{"id":1033,"date":"2005-08-08T15:37:00","date_gmt":"2005-08-08T13:37:00","guid":{"rendered":"https:\/\/kids.esa.int\/venus_express_to_unveil_earth_s_twin\/"},"modified":"2026-10-08T00:35:07","modified_gmt":"2026-10-07T22:35:07","slug":"venus_express_to_unveil_earth_s_twin","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/venus_express_to_unveil_earth_s_twin\/","title":{"rendered":"Venus Express paljastaa Maan kaksoiskappaleen"},"content":{"rendered":"
\n

Katsokaa l\u00e4nteen pilvett\u00f6m\u00e4n auringonlaskun j\u00e4lkeen tulevina kuukausina, niin ette voi olla huomaamatta loistavaa \u201ciltat\u00e4hte\u00e4\u201d. Mutta t\u00e4m\u00e4 h\u00e4ik\u00e4isev\u00e4 n\u00e4ky ei ole t\u00e4hti. Se on Venus-planeetta, joka on Euroopan uusimman syv\u00e4n avaruuden tutkimusmatkan kohde.<\/p>\n<\/div>\n

Venus Express on ensimm\u00e4inen ESA:n avaruusalus, joka tutkii Maan l\u00e4hes identtist\u00e4 kaksoisplaneettaa. Sen on m\u00e4\u00e4r\u00e4 laukaista ven\u00e4l\u00e4isell\u00e4 Sojuz-raketilla lokakuussa 2005, ja sen odotetaan saavuttavan Venuksen kiertoradan huhtikuussa 2006.<\/p>\n

Avaruusluotain lent\u00e4\u00e4 250\u201366 000 km:n korkeudella planeetan napojen yl\u00e4puolella ja viett\u00e4\u00e4 kaksi Venus-vuotta (500 Maan p\u00e4iv\u00e4\u00e4) tutkiessaan Maan l\u00e4himm\u00e4n naapuriplaneetan paksua pilvipeitett\u00e4 ja ilmakeh\u00e4\u00e4.<\/p>\n

\"Mariner
Mariner 10:n ottama kuva Venuksen pilvipeitteest\u00e4<\/figcaption><\/figure>\n

Auringosta laskettuna toiseksi sijaitsevan planeetan tutkimiseksi on l\u00e4hetetty yli 20 ven\u00e4l\u00e4ist\u00e4 ja amerikkalaista avaruusaluksia, mutta monia mysteerej\u00e4 on edelleen j\u00e4ljell\u00e4:<\/p>\n

    \n
  • \n

    Mik\u00e4 on ilmakeh\u00e4n l\u00e4mp\u00f6tila ja koostumus?<\/p>\n<\/li>\n

  • \n

    Miten ilmakeh\u00e4 kiert\u00e4\u00e4?<\/p>\n<\/li>\n

  • \n

    Miten sen koostumus muuttuu ylh\u00e4\u00e4lt\u00e4 alas p\u00e4in?<\/p>\n<\/li>\n

  • \n

    Miten ilmakeh\u00e4 on vuorovaikutuksessa maanpinnan kanssa?<\/p>\n<\/li>\n

  • \n

    Miten yl\u00e4ilmakeh\u00e4 on vuorovaikutuksessa aurinkotuulen kanssa?<\/p>\n<\/li>\n<\/ul>\n

    Venus Express -luotaimen seitsem\u00e4n tieteellist\u00e4 mittalaitetta pyrkiv\u00e4t selvitt\u00e4m\u00e4\u00e4n n\u00e4m\u00e4 mysteerit.<\/p>\n

    Kuten nimest\u00e4kin voi p\u00e4\u00e4tell\u00e4, Venus Express suunniteltiin ja rakennettiin vain kolmessa vuodessa \u2013 mik\u00e4 on planeetta-avaruusalukselle eritt\u00e4in nopea aika. ESA:n menestyksekk\u00e4\u00e4n Mars Express -kiertolaitteen tavoin avaruusalus on mukautettu selviytym\u00e4\u00e4n Venuksen korkeammista l\u00e4mp\u00f6tiloista ja s\u00e4teilyst\u00e4. Suurin osa sen mittalaitteista perustuu Mars Express- ja Rosetta-luotainten varten kehitettyyn laitteistoon.<\/p>","protected":false},"excerpt":{"rendered":"

    Look towards the west after a cloudless sunset during the coming months and you cannot fail to see a brilliant “evening star. But this dazzling sight is no star. It […]<\/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\/2004\/04\/artist_s_impression_of_venus_express2\/17881955-2-eng-GB\/Artist_s_impression_of_Venus_Express.jpg","esa_banner_description":"Artist's impression of Venus Express","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1033","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1033","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=1033"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1033\/revisions"}],"predecessor-version":[{"id":4808,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1033\/revisions\/4808"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1033"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1033"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1033"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1033"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1033"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1033"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1033"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}