[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.212sqn.cz\/co-je-vlastne-slunce\/#Article","mainEntityOfPage":"https:\/\/www.212sqn.cz\/co-je-vlastne-slunce\/","headline":"Co je vlastn\u011b Slunce","name":"Co je vlastn\u011b Slunce","description":"Ka\u017ed\u00fd z\u00a0n\u00e1s v\u00ed, \u017ee na\u0161\u00ed nejbli\u017e\u0161\u00ed hv\u011bzdou je Slunce. To je od n\u00e1s vzd\u00e1leno p\u0159ibli\u017en\u011b 150\u00a0000\u00a0000 kilometr\u016f, co\u017e je ide\u00e1ln\u00ed pro to, aby se na na\u0161\u00ed planet\u011b rozvinul \u017eivot v\u00a0takov\u00e9 podob\u011b, jak jej zn\u00e1me. Rostlin\u00e1m umo\u017e\u0148uje fotosyntetizovat, p\u0159in\u00e1\u0161\u00ed n\u00e1m sv\u011btlo … ","datePublished":"2021-09-12","dateModified":"2023-05-05","author":{"@type":"Person","@id":"https:\/\/www.212sqn.cz\/author\/#Person","name":"","url":"https:\/\/www.212sqn.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/ee69a086fc043006d66000ff5e288b6b088fc8fa323128f3849437410a854832?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ee69a086fc043006d66000ff5e288b6b088fc8fa323128f3849437410a854832?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"212sqn.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.212sqn.cz\/wp-content\/uploads\/slunce3.jpg","url":"https:\/\/www.212sqn.cz\/wp-content\/uploads\/slunce3.jpg","height":0,"width":0},"url":"https:\/\/www.212sqn.cz\/co-je-vlastne-slunce\/","about":["V\u011bda"],"wordCount":440,"articleBody":"Ka\u017ed\u00fd z\u00a0n\u00e1s v\u00ed, \u017ee na\u0161\u00ed nejbli\u017e\u0161\u00ed hv\u011bzdou je Slunce. To je od n\u00e1s vzd\u00e1leno p\u0159ibli\u017en\u011b 150\u00a0000\u00a0000 kilometr\u016f, co\u017e je ide\u00e1ln\u00ed pro to, aby se na na\u0161\u00ed planet\u011b rozvinul \u017eivot v\u00a0takov\u00e9 podob\u011b, jak jej zn\u00e1me. Rostlin\u00e1m umo\u017e\u0148uje fotosyntetizovat, p\u0159in\u00e1\u0161\u00ed n\u00e1m sv\u011btlo a teplo. Dopadaj\u00edc\u00ed z\u00e1\u0159en\u00ed pak podporuje mutace a vznik nov\u00fdch druh\u016f.\u00a0Je tedy jasn\u00e9, \u017ee se bez n\u011bj neobejdeme. Dobrou zpr\u00e1vou je, \u017ee se nach\u00e1z\u00ed zhruba v\u00a0polovin\u011b sv\u00e9ho \u017eivotn\u00edho cyklu, m\u00e1me tedy p\u0159ed sebou je\u0161t\u011b asi p\u011bt miliard let, ne\u017e se z\u00a0n\u011bj stane rud\u00fd obr, kter\u00fd n\u00e1s v\u00a0podstat\u011b pohlt\u00ed.\u00a0\u00a0To v\u0161e zn\u00e1 v\u011bt\u0161ina z\u00a0n\u00e1s ji\u017e ze z\u00e1kladn\u00ed \u0161koly. Jen m\u00e1lokdo se ale zaj\u00edm\u00e1 o to, pro\u010d a jak vlastn\u011b na\u0161e Slunce z\u00e1\u0159\u00ed. Odpov\u011b\u010f je p\u0159itom d\u011bsiv\u011bj\u0161\u00ed, ne\u017e by si v\u011bt\u0161ina z\u00a0n\u00e1s um\u011bla p\u0159edstavit. Pravdou toti\u017e je, \u017ee na\u0161e nejbli\u017e\u0161\u00ed hv\u011bzda (ale nejen ona \u2013 t\u00fdk\u00e1 se to v\u00a0podstat\u011b v\u0161ech aktivn\u00edch hv\u011bzd) je ob\u0159\u00ed jadern\u00fd reaktor.\u00a0Sv\u011btlo a teplo, kter\u00e9 vyd\u00e1v\u00e1, zp\u016fsobuje pr\u00e1v\u011b jadern\u00e1 reakce, kter\u00e1 v\u00a0n\u011bm neust\u00e1le prob\u00edh\u00e1. Konkr\u00e9tn\u011b se jedn\u00e1 o p\u0159em\u011bnu vod\u00edku v\u00a0helium. A pr\u00e1v\u011b moment, kdy se takto p\u0159em\u011bn\u00ed ve\u0161ker\u00fd vod\u00edk, bude ozna\u010dovat konec \u201e\u017eivota\u201c na\u0161eho Slunce.\u00a0\u00a0Samoz\u0159ejm\u011b m\u016f\u017eeme nam\u00edtnout, \u017ee radiace je nebezpe\u010dn\u00e1 a smrt\u00edc\u00ed, a samoz\u0159ejm\u011b je to pravda. Na\u0161t\u011bst\u00ed n\u00e1s proti v\u011bt\u0161in\u011b z\u00a0n\u00ed chr\u00e1n\u00ed ozonov\u00e1 vrstva. Ani ta v\u0161ak nen\u00ed dokonal\u00e1, proto si mnoho druh\u016f vyp\u011bstovalo vlastn\u00ed ochranu, a to v\u010detn\u011b lid\u00ed.\u00a0Tou se v\u00a0na\u0161em p\u0159\u00edpad\u011b stal melanin, ko\u017en\u00ed barvivo. \u010c\u00edm v\u00edce ho m\u00e1me, tedy \u010d\u00edm tmav\u0161\u00ed je poko\u017eka, t\u00edm l\u00e9pe jsme proti slune\u010dn\u00ed radiaci chr\u00e1n\u011bni. Na druh\u00e9 stran\u011b je pravdou, \u017ee slune\u010dn\u00ed sv\u011btlo stimuluje tvorbu vitaminu D, a to je i d\u016fvod, pro\u010d maj\u00ed lid\u00e9 sv\u011btlej\u0161\u00ed poko\u017eku, \u010d\u00edm v\u00edce na sever jdeme.\u00a0Ov\u0161em i tyto ochrann\u00e9 mechanismy mohou selhat, zvl\u00e1\u0161t\u011b pokud jej nap\u0159\u00edklad po zim\u011b m\u00e1me m\u00e1lo a odcestujeme na jih, kde je mnohem intenzivn\u011bj\u0161\u00ed. N\u00e1sledkem pak \u010dasto je rakovina k\u016f\u017ee. Proto je dobr\u00e9 slunce nepodce\u0148ovat a vystavovat se mu s\u00a0m\u00edrou. P\u0159\u00edpadn\u00e9 probl\u00e9my za to toti\u017e rozhodn\u011b nestoj\u00ed.                                                                                                                                                                                                                                                                                                                                                                                        4.2\/5 - (9 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Co je vlastn\u011b Slunce","item":"https:\/\/www.212sqn.cz\/co-je-vlastne-slunce\/#breadcrumbitem"}]}]