{"id":375503,"date":"2018-08-12T11:49:33","date_gmt":"2018-08-12T09:49:33","guid":{"rendered":"http:\/\/hudo.com\/si\/?p=375503"},"modified":"2018-08-12T11:49:33","modified_gmt":"2018-08-12T09:49:33","slug":"nasa-uspesno-izstrelila-sondo-proti-soncu","status":"publish","type":"post","link":"https:\/\/hudo.com\/si\/aktualno\/nasa-uspesno-izstrelila-sondo-proti-soncu\/","title":{"rendered":"Nasa uspe\u0161no izstrelila sondo proti Soncu"},"content":{"rendered":"
\n

Sondo so z Nasinega izstreli\u0161\u010da na Cap Canaveralu na Floridi izstrelili ob 3.31 po lokalnem \u010dasu (9.31 po srednjeevropskem).<\/p>\n

1,5 milijarde dolarjev vredno plovilo Parker bo najprej poletelo proti Veneri, ki je drugi Soncu najbli\u017eji planet. Nato bo sku\u0161alo izkoristiti Venerino gravitacijo za pridobitev hitrosti za pribli\u017eevanje Soncu. To se bo za\u010delo novembra. V Son\u010devo korono naj bi potem plovilo v sedmih letih misije vstopilo 24-krat.<\/p>\n

700 kilogramov te\u017eko plovilo brez posadke bo Sonce opazovalo z razdalje 6,1 milijona kilometrov, kar je sedemkrat bli\u017eje od kateregakoli plovila doslej. Kro\u017eilo bo s hitrostjo ve\u010d kot 690.000 kilometrov na uro.<\/p>\n

\u010ceprav se zdi razdalja \u0161e vedno velika, so tam po besedah upravljavcev misije \u017ee zelo visoke temperature. Na strani sonde, obrnjeni proti Soncu, bo namre\u010d temperatura dosegla 1370 stopinj Celzija. Pred temi visokimi temperaturami bo plovilo \u0161\u010ditilo karbonsko okovje, ki bo temperaturo ohranjalo na okoli 30 stopinjah.<\/p>\n

Za prou\u010devanje korone so se odlo\u010dili, ker se temperatura z oddaljevanjem od Sonca pove\u010duje, kar je v nasprotju s fizikalnimi zakonitostmi. Na povr\u0161ju Sonca je namre\u010d okoli 5500 stopinj Celzija, v koroni pa temperatura dose\u017ee 5,5 milijona stopinj Celzija. Zakaj se to dogaja, se astrofiziki spra\u0161ujejo \u017ee ve\u010d desetletij.<\/p>\n

S to misijo \u017eelijo izbolj\u0161ati tudi napovedovanje vesoljskega vremena. Solarne nevihte namre\u010d lahko povzro\u010dijo elektri\u010dni mrk na Zemlji ali okvaro satelitov. Z vrsto instrumentov bodo merili magnetno in elektri\u010dno polje Sonca ter tudi delce z visoko energijo.<\/p>\n

To je prvo vesoljsko Nasino plovilo, poimenovano po \u0161e \u017eive\u010dem znanstveniku. Ime je dobilo po danes 91-letnem astrofiziku Eugenu Parkerju, ki je celo svoje \u017eivljenje posvetil prou\u010devanju Sonca. “Zelo je vznemirljivo, da bomo lahko Sonce kon\u010dno pogledali od blizu,” je maja povedal Parker.<\/p>\n

Oktobra namerava sondo proti Soncu poslati tudi Evropska vesoljska agencija. Gre sicer za dva lo\u010dena projekta, a je pri\u010dakovati, da bodo v prihodnosti tesno sodelovali.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Ameri\u0161ka vesoljska agencija Nasa je danes uspe\u0161no izstrelila plovilo Parker, ki naj bi kot prvo vstopilo v Son\u010devo korono. Izstrelitev je bila sicer na\u010drtovana za soboto, vendar so jo zaradi tehni\u010dnih te\u017eav prelo\u017eili na danes.<\/p>\n","protected":false},"author":5,"featured_media":375458,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1179],"tags":[11724,2023,1682],"source":[4511],"supertag":[6103],"acf":[],"yoast_head":"\nNasa uspe\u0161no izstrelila sondo proti Soncu - Hudo Slovenija<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hudo.com\/si\/aktualno\/nasa-uspesno-izstrelila-sondo-proti-soncu\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nasa uspe\u0161no izstrelila sondo proti Soncu - Hudo Slovenija\" \/>\n<meta property=\"og:description\" content=\"Ameri\u0161ka vesoljska agencija Nasa je danes uspe\u0161no izstrelila plovilo Parker, ki naj bi kot prvo vstopilo v Son\u010devo korono. 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