{"id":375457,"date":"2018-08-11T12:25:36","date_gmt":"2018-08-11T10:25:36","guid":{"rendered":"http:\/\/hudo.com\/si\/?p=375457"},"modified":"2018-08-11T12:35:30","modified_gmt":"2018-08-11T10:35:30","slug":"izstrelitev-sonde-proti-soncu-prestavljena-na-nedeljo","status":"publish","type":"post","link":"https:\/\/hudo.com\/si\/aktualno\/izstrelitev-sonde-proti-soncu-prestavljena-na-nedeljo\/","title":{"rendered":"Izstrelitev sonde proti Soncu prestavljena na nedeljo"},"content":{"rendered":"
\n

Sprva je bila izstrelitev na\u010drtovana za ob 3.53 po krajevnem \u010dasu (ob 9.53 po srednjeevropskem \u010dasu), a se je nekaj zapletlo. Nadzorna ekipa je nato pregledala sisteme in odobrila vzlet za ob 4.28, a so ga tik pred na\u010drtovanim vzletom ponovno ustavili ter prelo\u017eili za 24 ur na nedeljo, je Nasa sporo\u010dila preko Twitterja.<\/p>\n

Nepravilnosti so strokovnjaki opazili v zadnjih minutah pred vzletom, ko se je tudi spro\u017eil alarm za tlak v rezervoarjih s helijem. In\u017eenirji so zelo previdni s sondo in ne \u017eelijo ni\u010desar prepustiti naklju\u010dju.<\/p>\n

\u010casovno okno, ko je bil danes vzlet mo\u017een, da pot proti Soncu poteka optimalno, se je odprlo ob 3.33 in je bilo odprto 65 minut. Izstrelitev so na\u010drtovali za pono\u010di, ker je takrat ozra\u010dje stabilnej\u0161e.<\/p>\n

\u010casovno okno se bo v nedeljo odprlo ob 3.31, ko bodo vremenski pogoji 60-odstotno v prid izstrelitvi, so \u0161e sporo\u010dili iz Nase.<\/p>\n

Poskus dana\u0161nje izstrelitve 1,5 milijarde dolarjev vrednega vesoljskega plovila je sicer v \u017eivo preko prenosa spremljajo ve\u010d deset tiso\u010d ljudi.<\/p>\n

Plovilo Parker, ki bo predvidoma v nedeljo zgodaj zjutraj vzletelo z vesoljskega centra v Cape Canaveralu na Floridi, 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, poro\u010dajo tuje tiskovne agencije.<\/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 po ve\u010dkratni jutranji prelo\u017eitvi izstrelitve plovila Parker, ki bi kot prvo vstopilo v Son\u010devo korono, sporo\u010dila, da bodo sondo ponovno sku\u0161ali izstreliti v nedeljo zgodaj zjutraj. Izstrelitev so prelo\u017eili, ker so strokovnjaki opazili nekatere nepravilnosti, so sporo\u010dili iz Nase.<\/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":[4195,11724,2023,1682],"source":[4511],"supertag":[6103],"acf":[],"yoast_head":"\nIzstrelitev sonde proti Soncu prestavljena na nedeljo - 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\/izstrelitev-sonde-proti-soncu-prestavljena-na-nedeljo\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Izstrelitev sonde proti Soncu prestavljena na nedeljo - Hudo Slovenija\" \/>\n<meta property=\"og:description\" content=\"Ameri\u0161ka vesoljska agencija Nasa je danes po ve\u010dkratni jutranji prelo\u017eitvi izstrelitve plovila Parker, ki bi kot prvo vstopilo v Son\u010devo korono, sporo\u010dila, da bodo sondo ponovno sku\u0161ali izstreliti v nedeljo zgodaj zjutraj. 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