{"id":1031,"date":"2005-05-02T12:13:00","date_gmt":"2005-05-02T10:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/radar_to_reveal_hidden_mars\/"},"modified":"2026-10-08T00:35:05","modified_gmt":"2026-10-07T22:35:05","slug":"radar_to_reveal_hidden_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/cs\/radar_to_reveal_hidden_mars\/","title":{"rendered":"Radar odhal\u00ed skryt\u00fd Mars"},"content":{"rendered":"
\n

Za\u010d\u00edn\u00e1 nov\u00e1 kapitola ve v\u00fdzkumu Marsu. Po dlouh\u00e9m zpo\u017ed\u011bn\u00ed se radarov\u00fd p\u0159\u00edstroj MARSIS na palub\u011b sondy Mars Express agentury ESA chyst\u00e1 zah\u00e1jit \u010dinnost.<\/p>\n<\/div>\n

MARSIS je prvn\u00ed p\u0159\u00edstroj, kter\u00fd byl navr\u017een k pozorov\u00e1n\u00ed pod oran\u017eovo-\u010derven\u00fdm povrchem Marsu. Funguje tak, \u017ee vys\u00edl\u00e1 n\u00edzkofrekven\u010dn\u00ed r\u00e1diov\u00e9 sign\u00e1ly sm\u011brem dol\u016f.<\/p>\n

Mnoh\u00e9 z t\u011bchto sign\u00e1l\u016f se od povrchu odr\u00e1\u017eej\u00ed p\u0159\u00edmo zp\u011bt. N\u011bkter\u00e9 sign\u00e1ly v\u0161ak pronikaj\u00ed do zem\u011b a odr\u00e1\u017eej\u00ed se od podzemn\u00edch vrstev.<\/p>\n

Anal\u00fdzou t\u011bchto odraz\u016f doufaj\u00ed v\u011bdci, \u017ee objev\u00ed podzemn\u00ed led nebo vodu. To je d\u016fle\u017eit\u00e9, proto\u017ee \u017eivot je obvykle spojen s p\u0159\u00edtomnost\u00ed vody.<\/p>\n

MARSIS bude tak\u00e9 detekovat horninov\u00e9 vrstvy do hloubky n\u011bkolika kilometr\u016f a m\u011b\u0159it v\u00fd\u0161ku hor a \u00fadol\u00ed.<\/p>\n

\"MARSIS
Hlavn\u00ed ant\u00e9na MARSIS<\/figcaption><\/figure>\n

Ne\u017e k tomu dojde, je t\u0159eba rozlo\u017eit t\u0159i ty\u010dov\u00e9 v\u00fdlo\u017en\u00edky radaru. Ty m\u011bly b\u00fdt uvoln\u011bny ji\u017e v dubnu 2004, panovaly v\u0161ak obavy, \u017ee by se mohly zaseknout nebo odsko\u010dit zp\u011bt a po\u0161kodit kosmickou lo\u010f.<\/p>\n

\u201cTakov\u00e1 nasazen\u00ed nelze p\u0159edv\u00e9st na Zemi,\u201d vysv\u011btlil John Reddy z ESA. \u201cProto se mus\u00edme spol\u00e9hat na po\u010d\u00edta\u010dov\u00e9 simulace, pokud je nelze otestovat ve vesm\u00edru.\u201d<\/p>\n

Po pe\u010dliv\u00e9 anal\u00fdze rizik se ESA rozhodla experiment uskute\u010dnit. Nejprve budou vysunuty dva 20 metr\u016f dlouh\u00e9 v\u00fdlo\u017en\u00edky, o n\u011bkolik dn\u00ed pozd\u011bji pak 7metrov\u00fd v\u00fdlo\u017en\u00edk. K tomu by m\u011blo doj\u00edt v obdob\u00ed od 2. do 12. kv\u011btna.<\/p>\n

Jakmile bude nasazen\u00ed dokon\u010deno, syst\u00e9m MARSIS projde t\u0159\u00edt\u00fddenn\u00edm testov\u00e1n\u00edm. Pot\u00e9 za\u010dne vzru\u0161uj\u00edc\u00ed radarov\u00e9 vyhled\u00e1v\u00e1n\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

A new chapter in the exploration of Mars is about to begin. After a long delay, the MARSIS radar instrument on board ESA\u2019s Mars Express orbiter is about to swing […]<\/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\/2001\/08\/marsis_prospecting_for_water2\/17863678-3-eng-GB\/MARSIS_prospecting_for_water.jpg","esa_banner_description":"MARSIS prospecting for water","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/08\/MARSIS_prospecting_for_water2","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-1031","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\/cs\/wp-json\/wp\/v2\/posts\/1031","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=1031"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1031\/revisions"}],"predecessor-version":[{"id":4806,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1031\/revisions\/4806"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=1031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=1031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=1031"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=1031"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=1031"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=1031"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=1031"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=1031"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=1031"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=1031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}