{"id":824,"date":"2004-12-02T15:53:00","date_gmt":"2004-12-02T14:53:00","guid":{"rendered":"https:\/\/kids.esa.int\/check_it_out\/"},"modified":"2026-10-08T00:32:42","modified_gmt":"2026-10-07T22:32:42","slug":"check_it_out","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/check_it_out\/","title":{"rendered":"Katso t\u00e4m\u00e4"},"content":{"rendered":"
\n

Avaruudessa ei ole autotallia. Kun avaruusalus on l\u00e4htenyt Maasta, kaikki toivovat, ett\u00e4 sen kaikki j\u00e4rjestelm\u00e4t toimivat moitteettomasti. Ensimm\u00e4isten kiertoratojen aikana ESA:n Euroopan avaruusoperaatiokeskuksen (ESOC) teht\u00e4v\u00e4n\u00e4 on tarkistaa, ett\u00e4 avaruusalus on oikealla kiertoradalla ja ett\u00e4 sen p\u00e4\u00e4j\u00e4rjestelm\u00e4t \u2013 viestint\u00e4, virransy\u00f6tt\u00f6 jne. \u2013 toimivat.<\/p>\n<\/div>\n

Jos avaruusalus toimii aurinkoenergialla, yksi ensimm\u00e4isist\u00e4 teht\u00e4vist\u00e4 on avata \u2018siivet\u2019, jotta ne voivat ker\u00e4t\u00e4 auringonvaloa.<\/p>\n

Kun avaruusaluksen toimintatarkastus on suoritettu onnistuneesti, insin\u00f6\u00f6rit alkavat kytke\u00e4 laitteet p\u00e4\u00e4lle yksi kerrallaan. T\u00e4t\u00e4 kutsutaan \u2018k\u00e4ytt\u00f6\u00f6notoksi\u2019.<\/p>\n

Ensimm\u00e4iset kuvat tai mittaustulokset osoittavat, toimivatko laitteet odotetulla tavalla. Jos eiv\u00e4t, niit\u00e4 s\u00e4\u00e4det\u00e4\u00e4n, kunnes tulokset paranevat. ESOC tarkistaa my\u00f6s, etteiv\u00e4t laitteet aiheuta h\u00e4iri\u00f6it\u00e4 l\u00e4hell\u00e4 oleville muille laitteille.<\/p>\n

Yksi monimutkaisimmista k\u00e4ytt\u00f6\u00f6notto-ohjelmista koski ESA:n Cluster-satelliitteja. Kes\u00e4ll\u00e4 2000 laukaisut nelj\u00e4 Cluster-satelliittia kuljettavat mukanaan yhteens\u00e4 44 mittauslaitetta.<\/p>\n

Tutkijoiden ja insin\u00f6\u00f6rien tiimit joutuivat noudattamaan yksityiskohtaista suunnitelmaa tarkistaakseen ja valvoakseen jokaista satelliittia ja sen laitteita. Kesti yli kolme kuukautta, ennen kuin avaruusalukset olivat valmiita aloittamaan teht\u00e4v\u00e4ns\u00e4, jonka tarkoituksena oli tutkia Auringon ja Maan v\u00e4list\u00e4 yhteytt\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"

There is no garage in space. Once a spacecraft has left planet Earth, everyone hopes that all of its onboard systems will work properly. During the first few orbits, the […]<\/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\/2003\/11\/main_control_room_at_esoc_darmstadt_germany2\/17905163-2-eng-GB\/Main_Control_Room_at_ESOC_Darmstadt_Germany.jpg","esa_banner_description":"Main Control Room at ESOC, Darmstadt, Germany","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/11\/Main_Control_Room_at_ESOC_Darmstadt_Germany2","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":[10,65,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-824","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/824","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=824"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/824\/revisions"}],"predecessor-version":[{"id":1967,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/824\/revisions\/1967"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=824"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=824"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=824"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=824"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=824"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=824"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=824"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}