{"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\/hu\/methane_lakes_and_ice_pebbles\/","title":{"rendered":"Met\u00e1n-tavak \u00e9s j\u00e9gkavicsok"},"content":{"rendered":"<div class=\"lede\">\n<p>A Szaturnusz Tit\u00e1n nev\u0171 holdja a Naprendszer egyik legnagyobb \u00e9s legizgalmasabb holdja. Sajnos felsz\u00edn\u00e9t vastag, narancss\u00e1rga felh\u0151takar\u00f3 rejti el. Eg\u00e9szen a k\u00f6zelm\u00faltig senki sem tudta, milyen a Tit\u00e1n felsz\u00edne.<\/p>\n<\/div>\n<p>A felh\u0151r\u00e9teg \u00e1tt\u00f6r\u00e9s\u00e9nek egyik m\u00f3dja a NASA Cassini \u0171rszond\u00e1j\u00e1n tal\u00e1lhat\u00f3 radarberendez\u00e9s haszn\u00e1lata. A Cassini \u00e1ltal kibocs\u00e1tott r\u00e1di\u00f3jelek \u00e1thatolnak a felh\u0151n, majd visszaver\u0151dnek a felsz\u00ednr\u0151l. A visszhangok elemz\u00e9s\u00e9vel a tud\u00f3sok a k\u00f6zelm\u00faltban sz\u00e1mos s\u00f6t\u00e9t foltot fedeztek fel. Ezek k\u00f6z\u00fcl n\u00e9h\u00e1ny keskeny, kanyarg\u00f3s csatorn\u00e1hoz \u2013 val\u00f3sz\u00edn\u0171leg foly\u00f3khoz \u2013 kapcsol\u00f3dik.<\/p>\n<p>Val\u00f3sz\u00edn\u0171nek t\u0171nik, hogy a radarfelv\u00e9teleken l\u00e1that\u00f3 sima, s\u00f6t\u00e9t ter\u00fcletek tavak. A Tit\u00e1n felsz\u00edni h\u0151m\u00e9rs\u00e9klete azonban -180 \u00b0C, \u00edgy ezek nem tartalmazhatnak vizet. Ehelyett \u00fagy t\u0171nik, hogy foly\u00e9kony met\u00e1nb\u00f3l vagy et\u00e1nb\u00f3l \u00e1llnak. (A F\u00f6ld\u00f6n a met\u00e1ng\u00e1zt kaz\u00e1nokban \u00e9s t\u0171zhelyekben \u00e9getik el.)<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"546\" data-credit=\"ESA\/NASA\/JPL\/University of Arizona\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/01\/First_colour_view_of_Titan_s_surface2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2005\/01\/first_colour_view_of_titan_s_surface2\/17907791-2-eng-GB\/First_colour_view_of_Titan_s_surface.png\" alt=\"First colour view of Titan&#x27;s surface\"><figcaption>Az els\u0151 sz\u00ednes felv\u00e9tel a Tit\u00e1n felsz\u00edn\u00e9r\u0151l<\/figcaption><\/figure>\n<p>Sokan abban rem\u00e9nykedtek, hogy az ESA Huygens szond\u00e1ja 2005. janu\u00e1r 14-\u00e9n, a felsz\u00edn fel\u00e9 t\u00f6rt\u00e9n\u0151 ereszked\u00e9se sor\u00e1n egy met\u00e1n-t\u00f3ba csobban majd. A szonda kamer\u00e1ja azonban egy j\u00e9gkavicsokkal bor\u00edtott, sz\u00e1raz s\u00edks\u00e1got mutatott.<\/p>\n<p>Ezen l\u00e1tv\u00e1nyos siker \u00f3ta a tud\u00f3sok egy szokatlan m\u00f3dszert tal\u00e1ltak arra, hogy t\u00f6bbet megtudjanak a Huygens k\u00f6rnyezet\u00e9r\u0151l. A kulcsot a Huygens-t\u0151l a Cassini-hez \u00e9rkez\u0151 r\u00e1di\u00f3jel szokatlan hull\u00e1mz\u00e1sa jelentette. A r\u00e1di\u00f3hull\u00e1m egy r\u00e9sze a felsz\u00ednr\u0151l visszaver\u0151d\u00f6tt, \u00e9s nem jutott el egyenesen a Cassini-hez. A jel elemz\u00e9se kimutatta, hogy a szonda k\u00f6r\u00fcl 2 km-es k\u00f6rzetben a felsz\u00edn meglehet\u0151sen s\u00edk. Ezt a kisz\u00e1radt t\u00f3medret f\u0151k\u00e9nt k\u00f6r\u00fclbel\u00fcl 5\u201310 cm \u00e1tm\u00e9r\u0151j\u0171 j\u00e9gkavicsok bor\u00edtj\u00e1k.<\/p>","protected":false},"excerpt":{"rendered":"<p>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, [&hellip;]<\/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\/hu\/wp-json\/wp\/v2\/posts\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=879"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/879\/revisions"}],"predecessor-version":[{"id":4716,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/879\/revisions\/4716"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=879"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=879"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=879"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=879"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=879"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=879"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=879"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}