{"id":975,"date":"2006-04-10T09:52:00","date_gmt":"2006-04-10T07:52:00","guid":{"rendered":"https:\/\/kids.esa.int\/arrival_of_the_venus_express\/"},"modified":"2026-10-08T00:34:24","modified_gmt":"2026-10-07T22:34:24","slug":"arrival_of_the_venus_express","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/arrival_of_the_venus_express\/","title":{"rendered":"Venus Expressin saapuminen"},"content":{"rendered":"
\n

Venus, Auringosta laskettuna toinen planeetta, on saamassa ensimm\u00e4isen eurooppalaisen vierailijansa. 11. huhtikuuta, 400 miljoonan kilometrin avaruusmatkan j\u00e4lkeen, ESA:n Venus Express -avaruusluotain hidastuu kiertoradalle t\u00e4m\u00e4n salaper\u00e4isen, Maata muistuttavan planeetan ymp\u00e4rille.<\/p>\n<\/div>\n

Ennen kuin sen 500 p\u00e4iv\u00e4\u00e4 kest\u00e4v\u00e4 tutkimusmatka voi alkaa, 1 240 kg painavan avaruusaluksen on suoritettava monimutkainen sarja toimenpiteit\u00e4 ja liikkumisia. T\u00e4m\u00e4 j\u00e4nnitt\u00e4v\u00e4, 10 p\u00e4iv\u00e4\u00e4 kest\u00e4v\u00e4 kiertoradalle siirtymisvaihe alkoi 4. huhtikuuta ja on m\u00e4\u00e4r\u00e4 p\u00e4\u00e4tty\u00e4 13. huhtikuuta.<\/p>\n

Venuksen kiertoradalle siirtymisen (VOI) man\u00f6\u00f6verin tavoitteena on hidastaa avaruusaluksen nopeutta. T\u00e4m\u00e4 kriittinen man\u00f6\u00f6veri on suoritettava t\u00e4sm\u00e4lleen oikeassa paikassa ja oikeaan aikaan, jotta Venus Express voi joutua planeetan painovoiman vaikutusalueelle.<\/p>\n

\"Venus
Venus Expressin lentorata Venukseen<\/figcaption><\/figure>\n

Ensimm\u00e4isess\u00e4 vaiheessa varmistetaan, ett\u00e4 avaruusalus on valmiina. Sen j\u00e4lkeen 11. huhtikuuta aamulla klo 09.17 (Keski-Euroopan kes\u00e4aika) alkaen p\u00e4\u00e4moottori k\u00e4ynnistyy noin 50 minuutiksi. T\u00e4m\u00e4 mahdollistaa aluksen kiinnitt\u00e4misen.<\/p>\n

Heti kun Venus Express on saapunut turvallisesti kiertoradalle, lennonjohdon henkil\u00f6kunta aloittaa uudelleen yhteydenpidon Maahan ja l\u00e4hett\u00e4\u00e4 komennot, jotka on tarkoitus suorittaa ensimm\u00e4isen kiertoradan aikana.<\/p>\n

Kiertoradalle siirtymist\u00e4 ohjaa avaruusaluksen tietokone automaattisten komentojen sarjan avulla, joka l\u00e4hetettiin Venus Expressille nelj\u00e4 p\u00e4iv\u00e4\u00e4 ennen VOI:n alkamista.<\/p>\n

Kaikista avaruusaluksen toiminnoista huolehtii Venus Expressin maahallintatiimi, joka sijaitsee ESA:n Euroopan avaruusalusten operaatiokeskuksessa (ESOC) Darmstadtissa, Saksassa.<\/p>\n

Yksityiskohtainen aikataulu ja ajankohtaiset tiedot l\u00f6ytyv\u00e4t Venus Express -verkkosivustolta osoitteesta http:\/\/venus.esa.int<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Venus, the second planet from the Sun, is about to receive its first European visitor. On 11 April, after a 400 million kilometre voyage through space, ESA’s Venus Express spacecraft […]<\/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\/2006\/04\/artist_s_impression_of_venus_express2\/17878330-2-eng-GB\/Artist_s_impression_of_Venus_Express.jpg","esa_banner_description":"Artist's impression of Venus Express","esa_banner_credit":"ESA (Image by AOES Medialab)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/04\/Artist_s_impression_of_Venus_Express2","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-975","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\/975","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=975"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/975\/revisions"}],"predecessor-version":[{"id":4768,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/975\/revisions\/4768"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=975"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=975"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=975"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=975"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=975"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=975"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=975"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}