Evropsk\u00e1 kosmick\u00e1 agentura minul\u00fd t\u00fdden zve\u0159ejnila nov\u00e9 z\u00e1b\u011bry vysokorozli\u0161ovac\u00ed stereokamery sondy Mars Express, kter\u00e9 zachycuj\u00ed zvl\u00e1\u0161tn\u00ed jev v oblasti planiny Utopia Planitia. Temn\u00e1 vrstva vulkanick\u00e9ho popela se tu \u0161\u00ed\u0159\u00ed p\u0159es sv\u011btlej\u0161\u00ed, okrov\u00fd povrch.<\/p>\n
\u201eKdy\u017e tuto \u010d\u00e1st Marsu v roce 1976 pozorovaly\u00a0orbit\u00e1ln\u00ed sondy Viking agentury NASA, byl popel znateln\u011b m\u00e9n\u011b roz\u0161\u00ed\u0159en\u00fd ne\u017e dnes,\u201c uvedla Evropsk\u00e1 kosmick\u00e1 agentura<\/a>. A i kdy\u017e jde o zm\u011bnu rozprost\u0159enou do des\u00edtek let, v geologick\u00e9m m\u011b\u0159\u00edtku je to t\u00e9m\u011b\u0159 sprint.<\/p>\n P\u016fvod t\u00e9to temn\u00e9 vrstvy sah\u00e1 hluboko do minulosti planety. Popel je podle odborn\u00edk\u016f vulkanick\u00fd, bohat\u00fd na miner\u00e1ly jako oliv\u00edn a pyroxen, vznikl\u00e9 p\u0159i vysok\u00fdch teplot\u00e1ch. Tyto l\u00e1tky kdysi vyvrhovaly mohutn\u00e9 sopky \u2013 v\u010detn\u011b gigant\u016f typu Olympus Mons. \u201eRoz\u0161\u00ed\u0159en\u00ed popela v posledn\u00edch 50 letech m\u00e1 dv\u011b mo\u017en\u00e1 vysv\u011btlen\u00ed: bu\u010f popel zvedly a roznesly mar\u0165ansk\u00e9 v\u011btry, nebo v\u00edtr odfouknul okrov\u00fd prach, kter\u00fd d\u0159\u00edve tmav\u00fd popel pokr\u00fdval,\u201c vysv\u011btluj\u00ed planet\u00e1rn\u00ed v\u011bdci.<\/p>\n Zaj\u00edmav\u00e9 je i to, co popel nep\u0159\u00edmo prozrazuje. Oliv\u00edn se toti\u017e ve vod\u011b rychle rozkl\u00e1d\u00e1. Jeho p\u0159\u00edtomnost tak nazna\u010duje, \u017ee Mars je such\u00fd u\u017e velmi dlouho.<\/p>\n Planeta, kter\u00e1 se st\u00e1le vyv\u00edj\u00ed<\/p>\n Nov\u00e9 sn\u00edmky ale odhalily i dal\u0161\u00ed fascinuj\u00edc\u00ed detaily. Povrch je poset\u00fd nejasn\u011b zaoblen\u00fdmi j\u00e1mami s vlnit\u00fdmi okraji s p\u0159\u00edhodn\u00fdm n\u00e1zvem \u201evroupkovan\u00e9 prohlubn\u011b\u201c. Ty vznikaj\u00ed, kdy\u017e se pod povrchem nach\u00e1z\u00ed led, kter\u00fd postupn\u011b sublimuje. \u201eNevyskytuj\u00ed se izolovan\u011b, ale sp\u00ed\u0161e se spojuj\u00ed a tvo\u0159\u00ed v\u011bt\u0161\u00ed oblasti, co\u017e je dokonal\u00fdm p\u0159\u00edkladem toho, jak se povrch Marsu neust\u00e1le m\u011bn\u00ed,\u201c popsali odborn\u00edci.<\/p>\n Dal\u0161\u00ed sn\u00edmek ukazuje impaktn\u00ed kr\u00e1ter o pr\u016fm\u011bru asi 15 kilometr\u016f, obklopen\u00fd sv\u011btl\u00fdm prstencem vyvr\u017een\u00e9ho materi\u00e1lu. Uvnit\u0159 jsou patrn\u00e9 k\u0159ivolak\u00e9 linie, kter\u00e9 nazna\u010duj\u00ed pomal\u00fd pohyb d\u0159\u00edv\u011bj\u0161\u00edho ledu. To v\u0161echno dohromady bour\u00e1 za\u017eitou p\u0159edstavu o Marsu jako o mrtv\u00e9m sv\u011bt\u011b. <\/p>\n Video: K\u00e1men, kter\u00fd vesm\u00edrn\u00fd rover sv\u00fdm t\u00e9m\u011b\u0159 tunov\u00fdm t\u011blem mimod\u011bk rozdrtil, skr\u00fdval to, co NASA popisuje jako opravdov\u00fd poklad.<\/p>\n Zdroj: ESA<\/a>, BBC Sky at Night Magazine<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Evropsk\u00e1 kosmick\u00e1 agentura minul\u00fd t\u00fdden zve\u0159ejnila nov\u00e9 z\u00e1b\u011bry vysokorozli\u0161ovac\u00ed stereokamery sondy Mars Express, kter\u00e9 zachycuj\u00ed zvl\u00e1\u0161tn\u00ed jev v…\n","protected":false},"author":2,"featured_media":60691,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[21117,5367,74,73,78,75,77,76,1540],"class_list":{"0":"post-60690","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-veda-a-technika","8":"tag-evropska-vesmirna-agentura","9":"tag-mars","10":"tag-science","11":"tag-science-technology","12":"tag-technika","13":"tag-technology","14":"tag-veda","15":"tag-veda-a-technika","16":"tag-vesmir"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116437274053995936","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/60690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=60690"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/60690\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/60691"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=60690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=60690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=60690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}