{"id":441,"date":"2017-04-28T07:51:00","date_gmt":"2017-04-28T05:51:00","guid":{"rendered":"https:\/\/kids.esa.int\/countdown_to_cassini_s_grand_finale\/"},"modified":"2026-10-08T00:28:15","modified_gmt":"2026-10-07T22:28:15","slug":"countdown_to_cassini_s_grand_finale","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/countdown_to_cassini_s_grand_finale\/","title":{"rendered":"Laskenta Cassinin suuren finaalin alkuun"},"content":{"rendered":"<div class=\"lede\">\n<p>Vietetty\u00e4\u00e4n l\u00e4hes 13 vuotta Saturnuksen kiertoradalla Cassini\u2013Huygens-luotainmissio p\u00e4\u00e4ttyy pian! Luotain suorittaa parhaillaan sarjaa rohkeita sukelluksia planeetan ja sen renkaiden v\u00e4liss\u00e4, ennen kuin se sy\u00f6ksyy Saturnuksen ilmakeh\u00e4\u00e4n \u2013 ja tuhoutuu! \u2013 15. syyskuuta.<\/p>\n<\/div>\n<figure class=\"wp-block-image size-large\" data-width=\"1489\" data-credit=\"ESA-D. DUCROS\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/04\/Cassini_sent_the_Huygens_probe_to_land_on_Saturn_s_moon_Titan\" 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\/2017\/04\/cassini_sent_the_huygens_probe_to_land_on_saturn_s_moon_titan\/17909382-2-eng-GB\/Cassini_sent_the_Huygens_probe_to_land_on_Saturn_s_moon_Titan.jpg\" alt=\"Cassini sent the Huygens probe to land on Saturn\u2019s moon Titan\"><figcaption>Cassini l\u00e4hetti Huygens-luotaimen laskeutumaan Saturnuksen kuuhun Titaniin<\/figcaption><\/figure>\n<p>Cassini-Huygens-luotainlaukaisu tapahtui Maasta vuonna 1997. Sen j\u00e4lkeen se matkusti seitsem\u00e4n vuotta aurinkokunnan halki ennen saapumistaan Saturnukseen. Muutama kuukausi my\u00f6hemmin Cassini-\u201cem\u00e4alus\u201d laukaisi ESA:n Huygens-luotaimen, joka laskeutui Saturnuksen salaper\u00e4iselle kuulle Titanille \u2013 se oli kaikkien aikojen ensimm\u00e4inen laskeutuminen aurinkokunnan ulko-osissa! Huygens paljasti, ett\u00e4 Titanilla on s\u00e4\u00e4ilmi\u00f6it\u00e4, pintal\u00e4mp\u00f6tila on \u2013180 \u00b0C ja j\u00e4rvet ovat t\u00e4ynn\u00e4 metaania. Se on todellakin hyvin outo paikka!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1580\" data-credit=\"NASA\/JPL\/Space Science\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/04\/Cassini_photographed_jets_of_water_blasting_out_from_the_icy_moon_Enceladus\" 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\/2017\/04\/cassini_photographed_jets_of_water_blasting_out_from_the_icy_moon_enceladus\/17910640-2-eng-GB\/Cassini_photographed_jets_of_water_blasting_out_from_the_icy_moon_Enceladus.jpg\" alt=\"Cassini photographed jets of water blasting out from the icy moon Enceladus\"><figcaption>Cassini kuvasi vesipurskeita, jotka sy\u00f6ksyiv\u00e4t ulos j\u00e4isest\u00e4 Enceladus-kuusta<\/figcaption><\/figure>\n<p>Cassini-luotain j\u00e4tti sitten Huygensin Titanille ja jatkoi Saturnuksen, sen renkaiden ja kuiden tutkimista. Cassini havaitsi vesih\u00f6yry\u00e4, jota suihkusi avaruuteen toiselta kuulta, j\u00e4iselt\u00e4 Enceladukselta. T\u00e4m\u00e4 on todiste nestem\u00e4isen veden merest\u00e4 kuun j\u00e4\u00e4tyneen pinnan alla. Cassini l\u00f6ysi vedest\u00e4 jopa vetykaasua, mik\u00e4 on merkki siit\u00e4, ett\u00e4 t\u00e4ss\u00e4 piilotetussa meress\u00e4 voisi olla kemiallista energiaa \u2013 mahdollinen ravintol\u00e4hde yksinkertaisille el\u00e4m\u00e4nmuodoille!<\/p>\n<p>Cassinin polttoaine on nyt loppumassa, joten tutkimusmatkan tutkijat ovat p\u00e4\u00e4tt\u00e4neet p\u00e4\u00e4tt\u00e4\u00e4 luotaimen matkan upottamalla sen Saturnuksen ilmakeh\u00e4\u00e4n. N\u00e4in v\u00e4ltet\u00e4\u00e4n se, ett\u00e4 se t\u00f6rm\u00e4isi vahingossa johonkin Saturnuksen kuista, ja kuut s\u00e4ilyv\u00e4t koskemattomina tulevia tutkimuksia varten.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1600\" data-credit=\"NASA\/JPL-Caltech\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/04\/On_15_September_2017_Cassini_will_plunge_into_the_atmosphere_of_Saturn\" 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\/2017\/04\/on_15_september_2017_cassini_will_plunge_into_the_atmosphere_of_saturn\/18249362-2-eng-GB\/On_15_September_2017_Cassini_will_plunge_into_the_atmosphere_of_Saturn.jpg\" alt=\"On 15 September 2017, Cassini will plunge into the atmosphere of Saturn\"><figcaption>15. syyskuuta 2017 Cassini sy\u00f6ksyy Saturnuksen ilmakeh\u00e4\u00e4n<\/figcaption><\/figure>\n<p>Ennen tuhoutumistaan Cassini viett\u00e4\u00e4 viimeiset kuukautensa lent\u00e4m\u00e4ll\u00e4 Saturnuksen ja sen renkaiden v\u00e4lisell\u00e4 alueella. T\u00e4t\u00e4 aluetta ei ole koskaan aiemmin tutkittu! Cassini ottaa kaikkien aikojen ter\u00e4vimm\u00e4t kuvat Saturnuksen sis\u00e4renkaista ja planeetan pilvist\u00e4. Se mittaa my\u00f6s Saturnuksen painovoimakentt\u00e4\u00e4, mik\u00e4 auttaa tutkijoita selvitt\u00e4m\u00e4\u00e4n, millainen planeetan sisus on. Joten viel\u00e4 nytkin Cassini-luotain auttaa tekem\u00e4\u00e4n uusia l\u00f6yt\u00f6j\u00e4!<\/p>\n<p><b>Mielenkiintoinen fakta:<\/b> Cassini aikoo tutkia Saturnuksen renkaiden pieni\u00e4 palasia laitteella, jota kutsutaan nimell\u00e4 Cosmic Dust Analyzer!<\/p>","protected":false},"excerpt":{"rendered":"<p>After spending nearly 13 years orbiting the planet Saturn, the Cassini\u2013Huygens mission will soon be over! The spacecraft is now performing a series of daring dives between the planet and [&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\/2017\/04\/cassini_will_pass_through_unexplored_areas_between_the_planet_saturn_and_its_rings\/17877479-2-eng-GB\/Cassini_will_pass_through_unexplored_areas_between_the_planet_Saturn_and_its_rings.jpg","esa_banner_description":"Cassini will pass through unexplored areas between the planet Saturn and its rings","esa_banner_credit":"NASA\/JPL-Caltech","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/04\/Cassini_will_pass_through_unexplored_areas_between_the_planet_Saturn_and_its_rings","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":[10,11,12],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-441","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/441","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=441"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/441\/revisions"}],"predecessor-version":[{"id":4477,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/441\/revisions\/4477"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=441"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=441"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=441"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=441"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=441"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=441"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=441"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=441"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}