{"id":1509,"date":"2023-10-12T00:02:52","date_gmt":"2023-10-11T22:02:52","guid":{"rendered":"https:\/\/www.zahadyazajimavosti.cz\/?p=1509"},"modified":"2023-10-11T02:01:59","modified_gmt":"2023-10-11T00:01:59","slug":"moznost-paleokontaktu","status":"publish","type":"post","link":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/2023\/10\/12\/moznost-paleokontaktu\/","title":{"rendered":"Mo\u017enost paleokontaktu ?"},"content":{"rendered":"

Ke Slunci se p\u0159ibli\u017euje hv\u011bzda Gliese 710 ze souhv\u011bzd\u00ed Hada, rychlost\u00ed n\u011bkolika des\u00edtek kilometr\u016f za sekundu.<\/strong>
\nRusk\u00fd astronom Vadim Bobylev z Hlavn\u00ed (Pulkovsk\u00e9) observato\u0159e (GAO RAN) pou\u017e\u00edv\u00e1 data shrom\u00e1\u017ed\u011bn\u00e1 evropskou v\u00fdzkumnou sondou Hipparcos. Podle nich se k n\u00e1m bl\u00ed\u017e\u00ed 35 000 hv\u011bzd.<\/p>\n

Rekonstrukce jejich drah uk\u00e1zala, \u017ee hv\u011bzda Gliese 710 (1) s pravd\u011bpodobnost\u00ed 86 procent prolet\u00ed v t\u011bsn\u00e9 bl\u00edzkosti Slune\u010dn\u00ed soustavy.<\/p>\n

A je mo\u017en\u00e9, \u017ee se dokonce p\u0159ibl\u00ed\u017e\u00ed k ob\u011b\u017en\u00e9 dr\u00e1ze Pluta. Ov\u0161em, nestane se to d\u0159\u00edve ne\u017e za 1,45 milion\u016f let. Hv\u011bzda Gliese 710 m\u00e1 0,6 hmotnosti Slunce, a dnes je 63 sv\u011bteln\u00fdch let daleko.<\/p>\n

Nen\u00ed mo\u017en\u00e9 \u0159\u00edci, \u017ee by hv\u011bzda narazila do Slunce. To je t\u00e9m\u011b\u0159 nemo\u017en\u00e9. Ale b\u011bhem p\u0159ibl\u00ed\u017een\u00ed gravita\u010dn\u00ed pole hv\u011bzdy zcela jist\u011b ovlivn\u00ed objekty ve Slune\u010dn\u00ed soustav\u011b. A dojde ke komet\u00e1rn\u00edmu bombardov\u00e1n\u00ed.<\/p>\n

Jin\u00fdmi slovy, Gliese 710 ovlivn\u00ed Oort\u016fv oblak – velk\u00fd „sklad“ miliard ledov\u00fdch blok\u016f, kter\u00fd se nach\u00e1z\u00ed za drahou Pluta. (2) A zm\u011bn\u00ed trajektorii mnoha „sp\u00edc\u00edch“ objekt\u016f, \u010d\u00edm\u017e se zv\u00fd\u0161\u00ed pravd\u011bpodobnost jejich st\u0159et\u016f s planetami Slune\u010dn\u00ed soustavy. V\u010detn\u011b Zem\u011b\u2026<\/p>\n

Studie tak\u00e9 uk\u00e1zala, \u017ee asi p\u0159ed 300 tis\u00edci lety, tedy pom\u011brn\u011b ned\u00e1vno, se pom\u011brn\u011b bl\u00edzko pohyboval b\u00edl\u00fd trpasl\u00edk WD 0310-688 (HIP 14 754).<\/p>\n

B\u011bhem posledn\u00edch 2 milion\u016f let se k na\u0161\u00ed hv\u011bzd\u011b p\u0159ibl\u00ed\u017eilo dev\u011bt hv\u011bzd. A za des\u00edtky miliony let jich bylo mnohem v\u00edce.<\/p>\n

N\u011bkter\u00e9 mohly m\u00edt planety, t\u0159eba i obydlen\u00e9. Mo\u017en\u00e1 i s vysoce rozvinutou civilizac\u00ed, kter\u00e1 zvl\u00e1dla meziplanet\u00e1rn\u00ed cesty. Pak by se tito obyvatel\u00e9 mohli dostat i na Zemi. A takov\u00e1 cesta by nebyla nijak n\u00e1ro\u010dn\u00e1, nevy\u017eadovala by mezihv\u011bzdn\u00fd let rychlost\u00ed bl\u00edzkou sv\u011btla.<\/p>\n

Mo\u017enost pravideln\u011b se p\u0159ibli\u017euj\u00edc\u00edch hv\u011bzd ke Slune\u010dn\u00ed soustav\u011b podporuje hypot\u00e9zu o tzv. paleokontaktu – o n\u00e1v\u0161t\u011bv\u00e1ch mimozem\u0161\u0165an\u016f v d\u00e1vn\u00e9 minulosti Zem\u011b.<\/p>\n

Nen\u00ed vylou\u010deno, \u017ee primitivn\u00ed p\u0159edkov\u00e9 lid\u00ed byli sv\u011bdky alespo\u0148 jedn\u00e9 takov\u00e9 n\u00e1v\u0161t\u011bvy.<\/p>\n

Najdou zde p\u0159\u00edpadn\u00ed obyvatel\u00e9 n\u011bkter\u00e9 planety hv\u011bzdy Gliese 710 p\u0159i jej\u00ed n\u00e1v\u0161t\u011bv\u011b za 1,45 milionu let n\u011bkoho? Nev\u00edme.<\/p>\n

Tak\u00e9 existuje jist\u00e1 pravd\u011bpodobnost, \u017ee p\u0159il\u00e9t\u00e1vaj\u00edc\u00ed hv\u011bzda bude zachycena Sluncem a a z na\u0161eho syst\u00e9mu se stane dvojhv\u011bzda. Ale za uplynul\u00e9 mili\u00f3ny a dokonce miliardy let se to je\u0161t\u011b nestalo.<\/p>\n

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

(1) http:\/\/en.wikipedia.org\/wiki\/Gliese_710<\/a> <\/em>
\n(2) http:\/\/cs.wikipedia.org\/wiki\/Oort%C5%AFv_oblak<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Ke Slunci se p\u0159ibli\u017euje hv\u011bzda Gliese 710 ze souhv\u011bzd\u00ed Hada, rychlost\u00ed n\u011bkolika des\u00edtek kilometr\u016f za sekundu.<\/p>\n","protected":false},"author":1,"featured_media":1327,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,17,19],"tags":[58,59],"class_list":["post-1509","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-historie","category-veda","category-zahady","tag-mimozemstane","tag-vesmir"],"_links":{"self":[{"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts\/1509","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=1509"}],"version-history":[{"count":1,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts\/1509\/revisions"}],"predecessor-version":[{"id":1510,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/posts\/1509\/revisions\/1510"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/media\/1327"}],"wp:attachment":[{"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/media?parent=1509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/categories?post=1509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zahadyazajimavosti.cz\/index.php\/wp-json\/wp\/v2\/tags?post=1509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}