{"id":967,"date":"2005-01-14T09:43:00","date_gmt":"2005-01-14T08:43:00","guid":{"rendered":"https:\/\/kids.esa.int\/huygens_makes_history_on_titan\/"},"modified":"2026-10-08T00:34:19","modified_gmt":"2026-10-07T22:34:19","slug":"huygens_makes_history_on_titan","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/huygens_makes_history_on_titan\/","title":{"rendered":"Huygens tekee historiaa Titanilla"},"content":{"rendered":"
\n

T\u00e4n\u00e4\u00e4n aiemmin tehtiin historiaa, kun ESA:n Huygens-luotain laskeutui onnistuneesti Saturnuksen suurimmalle kuulle, Titanille.<\/p>\n<\/div>\n

T\u00e4n\u00e4\u00e4n iltap\u00e4iv\u00e4ll\u00e4 Saksan Darmstadtissa sijaitsevassa Euroopan avaruusoperaatiokeskuksessa (ESOC) vastaanotetut signaalit osoittavat, ett\u00e4 lautasmainen avaruusalus selvisi tulikuumasta paluustaan Titanin tihe\u00e4\u00e4n ilmakeh\u00e4\u00e4n.<\/p>\n

Se oli ihmiskunnan ensimm\u00e4inen onnistunut yritys l\u00e4hett\u00e4\u00e4 luotain planeetan kokoiseen kohteeseen aurinkokunnan kaukaisimmilla ulkoreunoilla.<\/p>\n

Seitsem\u00e4n vuotta Cassini-avaruusaluksessa matkustettuaan Huygens irrotettiin emoaluksesta 25. joulukuuta.<\/p>\n

\"Huygens
Huygens laskeutuu laskuvarjolla<\/figcaption><\/figure>\n

Huygens, joka oli lent\u00e4nyt yksin 20 p\u00e4iv\u00e4\u00e4, sy\u00f6ksyi t\u00e4n\u00e4\u00e4n klo 11.13 CET (10.13 GMT) Titanin yl\u00e4ilmakeh\u00e4\u00e4n. L\u00e4mp\u00f6suojan suojassa luotain hidastui 18 000 kilometrist\u00e4 tunnissa 1 400 kilometriin tunnissa vain kolmessa minuutissa.<\/p>\n

Pian sen j\u00e4lkeen suuri laskuvarjo avautui. Noin 160 km:n korkeudessa luotaimen mittalaitteet alkoivat ottaa kuvia ja tutkia ilmakeh\u00e4\u00e4. Yli kahden tunnin ajan Huygensilta saadut tiedot vastaanotettiin ja tallennettiin Cassiniin sen lent\u00e4ess\u00e4 luotaimen yl\u00e4puolella.<\/p>\n

Koska Saturnus sijaitsee t\u00e4ll\u00e4 hetkell\u00e4 1 200 miljoonan kilometrin p\u00e4\u00e4ss\u00e4 Maasta, Cassinin l\u00e4hett\u00e4mien signaalien saapuminen kesti 67 minuuttia.<\/p>\n

Lopulta suuri radiovastaanotin Yhdysvalloissa poimi Cassinin heikot signaalit. Tiedot l\u00e4hetettiin sitten ESOC:iin analysoitaviksi. Tutkijoiden pitk\u00e4 ja j\u00e4nnitt\u00e4v\u00e4 odotus oli p\u00e4\u00e4ttynyt.<\/p>\n

\u201cTitan on kiehtova maailma, ja odotamme nyt innokkaasti tuloksia\u201d, sanoi professori David Southwood, ESA:n tiedeohjelman johtaja.<\/p>","protected":false},"excerpt":{"rendered":"

History was made earlier today when ESA\u2019s Huygens probe successfully landed on Saturn\u2019s largest moon, Titan. Signals received this afternoon at the European Space Operations Centre (ESOC) in Darmstadt, Germany, […]<\/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\/2005\/01\/artist_s_impression_of_huygens_touchdown2\/17878885-2-eng-GB\/Artist_s_impression_of_Huygens_touchdown.jpg","esa_banner_description":"Artist's impression of Huygens touchdown","esa_banner_credit":"ESA \/ D. Ducros","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/01\/Artist_s_impression_of_Huygens_touchdown2","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-967","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\/967","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=967"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/967\/revisions"}],"predecessor-version":[{"id":4760,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/967\/revisions\/4760"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=967"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=967"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=967"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=967"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=967"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=967"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=967"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}