista galakseista, jotka sijaitsevat miljardien valovuosien et\u00e4isyydell\u00e4.<\/p>\n<p>Tutkimalla n\u00e4iden valopisteiden kirkkautta on k\u00e4ynyt ilmi, ett\u00e4 t\u00e4hdet muodostuivat aiemmin 10\u201315 kertaa nopeammin kuin nyky\u00e4\u00e4n. Herschel on my\u00f6s havainnut ainetta, jota ei esiinny luonnossa Maassa \u2013 vesimolekyylej\u00e4, jotka voimakas s\u00e4teily on hajottanut ja joille on muodostunut s\u00e4hk\u00f6varaus.<\/p>","protected":false},"excerpt":{"rendered":"<p>One year ago, ESA\u2019s Herschel space observatory was launched on a mission to explore the infrared Universe. Now safely orbiting about 1.5 million km from Earth, Herschel is beginning to [&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\/2010\/05\/the_galactic_bubble_rcw_1202\/17893944-2-eng-GB\/The_Galactic_bubble_RCW_120.jpg","esa_banner_description":"","esa_banner_credit":"ESA\/PACS\/SPIRE\/HOBYS Consortia","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/05\/The_Galactic_bubble_RCW_1202","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-1038","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\/1038","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=1038"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1038\/revisions"}],"predecessor-version":[{"id":4811,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1038\/revisions\/4811"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1038"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1038"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1038"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1038"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1038"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1038"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1038"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}