{"id":5059,"date":"2026-08-02T00:56:32","date_gmt":"2026-08-01T22:56:32","guid":{"rendered":"https:\/\/www.zahadyazajimavosti.cz\/?p=5059"},"modified":"2026-07-05T22:08:51","modified_gmt":"2026-07-05T20:08:51","slug":"mame-se-skryvat","status":"publish","type":"post","link":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/2026\/08\/02\/mame-se-skryvat\/","title":{"rendered":"M\u00e1me se skr\u00fdvat?"},"content":{"rendered":"

Astrofyzici zjistili, jak uschovat Zemi p\u0159ed mimozem\u0161\u0165any. Na\u0161e planeta m\u016f\u017ee b\u00fdt neviditeln\u00e1<\/strong><\/p>\n

Profesor David Kipping z Columbia University v New Yorku (1) ve spolupr\u00e1ci se sv\u00fdm studentem Alexem Teachey, p\u0159i\u0161el na to, jak Zemi ukr\u00fdt p\u0159ed zraky mimozem\u0161\u0165an\u016f. Skr\u00fdt tak, aby ji jejich p\u0159\u00edstroje nemohly odhalit.<\/p>\n

Nap\u0159\u00edklad, my hled\u00e1me planety u jin\u00fdch hv\u011bzd pomoc\u00ed orbit\u00e1ln\u00edch teleskop\u016f \u2013 jako je dalekohled NASA Kepler (2). Zji\u0161\u0165uje je tzv. „tranzitn\u00ed metodou\u201c, podle toho, jak se m\u011bn\u00ed jas hv\u011bzd. A pokud se m\u011bn\u00ed – sn\u00ed\u017e\u00ed se na kr\u00e1tkou dobu, pak p\u0159es disk hv\u011bzdy p\u0159el\u00e9t\u00e1 planeta. Podle tohoto kol\u00eds\u00e1n\u00ed jasu jsou astronomov\u00e9 schopni ur\u010dit nejen p\u0159\u00edtomnost planet, ale dokonce i vzd\u00e1lenost planety od hv\u011bzdy, co\u017e umo\u017e\u0148uje zjistit, zda je \u017eivot na t\u00e9to dr\u00e1ze mo\u017en\u00fd.<\/p>\n

\"\"<\/p>\n

Obr. Orbit\u00e1ln\u00ed teleskop Kepler. I takov\u00fd mohou m\u00edt mimozem\u0161\u0165an\u00e9.<\/em><\/p>\n

Astrofyzikov\u00e9 p\u0159edpokl\u00e1daj\u00ed, \u017ee mimozem\u0161\u0165an\u00e9 pravd\u011bpodobn\u011b postupuj\u00ed stejn\u00fdm zp\u016fsobem \u2013 \u017ee maj\u00ed na na\u0161e Slunce zam\u011b\u0159en\u00e9 podobn\u00e9 dalekohledy, a postupuj\u00ed na z\u00e1klad\u011b stejn\u00e9 tranzitn\u00ed metody. To znamen\u00e1, \u017ee je mo\u017en\u00ed je oklamat. Tedy ud\u011blat n\u011bco, aby se nezm\u011bnil jas Slunce, kdy\u017e p\u0159es jeho disk projde Zem\u011b. Kipping a Teachey proto navrhuj\u00ed vys\u00edlat laserov\u00e9 impulsy sm\u011brem k p\u0159edpokl\u00e1dan\u00fdm pozorovatel\u016fm. T\u00edm by se kompenzoval p\u0159irozen\u00fd pokles jasu Slunce. A mimozem\u0161\u0165an\u00e9 si budou myslet, \u017ee Zem\u011b neexistuje.<\/p>\n

\"\"<\/p>\n

Obr. Teleskop Kepler zachycuje sn\u00ed\u017een\u00ed jasu hv\u011bzdy, kdy\u017e p\u0159es n\u00ed projde planeta.<\/em><\/p>\n

V\u011bdci se domn\u00edvaj\u00ed, \u017ee k zamaskov\u00e1n\u00ed planety bude sta\u010dit v\u00fdkon laseru 30 MW, v provozu 10 hodin ro\u010dn\u011b.<\/p>\n

Kipping a Teachey pat\u0159\u00ed k t\u011bm, kte\u0159\u00ed se ob\u00e1vaj\u00ed kontakt\u016f s p\u0159edstaviteli vysp\u011bl\u00fdch civilizac\u00ed. Jejich obavy p\u0159ed n\u011bkolika lety vyj\u00e1d\u0159il tak\u00e9 profesor Stephen Hawking, kdy\u017e \u0159ekl, \u017ee pokud n\u00e1s mimozem\u0161\u0165an\u00e9 najdou, tak je pravd\u011bpodobn\u00e9, \u017ee n\u00e1s okradou a podrob\u00ed, stejn\u011b jako Evropan\u00e9 p\u016fvodn\u00ed obyvatele Ameriky.<\/p>\n

N\u011bme\u010dt\u00ed v\u011bdci – Dr. Rene Heller a profesor Ralph Pudrits (3) ned\u00e1vno ujistili, \u017ee to, jak Zem\u011b p\u0159ech\u00e1z\u00ed p\u0159es slune\u010dn\u00ed disk, m\u016f\u017ee b\u00fdt jasn\u011b vid\u011bt z planet\u00e1rn\u00edch syst\u00e9m\u016f, vzd\u00e1len\u00fdch a\u017e 3000 sv\u011bteln\u00fdch let. A takov\u00fdch je asi 10.000. Ti v\u0161ichni by m\u011bli b\u00fdt oslepeni laserem v prvn\u00ed \u0159ad\u011b.<\/p>\n

\"\"<\/p>\n

Obr. Laserov\u00e9 pulsy ze Zem\u011b, kompenzuj\u00ed ni\u017e\u0161\u00ed jas Slunce, a uvedly by mimozem\u0161\u0165any v omyl o na\u0161\u00ed existenci.<\/em><\/p>\n

Naproti tomu se jin\u00ed v\u011bdci domn\u00edvaj\u00ed, \u017ee z\u00e1stupci jin\u00e9 pokro\u010dil\u00e9 civilizace nemohou p\u0159edstavovat nebezpe\u010d\u00ed. A tak se zat\u00edm sp\u00ed\u0161e opakovan\u011b pos\u00edlaly „inteligentn\u00ed“ sign\u00e1ly do vesm\u00edru v nad\u011bji na z\u00edsk\u00e1n\u00ed odpov\u011bdi. Ale zat\u00edm jsme \u017e\u00e1dn\u00e9 nedostali.<\/p>\n

Vedle \u201esm\u011bl\u00fdch\u201c a \u201eopatrn\u00fdch\u201c v\u011bdc\u016f je zde i dal\u0161\u00ed skupina, kter\u00e1 v\u011b\u0159\u00ed tomu, \u017ee nen\u00ed se \u010deho b\u00e1t. Mimozem\u0161\u0165an\u00e9 tu prost\u011b v\u016fbec nejsou. Alespo\u0148 ne v na\u0161\u00ed galaxii. A i kdyby existovali, pak nejsou tak vysp\u011bl\u00ed, aby se k n\u00e1m dostali, proto\u017ee jsou des\u00edtky \u010di stovky sv\u011bteln\u00fdch let daleko. A \u0159ada v\u011bdc\u016f dokonce pochybuje o mo\u017enosti mezihv\u011bzdn\u00e9ho cestov\u00e1n\u00ed u\u017e z principu.<\/p>\n

Jin\u00fdmi slovy, m\u016f\u017eeme se za\u010d\u00edt skr\u00fdvat, ale je to zbyte\u010dn\u00e9. V\u017edy\u0165 p\u0159edkl\u00e1d\u00e1n\u00ed zn\u00e1mek na\u0161eho \u017eivota u\u017e trv\u00e1 stovky milion\u016f let.<\/p>\n

Odkazy<\/em><\/strong><\/p>\n

(1) David Kipping. Columbia University. Internet: http:\/\/www.astro.columbia.edu\/profile?uid=dkipping<\/a> <\/em>
\n(2) Kepler teleskop. Wikipedia. Internet: https:\/\/cs.wikipedia.org\/wiki\/Kepler_(sonda)<\/a><\/em>
\n(3) Dr. Rene Heller – Ralph Pudrits: The Search for Extraterrestrial Intelligence in Earth’s Solar Transit Zone. Astrobiology cover story (2016\/4).\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Astrofyzici zjistili, jak uschovat Zemi p\u0159ed mimozem\u0161\u0165any. Na\u0161e planeta m\u016f\u017ee b\u00fdt neviditeln\u00e1<\/p>\n","protected":false},"author":1,"featured_media":429,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,19],"tags":[58,59],"class_list":["post-5059","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-veda","category-zahady","tag-mimozemstane","tag-vesmir"],"_links":{"self":[{"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts\/5059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/comments?post=5059"}],"version-history":[{"count":2,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts\/5059\/revisions"}],"predecessor-version":[{"id":5064,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts\/5059\/revisions\/5064"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/media\/429"}],"wp:attachment":[{"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/media?parent=5059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/categories?post=5059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/tags?post=5059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}