{"id":195710,"date":"2026-08-29T18:41:10","date_gmt":"2026-08-29T18:41:10","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/195710\/"},"modified":"2026-08-29T18:41:10","modified_gmt":"2026-08-29T18:41:10","slug":"zeme-mozna-prezije-zanik-slunce-naznacuje-studie","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/195710\/","title":{"rendered":"Zem\u011b mo\u017en\u00e1 p\u0159e\u017eije z\u00e1nik Slunce, nazna\u010duje studie"},"content":{"rendered":"

S vyu\u017eit\u00edm nejnov\u011bj\u0161\u00edch model\u016f hv\u011bzdn\u00e9 evoluce a\u00a0slapov\u00fdch interakc\u00ed v\u011bdeck\u00fd t\u00fdm zjistil, \u017ee Zem\u011b pravd\u011bpodobn\u011b p\u0159e\u017eije f\u00e1zi rud\u00e9ho obra (RGB) i\u00a0n\u00e1slednou f\u00e1zi asymptotick\u00e9 ob\u0159\u00ed v\u011btve (AGB) Slunce, av\u0161ak pouze v\u00a0p\u0159\u00edpad\u011b, \u017ee Slunce b\u011bhem sv\u00fdch z\u00e1v\u011bre\u010dn\u00fdch f\u00e1z\u00ed evoluce ztrat\u00ed hmotu dostate\u010dn\u011b rychle.<\/p>\n

Des\u00edtky let si akademick\u00e1 astronomick\u00e1 obec i\u00a0\u0161ir\u0161\u00ed ve\u0159ejnost kladou ot\u00e1zky o\u00a0vzd\u00e1len\u00e9 budoucnosti vesm\u00edru, na\u0161eho Slunce i\u00a0Zem\u011b. Dosavadn\u00ed studie p\u0159itom doch\u00e1zely k\u00a0r\u016fzn\u00fdm z\u00e1v\u011br\u016fm\u00a0\u2013 n\u011bkter\u00e9 p\u0159edpov\u00eddaly, \u017ee Slunce Zemi pohlt\u00ed, jin\u00e9 p\u0159edpov\u00eddaly jej\u00ed p\u0159e\u017eit\u00ed.<\/p>\n

Ve studii publikovan\u00e9 v\u00a0\u010dervnu v\u00a0\u010dasopise Astronomy & Astrophysics<\/a> v\u011bdci vyu\u017eili aktualizovan\u00fd model slapov\u00e9ho p\u016fsoben\u00ed, kter\u00e9 zn\u00e1me nap\u0159\u00edklad z\u00a0p\u016fsoben\u00ed M\u011bs\u00edce na Zemi, a\u00a0testovali r\u016fzn\u00e9 rychlosti \u00fabytku hmotnosti Slunce.<\/p>\n

<\/a><\/p>\n

Zkoumali, co se stane s\u00a0ob\u011b\u017enou dr\u00e1hou Zem\u011b a\u00a0dal\u0161\u00edch planet, a\u017e Slunce projde f\u00e1z\u00ed rud\u00e9ho obra a\u00a0asymptotick\u00e9 ob\u0159\u00ed v\u011btv\u011b, tedy jednou z\u00a0posledn\u00edch etap v\u00fdvoje hv\u011bzdy.<\/p>\n

Slapov\u00e9 s\u00edly jsou d\u016fsledkem nerovnom\u011brn\u00e9ho gravita\u010dn\u00edho p\u016fsoben\u00ed jednoho t\u011blesa na druh\u00e9. Gravita\u010dn\u00ed s\u00edla toti\u017e kles\u00e1 se vzd\u00e1lenost\u00ed: v\u00edce p\u016fsob\u00ed na ty \u010d\u00e1sti druh\u00e9ho t\u011blesa, kter\u00e9 jsou zdroji gravitace nejbl\u00ed\u017ee. Na \u010d\u00e1sti, kter\u00e9 jsou od n\u011bj nejvzd\u00e1len\u011bj\u0161\u00ed, p\u016fsob\u00ed naopak slab\u011bji. Na Zemi tento jev zn\u00e1me nap\u0159\u00edklad v\u00a0podob\u011b p\u0159\u00edlivu a\u00a0odlivu, kter\u00e9 zp\u016fsobuje p\u0159edev\u0161\u00edm gravita\u010dn\u00ed p\u016fsoben\u00ed M\u011bs\u00edce.<\/p>\n

Konkr\u00e9tn\u011b v\u011bdci modelovali v\u00fdvoj ob\u011b\u017en\u00fdch drah Merkuru, Venu\u0161e, Zem\u011b a\u00a0Marsu a\u00a0sledovali, jestli se planety dostate\u010dn\u011b vzd\u00e1l\u00ed od Slunce d\u00edky \u00fabytku jeho hmoty, nebo zda je slapov\u00e9 p\u016fsoben\u00ed naopak st\u00e1hne bl\u00ed\u017ee ke Slunci, kde budou pohlceny. \u010c\u00edm rychleji toti\u017e Slunce ztr\u00e1c\u00ed hmotu, t\u00edm rychleji sl\u00e1bne jeho gravitace a\u00a0t\u00edm v\u00edce se Zem\u011b a\u00a0dal\u0161\u00ed planety od Slunce vzdaluj\u00ed.<\/p>\n

Ve stejn\u00e9 pozdn\u00ed f\u00e1zi hv\u011bzdn\u00e9ho v\u00fdvoje, do kter\u00e9 se jednou dostane i\u00a0na\u0161e Slunce, se dnes nach\u00e1z\u00ed hv\u011bzda L2\u00a0Puppis. M\u00e1 nav\u00edc podobnou po\u010d\u00e1te\u010dn\u00ed hmotnost jako Slunce (0,98\u00a0hmotnosti Slunce). V\u011bdci proto vyu\u017eili \u00fadaje o\u00a0L2\u00a0Puppis, zejm\u00e9na o\u00a0rychlosti, s\u00a0jakou tato hv\u011bzda ztr\u00e1c\u00ed hmotu, aby l\u00e9pe porozum\u011bli tomu, jak rychle by mohlo Slunce v\u00a0t\u00e9to f\u00e1zi ztr\u00e1cet hmotu a\u00a0co by to znamenalo pro osud Zem\u011b.<\/p>\n

Foto: Astronomick\u00fd \u00fastav KU Leuven <\/p>\n

Schematick\u00fd v\u00fdvoj Slunce b\u011bhem jeho ob\u0159\u00edch f\u00e1z\u00ed. Obr\u00e1zek zn\u00e1zor\u0148uje Slunce v\u00a0jeho sou\u010dasn\u00e9 podob\u011b, jak proch\u00e1z\u00ed dv\u011bma ob\u0159\u00edmi f\u00e1zemi, ne\u017e sv\u016fj \u017eivot zakon\u010d\u00ed jako b\u00edl\u00fd trpasl\u00edk. Studie uk\u00e1zala, \u017ee Merkur a\u00a0Venu\u0161e budou pohlceny expanduj\u00edc\u00edm Sluncem, zat\u00edmco Zem\u011b a\u00a0Mars p\u0159e\u017eij\u00ed a\u00a0ocitnou se na \u0161ir\u0161\u00ed ob\u011b\u017en\u00e9 dr\u00e1ze. Velikosti a\u00a0vzd\u00e1lenosti nejsou v\u00a0m\u011b\u0159\u00edtku.<\/p>\n

N\u011bkter\u00e9 star\u0161\u00ed studie p\u0159edpov\u00eddaly, \u017ee Slunce Zemi b\u011bhem f\u00e1ze AGB pohlt\u00ed. Nov\u011bj\u0161\u00ed studie ale poukazuje na to, \u017ee Zem\u011b je ovliv\u0148ov\u00e1na dv\u011bma protich\u016fdn\u00fdmi procesy: jak se Slunce rozp\u00edn\u00e1, s\u00edl\u00ed jeho slapov\u00e9 p\u016fsoben\u00ed na Zemi, \u010d\u00edm\u017e se ob\u011b\u017en\u00e1 dr\u00e1ha Zem\u011b zmen\u0161uje. Sou\u010dasn\u011b v\u0161ak Slunce ztr\u00e1c\u00ed hmotu, v\u00a0d\u016fsledku \u010deho\u017e sl\u00e1bne jeho gravitace a\u00a0ob\u011b\u017en\u00e1 dr\u00e1ha Zem\u011b se naopak zv\u011bt\u0161uje.<\/p>\n

<\/a><\/p>\n

Osud Zem\u011b tedy z\u00e1vis\u00ed na tom, kter\u00fd efekt p\u0159ev\u00e1\u017e\u00ed.<\/p>\n

\u201eOsud Zem\u011b z\u00e1vis\u00ed na k\u0159ehk\u00e9 rovnov\u00e1ze mezi t\u011bmito dv\u011bma jevy. Pokud p\u0159ev\u00e1\u017e\u00ed slapov\u00e9 interakce, Zem\u011b bude pohlcena. Pokud p\u0159ev\u00e1\u017e\u00ed \u00fabytek hmoty, Zem\u011b se od Slunce bude vzdalovat,\u201c vysv\u011btlil hlavn\u00ed autor studie Mats Esseldeurs, v\u00fdzkumn\u00edk z\u00a0Astronomick\u00e9ho \u00fastavu KU Leuven<\/a>.<\/p>\n

Merkur a\u00a0Venu\u0161e nep\u0159e\u017eij\u00ed<\/p>\n

Podle nov\u00e9ho modelu a\u00a0simulac\u00ed f\u00e1zi rud\u00e9ho obra planety Merkur a\u00a0Venu\u0161e nep\u0159e\u017eij\u00ed. P\u0159i rozp\u00edn\u00e1n\u00ed Slunce se sice ob\u011b\u017en\u00e1 dr\u00e1ha Venu\u0161e bude zv\u011bt\u0161ovat a\u00a0planeta se bude od Slunce vzdalovat, ale Slunce se bude rozp\u00ednat rychleji, ne\u017e se Venu\u0161e dok\u00e1\u017ee vzdalovat. Stejn\u00fd osud podle modelu \u010dek\u00e1 i\u00a0Merkur.<\/p>\n

Naopak jin\u00fd osud by mohl potkat Mars, kter\u00fd je podobn\u011b jako Zem\u011b vzd\u00e1len\u011bj\u0161\u00ed od Slunce. Podle v\u00fdpo\u010dt\u016f by m\u011bl Mars p\u0159e\u017e\u00edt RGB i\u00a0pozd\u011bj\u0161\u00ed AGB f\u00e1zi.<\/p>\n

\u201eNejv\u011bt\u0161\u00ed nejistota u\u017e nespo\u010d\u00edv\u00e1 ve v\u00fdpo\u010dtech slapov\u00fdch interakc\u00ed, ale v\u00a0tom, kolik hmoty budouc\u00ed Slunce ztrat\u00ed. Pozorov\u00e1n\u00ed ob\u0159\u00edch hv\u011bzd podobn\u00fdch Slunci zat\u00edm nazna\u010duj\u00ed, \u017ee Zem\u011b p\u0159e\u017eije, k\u00a0jistot\u011b ale pot\u0159ebujeme lep\u0161\u00ed pozorov\u00e1n\u00ed,\u201c uzav\u0159el Esseldeurs.<\/p>\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"S vyu\u017eit\u00edm nejnov\u011bj\u0161\u00edch model\u016f hv\u011bzdn\u00e9 evoluce a\u00a0slapov\u00fdch interakc\u00ed v\u011bdeck\u00fd t\u00fdm zjistil, \u017ee Zem\u011b pravd\u011bpodobn\u011b p\u0159e\u017eije f\u00e1zi rud\u00e9ho obra…\n","protected":false},"author":2,"featured_media":195711,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[11],"tags":[7978,8279,2812,54,77,1540,53,52,6293],"class_list":["post-195710","post","type-post","status-publish","format-standard","has-post-thumbnail","category-svet","tag-slunce","tag-slunecni-soustava","tag-studie","tag-svet","tag-veda","tag-vesmir","tag-world","tag-world-news","tag-zeme"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/117180267706165604","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/195710","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=195710"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/195710\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/195711"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=195710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=195710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=195710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}