{"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\/sl\/methane_lakes_and_ice_pebbles\/","title":{"rendered":"Jezera metana in ledeni kamen\u010dki"},"content":{"rendered":"
\n

Saturnov luna Titan je eden najve\u010djih in najbolj zanimivih satelitov v Oson\u010dju. Na \u017ealost je njegova povr\u0161ina skrita pod debelo plastjo oran\u017enih oblakov. \u0160e do nedavnega nih\u010de ni vedel, kak\u0161na je povr\u0161ina Titana.<\/p>\n<\/div>\n

Eden od na\u010dinov, kako prodreti skozi obla\u010dno plast, je uporaba radarskega instrumenta na vesoljski sondi Cassini agencije NASA. Radijski signali s sonde Cassini prehajajo skozi oblake in se odbijajo od povr\u0161ine. Z analizo odmevov so znanstveniki nedavno odkrili \u0161tevilna temna obmo\u010dja. Nekatera od teh obmo\u010dij so povezana z ozkimi, vijugastimi kanali \u2013 verjetno rekami.<\/p>\n

Zdi se verjetno, da so gladka, temna obmo\u010dja na radarskih posnetkih jezera. Vendar pa je temperatura na povr\u0161ini Titana -180 \u00b0C, zato v njih ne more biti vode. Zdi se namre\u010d, da so sestavljena iz teko\u010dega metana ali etana. (Na Zemlji se metan uporablja kot gorivo v kotlih in kuhalnikih.)<\/p>\n

\"First
Prvi barvni pogled na povr\u0161ino Titana<\/figcaption><\/figure>\n

Mnogi so upali, da bo sonda Huygens agencije ESA med spustom na povr\u0161ino 14. januarja 2005 pristala v jezeru metana. Njena kamera pa je pokazala suho ravnino, prekrito z ledenimi kamen\u010dki.<\/p>\n

Od tega spektakularnega uspeha so znanstveniki na\u0161li nenavaden na\u010din, da izvejo ve\u010d o okolici sonda Huygens. Klju\u010d je bil nenavaden vzorec nihanja v radijskem signalu, ki ga je sonda Huygens po\u0161iljala sondi Cassini. Del radijskega \u017earka se je odbijal od povr\u0161ine in ni \u0161el naravnost k sondi Cassini. Analiza signala je pokazala, da je povr\u0161ina do 2 km od sonde precej ravna. To suho jezero je prete\u017eno prekrito z ledenimi kamen\u010dki premera pribli\u017eno 5\u201310 cm.<\/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\/sl\/wp-json\/wp\/v2\/posts\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=879"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/879\/revisions"}],"predecessor-version":[{"id":4716,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/879\/revisions\/4716"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=879"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=879"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=879"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=879"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=879"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=879"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=879"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}