{"id":879,"date":"2006-07-27T09:13:00","date_gmt":"2006-07-27T07:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/methane_lakes_and_ice_pebbles\/"},"modified":"2026-10-08T00:33:18","modified_gmt":"2026-10-07T22:33:18","slug":"methane_lakes_and_ice_pebbles","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/methane_lakes_and_ice_pebbles\/","title":{"rendered":"Metaanij\u00e4rved ja j\u00e4\u00e4kivid"},"content":{"rendered":"
\n

Saturni kuu Titan on \u00fcks P\u00e4ikeses\u00fcsteemi suurimaid ja k\u00f5ige p\u00f5nevamaid kaaslasi. Kahjuks on selle pind peidetud paksu oran\u017ei pilvkatte alla. Veel hiljuti ei teadnud keegi, milline on Titani pind.<\/p>\n<\/div>\n

\u00dcks viis pilvekihti l\u00e4bida on kasutada NASA kosmoselaeva Cassini radarit. Cassini raadiosignaalid l\u00e4bivad pilve ja peegelduvad tagasi pinnalt. Kajaid uurides on teadlased hiljuti suutnud avastada palju tumedaid laike. M\u00f5ned neist laikudest on seotud kitsaste, looklevate kanalitega \u2013 t\u00f5en\u00e4oliselt j\u00f5gedega.<\/p>\n

Tundub t\u00f5en\u00e4oline, et radarpiltidel n\u00e4htavad siledad, tumedad alad on j\u00e4rved. Kuid Titani pinnatemperatuur on \u2013180 \u00b0C, seega ei saa need sisaldada vett. Selle asemel n\u00e4ivad need koosnevat vedelast metaanist v\u00f5i etaanist. (Maal kasutatakse metaanigaasi kateldes ja pliitidel.)<\/p>\n

\"First
Esimene v\u00e4rviline pilt Titani pinnast<\/figcaption><\/figure>\n

Paljud lootsid, et ESA sond \u201eHuygens\u201d maandub 14. jaanuaril 2005 pinnale laskumise k\u00e4igus metaani j\u00e4rve. Selle kaamera pildid n\u00e4itasid aga j\u00e4\u00e4kivikestega kaetud kuiva tasandikku.<\/p>\n

Selle suurep\u00e4rase edu j\u00e4rel on teadlased leidnud ebatavalise viisi, kuidas saada rohkem teavet Huygensi \u00fcmbruse kohta. V\u00f5tmeks oli ebatavaline t\u00f5usude ja languste muster Huygensi poolt Cassinile saadetud raadiosignaalis. Osa raadiosignaalist peegeldus pinnalt tagasi ega j\u00f5udnud otse Cassinini. Signaali anal\u00fc\u00fcs n\u00e4itas, et pind on sondist kuni 2 km kauguseni \u00fcsna tasane. See kuiv j\u00e4rvep\u00f5hi on peamiselt kaetud umbes 5\u201310 cm l\u00e4bim\u00f5\u00f5duga j\u00e4\u00e4kivikestega.<\/p>","protected":false},"excerpt":{"rendered":"

Saturn\u2019s moon Titan is one of the largest and most fascinating satellites in the Solar System. Unfortunately, its surface is hidden beneath a thick blanket of orange cloud. Until recently, […]<\/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\/07\/lakes_on_titan2\/18249176-2-eng-GB\/Lakes_on_Titan.jpg","esa_banner_description":"Lakes on Titan","esa_banner_credit":"NASA\/JPL","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/07\/Lakes_on_Titan2","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-879","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\/et\/wp-json\/wp\/v2\/posts\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=879"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/879\/revisions"}],"predecessor-version":[{"id":4716,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/879\/revisions\/4716"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=879"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=879"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=879"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=879"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=879"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=879"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=879"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}