{"id":12325,"date":"2026-04-24T18:38:32","date_gmt":"2026-04-24T18:38:32","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/04\/24\/paslaptis-marse-tamsi-deme-50-metu-slenka-per-utopia-planitia-mokslininkai-neturi-atsakymo\/"},"modified":"2026-04-24T18:38:32","modified_gmt":"2026-04-24T18:38:32","slug":"paslaptis-marse-tamsi-deme-50-metu-slenka-per-utopia-planitia-mokslininkai-neturi-atsakymo","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/04\/24\/paslaptis-marse-tamsi-deme-50-metu-slenka-per-utopia-planitia-mokslininkai-neturi-atsakymo\/","title":{"rendered":"Paslaptis Marse: tamsi d\u0117m\u0117 50 met\u0173 slenka per Utopia Planitia, mokslininkai neturi atsakymo"},"content":{"rendered":"<p>Marso pavir\u0161ius da\u017enai laikomas beveik nejudriu \u017emogaus gyvenimo masteliu, ta\u010diau Utopia Planitia regione fiksuojamas pokytis ver\u010dia tuo suabejoti. Tamsi, didel\u012f plot\u0105 dengianti zona nuo 1976 metais u\u017efiksuot\u0173 \u201eViking\u201c misij\u0173 vaizd\u0173 pama\u017eu kei\u010dia rib\u0105 tarp \u0161viesi\u0173 dulki\u0173 ir tamsesnio grunto.<\/p>\n<p>Naujesni Europos kosmoso agent\u016bros zondo \u201eMars Express\u201c steb\u0117jimai rodo, kad pietinis \u0161ios srities pakra\u0161tys per de\u0161imtme\u010dius pasislinko ma\u017eiausiai 320 kilometr\u0173 \u012f pietus. Vidutini\u0161kai tai sudaryt\u0173 apie 6,5 kilometro per metus, o toks tempas Marso mastu atrodo netik\u0117tai \u201e\u0161iuolaiki\u0161kas\u201c.<\/p>\n<h2>Kas i\u0161 ties\u0173 juda?<\/h2>\n<p>Svarbiausia detal\u0117 ta, kad tai n\u0117ra \u0161e\u0161\u0117lis tiesiogine prasme. Kalbama apie tamsesn\u012f pavir\u0161iaus med\u017eiagos plot\u0105, siejam\u0105 su vulkanin\u0117s kilm\u0117s nuogulomis ir mafini\u0173 mineral\u0173, toki\u0173 kaip olivinas ir piroksenas, gausa.<\/p>\n<p>Mokslininkai kol kas negali tvirtai pasakyti, kuris procesas lemia \u0161\u012f \u201eslinkim\u0105\u201c. Viena versija teigia, kad v\u0117jai perne\u0161a tamsi\u0105 smulki\u0105 med\u017eiag\u0105 ir ji palaipsniui dengia \u0161viesesnes dulkes, taip vizualiai \u201estumdama\u201c rib\u0105.<\/p>\n<p>Kita versija \u2013 prie\u0161inga: tamsus sluoksnis ten gal\u0117jo b\u016bti ir anks\u010diau, tik buvo u\u017epustytas \u0161viesiomis dulk\u0117mis. Tokiu atveju v\u0117jas ne tiek atne\u0161a nauj\u0105 tamsi\u0105 med\u017eiag\u0105, kiek nu\u0161luoja \u0161vies\u0173 dulki\u0173 sluoksn\u012f ir atidengia seniau buvus\u012f tams\u0173 pagrind\u0105.<\/p>\n<h2>Kod\u0117l \u012ftariamas v\u0117jas?<\/h2>\n<p>Nors Marso atmosfera labai reta, ji vis tiek paj\u0117gi formuoti reljef\u0105. Dulk\u0117s planetoje keliauja su sezoniniais v\u0117jais, susidaro dulki\u0173 s\u016bkuriai, o kartais kyla ir regionin\u0117s ar planet\u0105 apiman\u010dios dulki\u0173 audros, galin\u010dios pakeisti pavir\u0161iaus kontrastus per palyginti trump\u0105 laik\u0105.<\/p>\n<p>Utopia Planitia yra mil\u017eini\u0161ka \u0161iaurinio Marso \u017eemuma, kurios skersmuo siekia apie 3 300 kilometr\u0173. \u0160is regionas tyr\u0117jams \u012fdomus ir d\u0117l galim\u0173 senovini\u0173 vandens p\u0117dsak\u0173 bei po\u017eeminio ledo, tod\u0117l bet kokie ilgalaikiai pavir\u0161iaus poky\u010diai \u010dia gali pad\u0117ti geriau suprasti, kaip Marsas \u0161iandien \u201edirba\u201c be aktyvios tektonikos.<\/p>\n<h2>Kuo svarbus 50 met\u0173 palyginimas?<\/h2>\n<p>\u0160io rei\u0161kinio i\u0161skirtinumas \u2013 ilga steb\u0117jim\u0173 seka. Pirmuosius kadrus pateik\u0117 \u201eViking\u201c misijos 1976 metais, v\u0117liau region\u0105 reguliariai fotografavo \u201eMars Express\u201c, o naujesni palyginimai leid\u017eia matyti poky\u010dius ne geologini\u0173 epoch\u0173, o keli\u0173 de\u0161imtme\u010di\u0173 masteliu.<\/p>\n<p>Kol kas n\u0117ra duomen\u0173, kurie ai\u0161kiai patvirtint\u0173, ar tamsi med\u017eiaga realiai keliauja pavir\u0161iumi, ar tiesiog kinta dulki\u0173 danga, atidengianti senesnius sluoksnius. Ta\u010diau pats faktas, kad Marse per pus\u0161imt\u012f met\u0173 galima i\u0161matuoti \u0161imt\u0173 kilometr\u0173 masto ribos pokyt\u012f, rodo, jog net \u201erami\u201c planeta gali b\u016bti dinami\u0161ka.<\/p>\n<p>\u0160altiniai:<\/p>\n<p>https:\/\/www.livescience.com\/space\/mars\/a-giant-shadow-has-been-creeping-across-mars-for-50-years-and-scientists-arent-sure-why<\/p>\n<p>https:\/\/www.esa.int\/Science_Exploration\/Space_Science\/Mars_Express<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"UyRsmPULsW\"><p><a href=\"https:\/\/science.nasa.gov\/mission\/viking\/\">Viking Project<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cViking Project\u201d \u2014 NASA Science\" src=\"https:\/\/science.nasa.gov\/mission\/viking\/embed\/#?secret=UCF6n8PPYF#?secret=UyRsmPULsW\" data-secret=\"UyRsmPULsW\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Marso pavir\u0161ius da\u017enai laikomas beveik nejudriu \u017emogaus gyvenimo masteliu, ta\u010diau Utopia Planitia regione fiksuojamas pokytis ver\u010dia tuo suabejoti. Tamsi, didel\u012f plot\u0105 dengianti zona nuo 1976 metais u\u017efiksuot\u0173 \u201eViking\u201c misij\u0173 vaizd\u0173 pama\u017eu kei\u010dia rib\u0105 tarp \u0161viesi\u0173 dulki\u0173 ir tamsesnio grunto. Naujesni Europos kosmoso agent\u016bros zondo \u201eMars Express\u201c steb\u0117jimai rodo, kad pietinis \u0161ios srities pakra\u0161tys per de\u0161imtme\u010dius [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":12326,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[],"miestas":[],"class_list":["post-12325","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mokslas"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/12325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=12325"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/12325\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media\/12326"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=12325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=12325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=12325"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=12325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}