{"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\/ro\/methane_lakes_and_ice_pebbles\/","title":{"rendered":"Lacuri de metan \u0219i pietricele de ghea\u021b\u0103"},"content":{"rendered":"
\n

Titan, luna lui Saturn, este unul dintre cei mai mari \u0219i mai fascinan\u021bi sateli\u021bi din Sistemul Solar. Din p\u0103cate, suprafa\u021ba sa este ascuns\u0103 sub un strat gros de nori portocalii. P\u00e2n\u0103 de cur\u00e2nd, nimeni nu \u0219tia cum arat\u0103 suprafa\u021ba lui Titan.<\/p>\n<\/div>\n

O modalitate de a str\u0103punge stratul de nori este utilizarea radarului de pe sonda spa\u021bial\u0103 Cassini a NASA. Semnalele radio emise de Cassini traverseaz\u0103 norul \u0219i se reflect\u0103 de pe suprafa\u021b\u0103. Studiind ecourile, oamenii de \u0219tiin\u021b\u0103 au reu\u0219it recent s\u0103 descopere numeroase pete \u00eentunecate. Unele dintre aceste pete sunt asociate cu canale \u00eenguste \u0219i sinuoase \u2013 probabil r\u00e2uri.<\/p>\n

Se pare c\u0103 zonele netede \u0219i \u00eentunecate din imaginile radar sunt lacuri. Cu toate acestea, temperatura la suprafa\u021ba lui Titan este de -180 \u00b0C, a\u0219a c\u0103 acestea nu pot con\u021bine ap\u0103. \u00cen schimb, par s\u0103 fie formate din metan sau etan lichid. (Pe P\u0103m\u00e2nt, gazul metan este ars \u00een cazane \u0219i aragaze.)<\/p>\n

\"First
Prima imagine color a suprafe\u021bei lui Titan<\/figcaption><\/figure>\n

Mul\u021bi oameni sperau ca sonda Huygens a ESA s\u0103 aterizeze \u00eentr-un lac de metan \u00een timpul cobor\u00e2rii sale c\u0103tre suprafa\u021b\u0103, pe 14 ianuarie 2005. Cu toate acestea, camera sa a surprins o c\u00e2mpie uscat\u0103, acoperit\u0103 cu pietricele de ghea\u021b\u0103.<\/p>\n

De la acest succes spectaculos, oamenii de \u0219tiin\u021b\u0103 au descoperit o modalitate neobi\u0219nuit\u0103 de a afla mai multe despre mediul \u00eenconjur\u0103tor al sondei Huygens. Cheia a fost un model neobi\u0219nuit de oscila\u021bii ale semnalului radio transmis de Huygens c\u0103tre Cassini. O parte din fasciculul radio se reflecta de pe suprafa\u021b\u0103, neajung\u00e2nd direct la Cassini. Analiza semnalului a ar\u0103tat c\u0103 suprafa\u021ba este destul de plan\u0103 p\u00e2n\u0103 la o distan\u021b\u0103 de 2 km de sond\u0103. Acest pat de lac uscat este acoperit \u00een mare parte de pietricele de ghea\u021b\u0103 cu diametrul de aproximativ 5-10 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\/ro\/wp-json\/wp\/v2\/posts\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/comments?post=879"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/879\/revisions"}],"predecessor-version":[{"id":4716,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/879\/revisions\/4716"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=879"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=879"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=879"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=879"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=879"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=879"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=879"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}