{"id":85582,"date":"2026-05-14T14:38:13","date_gmt":"2026-05-14T14:38:13","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/85582\/"},"modified":"2026-05-14T14:38:13","modified_gmt":"2026-05-14T14:38:13","slug":"kus-rakety-falcon-9-pravdepodobne-narazi-v-polovine-leta-do-mesice","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/85582\/","title":{"rendered":"Kus rakety Falcon 9\u00a0pravd\u011bpodobn\u011b naraz\u00ed v\u00a0polovin\u011b l\u00e9ta do M\u011bs\u00edce"},"content":{"rendered":"

Tato ud\u00e1lost, a\u010d nepl\u00e1novan\u00e1, nab\u00edz\u00ed fascinuj\u00edc\u00ed pohled do sv\u011bta nebesk\u00e9 mechaniky, z\u00e1rove\u0148 v\u0161ak varuje p\u0159ed rostouc\u00edm probl\u00e9mem vesm\u00edrn\u00e9ho odpadu, tvo\u0159en\u00e9ho lidmi.<\/p>\n

Raketov\u00fd stupe\u0148 se vydal na vzd\u00e1len\u011bj\u0161\u00ed cestu, ne\u017e je obvykl\u00e9<\/p>\n

V\u0161e za\u010dalo 15.\u00a0ledna 2025, kdy raketa Falcon 9<\/a>\u00a0vynesla do vesm\u00edru speci\u00e1ln\u00ed n\u00e1klad tvo\u0159en\u00fd lun\u00e1rn\u00edmi moduly Blue Ghost a\u00a0Hakuto-R. Zat\u00edmco prvn\u00ed, v\u011bt\u0161\u00ed stupe\u0148 rakety, se po startu vr\u00e1til na Zemi k\u00a0op\u011btovn\u00e9mu pou\u017eit\u00ed, horn\u00ed stupe\u0148 (ozna\u010den\u00fd jako 2025-010D) po spln\u011bn\u00ed sv\u00e9ho \u00fakolu z\u016fstal na velmi prot\u00e1hl\u00e9 ob\u011b\u017en\u00e9 dr\u00e1ze kolem Zem\u011b.<\/p>\n

Tento kus rakety, vyroben\u00fd hlavn\u011b z\u00a0hlin\u00edkovo-lithiov\u00e9 slitiny (pop\u0159. pokro\u010dil\u00fdch kompozit\u016f) a\u00a0vysok\u00fd zhruba jako p\u011btipatrov\u00e1 budova, se od t\u00e9 doby nekontrolovan\u011b \u201epotuluje\u201c v\u00a0prostoru mezi Zem\u00ed a\u00a0M\u011bs\u00edcem.<\/p>\n

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

Ob\u00edh\u00e1 Zemi po elipse jednou za 26\u00a0dn\u00ed, kdy se v\u00a0jej\u00edm nejbli\u017e\u0161\u00edm bod\u011b p\u0159ibli\u017euje k\u00a0Zemi na 220\u00a0000\u00a0km a\u00a0v bod\u011b nejvzd\u00e1len\u011bj\u0161\u00edm odl\u00e9t\u00e1 a\u017e do vzd\u00e1lenosti 510\u00a0000\u00a0km. A\u00a0n\u011bkde mezi ob\u011bma body jeho dr\u00e1ha prot\u00edn\u00e1 ob\u011b\u017enou dr\u00e1hu M\u011bs\u00edce.<\/p>\n

Po v\u00edce ne\u017e roce a\u00a0p\u016fl tohoto zvl\u00e1\u0161tn\u00edho \u201etance\u201c se 5.\u00a0srpna 2026\u00a0cesty rakety a\u00a0M\u011bs\u00edce s\u00a0nejv\u011bt\u0161\u00ed pravd\u011bpodobnost\u00ed protnou, konkr\u00e9tn\u011b r\u00e1no kolem 6:44\u00a0sv\u011btov\u00e9ho (Greenwichsk\u00e9ho) \u010dasu, jak upozornil server Science Alert<\/a>. Jak to v\u00edme?<\/p>\n

Nez\u00e1visl\u00fd astronom \u201edetektivem\u201c<\/p>\n

P\u0159edpov\u011b\u010f n\u00e1razu nen\u00ed v\u00a0tomto p\u0159\u00edpad\u011b d\u00edlem vl\u00e1dn\u00ed agentury, ale nez\u00e1visl\u00e9ho astronoma Billa Graye, v\u00fdvoj\u00e1\u0159e softwaru Project Pluto.<\/p>\n

Sledov\u00e1n\u00ed objekt\u016f takto daleko od Zem\u011b je p\u0159itom nesm\u00edrn\u011b obt\u00ed\u017en\u00e9. Americk\u00e1 arm\u00e1da sice pou\u017e\u00edv\u00e1 radary k\u00a0monitorov\u00e1n\u00ed i\u00a0velmi mal\u00fdch trosek v\u00a0bl\u00edzkosti Zem\u011b, ale u\u00a0M\u011bs\u00edce je radar prakticky slep\u00fd. M\u011bs\u00edc je toti\u017e 400kr\u00e1t d\u00e1le ne\u017e n\u00edzk\u00e1 ob\u011b\u017en\u00e1 dr\u00e1ha, co\u017e znamen\u00e1, \u017ee radarov\u00fd sign\u00e1l, kter\u00fd by se od objektu vr\u00e1til k\u00a0Zemi, je o\u00a0mnoho \u0159\u00e1d\u016f slab\u0161\u00ed.<\/p>\n

Gray se proto musel spolehnout na optick\u00e1 pozorov\u00e1n\u00ed z\u00a0teleskop\u016f, kter\u00e9 prov\u00e1d\u011bj\u00ed p\u0159ehl\u00eddky asteroid\u016f, a\u00a0od amat\u00e9rsk\u00fdch astronom\u016f, kter\u00fdch do \u00fanora 2026\u00a0nashrom\u00e1\u017edil celkem 1053.<\/p>\n

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

Nejv\u011bt\u0161\u00ed nezn\u00e1mou v\u00a0jeho v\u00fdpo\u010dtech je tlak slune\u010dn\u00edho z\u00e1\u0159en\u00ed. Slune\u010dn\u00ed sv\u011btlo do rakety toti\u017e neust\u00e1le jemn\u011b \u201etla\u010d\u00ed\u201c, p\u0159i\u010dem\u017e raketa m\u00e1 pom\u011brn\u011b velkou pr\u016f\u0159ezovou plochu vzhledem ke sv\u00e9 zbytkov\u00e9 hmotnosti. Nav\u00edc, proto\u017ee se vyho\u0159el\u00fd stupe\u0148 v\u00a0prostoru v\u0161elijak p\u0159evrac\u00ed, tato s\u00edla na n\u011bj p\u016fsob\u00ed nepravideln\u011b a\u00a0v \u010dase se m\u011bn\u00ed, co\u017e dr\u00e1hu \u010din\u00ed m\u00edrn\u011b chaotickou.<\/p>\n

\u201ePohyby vesm\u00edrn\u00e9ho odpadu pod vlivem gravita\u010dn\u00edch sil jsou v\u011bt\u0161inou p\u0159edv\u00eddateln\u00e9, ale slune\u010dn\u00ed tlak se s\u010d\u00edt\u00e1 a\u00a0vn\u00e1\u0161\u00ed do v\u00fdpo\u010dt\u016f nejistotu,\u201c vysv\u011btluje<\/a> Gray.<\/p>\n

Project Pluto je astronomick\u00fd software i\u00a0n\u00e1zev souvisej\u00edc\u00edch webov\u00fdch str\u00e1nek<\/a>, kter\u00e9 vyv\u00edj\u00ed a\u00a0spravuje nez\u00e1visl\u00fd astronom Bill Gray.<\/p>\n

Tento software se specializuje na v\u00fdpo\u010det drah a\u00a0sledov\u00e1n\u00ed objekt\u016f v\u00a0bl\u00edzkosti Zem\u011b (NEO), v\u010detn\u011b asteroid\u016f a\u00a0\u00falomk\u016f vesm\u00edrn\u00e9ho smet\u00ed. Project Pluto nav\u00edc zapl\u0148uje mezeru v\u00a0monitorov\u00e1n\u00ed objekt\u016f na vysok\u00fdch ob\u011b\u017en\u00fdch drah\u00e1ch (v prostoru mezi Zem\u00ed a\u00a0M\u011bs\u00edcem), kter\u00e9 americk\u00e1 arm\u00e1da sv\u00fdmi radary sleduje jen obt\u00ed\u017en\u011b kv\u016fli jejich velk\u00e9 vzd\u00e1lenosti.<\/p>\n

Zobrazit v\u0161e<\/p>\n

Co se stane v\u00a0okam\u017eiku sr\u00e1\u017eky s\u00a0M\u011bs\u00edcem?<\/p>\n

Raketa m\u00e1 narazit do M\u011bs\u00edce v\u00a0rychlosti p\u0159ibli\u017en\u011b 8700\u00a0km\/h (2,4\u00a0km\/s). Tento dopad vyvol\u00e1 z\u00e1blesk sv\u011btla a\u00a0vymr\u0161t\u00ed mra\u010dno m\u011bs\u00ed\u010dn\u00edho prachu a\u00a0\u00falomk\u016f hornin (tzv. ejecta). Samotn\u00fd n\u00e1raz prob\u011bhne pod \u00fahlem 34\u00a0stup\u0148\u016f od svislice a\u00a0o\u010dek\u00e1v\u00e1 se, \u017ee vytvo\u0159\u00ed \u010derstv\u00fd kr\u00e1ter o\u00a0pr\u016fm\u011bru asi 16\u00a0a\u017e 18\u00a0metr\u016f. Jeliko\u017e je M\u011bs\u00edc naprosto pust\u00e9 m\u00edsto, nehroz\u00ed zde v\u00a0tomto sm\u011bru nikomu a\u00a0ni\u010demu \u017e\u00e1dn\u00e9 riziko.<\/p>\n

M\u00edstem dopadu je kr\u00e1ter Einstein, rozlehl\u00e1 oblast na samotn\u00e9m okraji p\u0159ivr\u00e1cen\u00e9 strany M\u011bs\u00edce. A\u010dkoliv bude M\u011bs\u00edc v\u00a0dob\u011b n\u00e1razu nad obzorem pro pozorovatele v\u00a0Americe, tento z\u00e1blesk bude relativn\u011b slab\u00fd a\u00a0pravd\u011bpodobn\u011b nebude viditeln\u00fd b\u011b\u017en\u00fdmi dalekohledy, jak uvedl magaz\u00edn BBC Sky at Night<\/a>.<\/p>\n

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

Hlavn\u00edm sv\u011bdkem tak bude sonda NASA Lunar Reconnaissance Orbiter (LRO), kter\u00e1 ob\u00edh\u00e1 kolem M\u011bs\u00edce a\u00a0kter\u00e1 by m\u011bla m\u00edsto dopadu (zhruba o\u00a0n\u011bkolik t\u00fddn\u016f \u010di m\u011bs\u00edc\u016f pozd\u011bji) vyfotografovat.<\/p>\n

Kolize poslou\u017e\u00ed v\u011bdc\u016fm<\/p>\n

A\u010dkoliv jde o\u00a0nepl\u00e1novanou kolizi, v\u011bdci v\u00a0n\u00ed vid\u00ed p\u0159\u00edle\u017eitost. Podobn\u00e9 ud\u00e1losti nav\u00edc maj\u00ed v\u00a0historii lun\u00e1rn\u00edho v\u00fdzkumu ji\u017e svou tradici, jak p\u0159ipomn\u011bl magaz\u00edn Sky & Telescope<\/a>:<\/p>\n

Zobrazit v\u0161e<\/p>\n","protected":false},"excerpt":{"rendered":"Tato ud\u00e1lost, a\u010d nepl\u00e1novan\u00e1, nab\u00edz\u00ed fascinuj\u00edc\u00ed pohled do sv\u011bta nebesk\u00e9 mechaniky, z\u00e1rove\u0148 v\u0161ak varuje p\u0159ed rostouc\u00edm probl\u00e9mem vesm\u00edrn\u00e9ho…\n","protected":false},"author":2,"featured_media":85583,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[2727,2614,5392,26789,3870,74,73,462,2623,78,75,77,76,1540,2615],"class_list":{"0":"post-85582","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-veda-a-technika","8":"tag-astronomie","9":"tag-falcon-9","10":"tag-krater","11":"tag-lunar-reconnaissance-orbiter","12":"tag-mesic","13":"tag-science","14":"tag-science-technology","15":"tag-spacex","16":"tag-srazka","17":"tag-technika","18":"tag-technology","19":"tag-veda","20":"tag-veda-a-technika","21":"tag-vesmir","22":"tag-vesmirne-smeti"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116573444722781019","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/85582","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=85582"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/85582\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/85583"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=85582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=85582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=85582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}