{"id":922,"date":"2004-11-15T15:45:00","date_gmt":"2004-11-15T14:45:00","guid":{"rendered":"https:\/\/kids.esa.int\/water_on_mars\/"},"modified":"2026-10-08T00:33:48","modified_gmt":"2026-10-07T22:33:48","slug":"water_on_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/cs\/water_on_mars\/","title":{"rendered":"Voda na Marsu"},"content":{"rendered":"
\n

V mnoha ohledech je Mars ze v\u0161ech planet nejpodobn\u011bj\u0161\u00ed Zemi. N\u00e1v\u0161t\u011bvn\u00edk by zjistil, \u017ee den na Marsu je jen o n\u011bco del\u0161\u00ed ne\u017e den na Zemi. Mars m\u00e1 tak\u00e9 p\u0159ibli\u017en\u011b stejnou sklon osy jako Zem\u011b, a proto se na n\u011bm st\u0159\u00eddaj\u00ed ro\u010dn\u00ed obdob\u00ed.<\/p>\n<\/div>\n

Jak Mars, tak Zem\u011b maj\u00ed b\u00edl\u00e9 pol\u00e1rn\u00ed \u010depi\u010dky. Ty na Marsu jsou mnohem men\u0161\u00ed a ten\u010d\u00ed, tak\u017ee v zim\u011b rychle nar\u016fstaj\u00ed a v l\u00e9t\u011b t\u00e9m\u011b\u0159 zmiz\u00ed. Jsou mnohem chladn\u011bj\u0161\u00ed ne\u017e pol\u00e1rn\u00ed \u010depi\u010dky na Zemi, a proto obsahuj\u00ed krom\u011b vodn\u00edho ledu tak\u00e9 zmrzl\u00fd oxid uhli\u010dit\u00fd (tzv. \u2018such\u00fd led\u2019, kter\u00fd se pou\u017e\u00edv\u00e1 k vytv\u00e1\u0159en\u00ed mlhy p\u0159i divadeln\u00edch p\u0159edstaven\u00edch).<\/p>\n

\"Cracks
Trhliny na Marsu nazna\u010duj\u00ed p\u0159\u00edtomnost vody<\/figcaption><\/figure>\n

Mars se nach\u00e1z\u00ed uprost\u0159ed doby ledov\u00e9, tak\u017ee na jeho povrchu v sou\u010dasn\u00e9 dob\u011b nem\u016f\u017ee existovat kapaln\u00e1 voda. Zd\u00e1 se v\u0161ak, \u017ee v minulosti byla tato planeta teplej\u0161\u00ed a vlh\u010d\u00ed.<\/p>\n

Na sn\u00edmc\u00edch po\u0159\u00edzen\u00fdch kosmick\u00fdmi sondami jsou vid\u011bt klikat\u00e9 kan\u00e1ly, kter\u00e9 p\u0159ipom\u00ednaj\u00ed vyschl\u00e1 koryta \u0159ek. Nazna\u010duj\u00ed, \u017ee po povrchu kdysi tekla obrovsk\u00e1 mno\u017estv\u00ed vody \u2013 mo\u017en\u00e1 z taj\u00edc\u00edho ledu. Mo\u017en\u00e1 zde dokonce pr\u0161elo a sn\u011b\u017eilo. Mnoh\u00e9 z t\u011bchto kan\u00e1l\u016f z\u0159ejm\u011b vypl\u0148ovaly velk\u00e9 kr\u00e1tery nebo \u00fast\u00edly na severn\u00ed pl\u00e1n\u011b. N\u011bkte\u0159\u00ed v\u011bdci se domn\u00edvaj\u00ed, \u017ee severn\u00ed polovinu Marsu pokr\u00fdval velk\u00fd oce\u00e1n.<\/p>\n

Kam se ta voda pod\u011bla? \u010c\u00e1st z n\u00ed mo\u017en\u00e1 unikla do vesm\u00edru. Zbytek je zamrzl\u00fd v zemi.<\/p>","protected":false},"excerpt":{"rendered":"

In many ways, Mars is the most Earthlike of all the planets. A visitor would find that a day on Mars is only slightly longer than one on Earth. Mars […]<\/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\/01\/omega_image_of_the_southern_polar_cap_of_mars_18_january2\/17912443-2-eng-GB\/OMEGA_image_of_the_southern_polar_cap_of_Mars_18_January.jpg","esa_banner_description":"OMEGA image of the southern polar cap of Mars 18 January","esa_banner_credit":"ESA - OMEGA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/01\/OMEGA_image_of_the_southern_polar_cap_of_Mars_18_January2","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-922","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/comments?post=922"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/922\/revisions"}],"predecessor-version":[{"id":4741,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/922\/revisions\/4741"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=922"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=922"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=922"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=922"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=922"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=922"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=922"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}