{"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\/et\/radar_to_reveal_hidden_mars\/","title":{"rendered":"Radar, mis paljastab Marsi varjatud k\u00fcljed"},"content":{"rendered":"
\n

Marssi uurimise uus peat\u00fckk on kohe algamas. P\u00e4rast pikka viivitust hakkab ESA Mars Expressi orbitaalaparaadi pardal olev MARSIS-radar varsti t\u00f6\u00f6le.<\/p>\n<\/div>\n

MARSIS on esimene seade, mis on loodud selleks, et uurida Marsi oran\u017epunase pinna all olevat. See t\u00f6\u00f6tab madalsageduslike raadiosignaalide saatmise teel.<\/p>\n

Paljud neist p\u00f5rkuvad pinnalt otse tagasi. Kuid m\u00f5ned signaalid tungivad maapinnast l\u00e4bi ja p\u00f5rkuvad tagasi maap\u00f5ue kihtidelt.<\/p>\n

Neid kajusid anal\u00fc\u00fcsides loodavad teadlased avastada maa-alust j\u00e4\u00e4d v\u00f5i vett. See on oluline, sest elu on tavaliselt seotud vee olemasoluga.<\/p>\n

MARSIS tuvastab ka kivimikihid mitme kilomeetri s\u00fcgavuseni ning m\u00f5\u00f5dab m\u00e4gede ja orgude k\u00f5rgust.<\/p>\n

\"MARSIS
MARSISi peantenn<\/figcaption><\/figure>\n

Enne kui see saab toimuda, tuleb radari kolm varrasj\u00e4lgset v\u00e4ljasirutust lahti klappida. Need oleks pidanud vabastama 2004. aasta aprillis, kuid valitses mure, et need v\u00f5ivad kinni j\u00e4\u00e4da v\u00f5i tagasi p\u00f5rkuda ja kosmoselaeva kahjustada.<\/p>\n

\u201cSelliseid rakendusi ei ole v\u00f5imalik Maal demonstreerida,\u201d selgitas ESA esindaja John Reddy. \u201cSeet\u00f5ttu peame tuginema arvutisimulatsioonidele, kui neid ei ole v\u00f5imalik kosmoses testida.\u201d<\/p>\n

P\u00e4rast riskide p\u00f5hjalikku anal\u00fc\u00fcsimist on ESA otsustanud eksperimendiga edasi minna. Esmalt paigaldatakse kaks 20 meetri pikkust noolt, millele j\u00e4rgneb m\u00f5ni p\u00e4ev hiljem 7-meetrine nool. See peaks toimuma 2.\u201312. mai vahel.<\/p>\n

Kui paigaldamine on l\u00f5pule viidud, l\u00e4bib MARSIS kolme n\u00e4dala pikkuse katsetamisperioodi. Seej\u00e4rel algab p\u00f5nev radarotsing.<\/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\/et\/wp-json\/wp\/v2\/posts\/1031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=1031"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/1031\/revisions"}],"predecessor-version":[{"id":4806,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/1031\/revisions\/4806"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=1031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=1031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=1031"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=1031"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=1031"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=1031"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=1031"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=1031"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=1031"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=1031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}