G\u00f6kbilimcilerin yeni ke\u015ffettikleri, d\u00fcnyam\u0131zdan yakla\u015f\u0131k 1400 \u0131\u015f\u0131k y\u0131l\u0131 uzakta bulunan Kepler-452b ad\u0131 verilen gezegen, \u015fimdiye kadar ke\u015ffedilenler aras\u0131nda ya\u015fama ev sahipli\u011fi yapma ihtimali en y\u00fcksek olan ve Yerk\u00fcre\u2019ye en \u00e7ok benzeyen gezegen olarak a\u00e7\u0131kland\u0131.
\nG\u00f6kbilimciler g\u00fcne\u015f benzeri bir y\u0131ld\u0131z\u0131n y\u00f6r\u00fcngesinde, ya\u015fama elveri\u015fli ko\u015fullara sahip b\u00f6lgede yer alan, Yerk\u00fcre\u2019ye yak\u0131n b\u00fcy\u00fckl\u00fckte bir gezegen ke\u015ffettiler. Kepler-452b ad\u0131 verilen gezegen, bizim G\u00fcne\u015fimize benzeyen bir G2-tip y\u0131ld\u0131z\u0131n y\u00f6r\u00fcngesinde, ya\u015fama elveri\u015fli ko\u015fullara sahip b\u00f6lgede yer alan en k\u00fc\u00e7\u00fck gezegen.<\/p>\n
NASA, Yerk\u00fcre\u2019ye benzeyen bu gezegenin canl\u0131 ya\u015fam\u0131 bar\u0131nd\u0131rma konusunda \u201caz\u0131msanmayacak bir olana\u011fa\u201d sahip oldu\u011funu a\u00e7\u0131klad\u0131 ve e\u011fer bu gezegene bitkiler g\u00f6nderilmi\u015f olsayd\u0131, ya\u015famlar\u0131n\u0131 s\u00fcrd\u00fcrme olas\u0131l\u0131\u011f\u0131na sahip olacaklar\u0131n\u0131 belirtti.
\nNASA ayr\u0131ca ya\u015fama elveri\u015fli ko\u015fullara sahip b\u00f6lgede yer ald\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclen 11 ba\u015fka gezegen ke\u015ffetti ki, bu ke\u015fif ba\u015fka bir \u201cD\u00fcnya\u201d bulma yolunda \u00f6nemli bir kilometre ta\u015f\u0131 olarak adland\u0131r\u0131labilir. Kepler-452b\u2019nin a\u00e7\u0131klanmas\u0131yla resmi olarak \u015fimdiye kadar a\u00e7\u0131klanan gezegen say\u0131s\u0131 1030\u2019a ula\u015fm\u0131\u015f oldu.<\/p>\n
NASA bilimsel g\u00f6revlerden sorumlu biriminde Ba\u015fkan Yard\u0131mc\u0131s\u0131 g\u00f6revi yapan John Grunsfeld, s\u00f6z konusu ke\u015ffi, \u201cBu heyecan verici sonu\u00e7 bizi D\u00fcnya 2.0\u2019\u0131 bulmaya bir ad\u0131m daha yakla\u015ft\u0131rd\u0131\u201d s\u00f6zleriyle de\u011ferlendirdi.<\/p>\n
Kepler-452b\u2019nin k\u00fctlesi Yery\u00fcz\u00fc\u2019nden daha b\u00fcy\u00fck olmakla birlikte, 385 g\u00fcn uzunlu\u011funda olan bir y\u0131l\u0131, d\u00fcnyadaki bir y\u0131ldan yaln\u0131zca y\u00fczde 5 oran\u0131nda daha uzun.<\/p>\n
Gezegen ya\u015fama elveri\u015fli ko\u015fullara sahip b\u00f6lge -ya da Goldilocks b\u00f6lgesi- ad\u0131 verilen bir alanda yer al\u0131yor. S\u00f6z konusu alan, bir y\u0131ld\u0131z\u0131n etraf\u0131nda, y\u00fczeyinde s\u0131v\u0131 suyun bulunabilece\u011fi uzakl\u0131kta bulunan alan olarak tan\u0131mlan\u0131yor.<\/p>\n
Gezegen kendi y\u0131ld\u0131z\u0131 olan Kepler-452\u2019ye, D\u00fcnya\u2019n\u0131n G\u00fcne\u015f\u2019e olan uzakl\u0131\u011f\u0131ndan yaln\u0131zca y\u00fczde 5 oran\u0131nda daha uzakta bulunuyor. 6 milyar ya\u015f\u0131nda oldu\u011fu hesaplanan Kepler-452 y\u0131ld\u0131z\u0131, bizim G\u00fcne\u015fimizden 1.5 milyar y\u0131l daha ya\u015fl\u0131, a\u015fa\u011f\u0131 yukar\u0131 ayn\u0131 s\u0131cakl\u0131kta, y\u00fczde 20 oran\u0131nda daha parlak ve \u00e7ap\u0131 y\u00fczde 10 oran\u0131nda daha b\u00fcy\u00fck.<\/p>\n
Kepler-452b gezegeninin \u00e7ap\u0131 ise Yerk\u00fcre\u2019ninkinden y\u00fczde 60 oran\u0131nda daha b\u00fcy\u00fck. Kepler-452b\u2019nin k\u00fctlesi ve kompozisyonu hakk\u0131nda hen\u00fcz bilgi sahibi olmasak da, daha \u00f6nce ger\u00e7ekle\u015ftirilmi\u015f ara\u015ft\u0131rmalar, bu boyutlarda olan gezegenlerin kayal\u0131kl\u0131 bir yer yap\u0131s\u0131na sahip olma ihtimalinin y\u00fcksek oldu\u011funu g\u00f6steriyor.<\/p>\n
Kepler-452 sistemi 1400 \u0131\u015f\u0131k y\u0131l\u0131 uzakta, Cygnus tak\u0131my\u0131ld\u0131z\u0131nda yer al\u0131yor. Kepler-452b\u2019yi ke\u015ffeden ekibin lideri olan, NASA Ames Ara\u015ft\u0131rma Merkezi\u2019nden Jon Jenkins, gezegeni, Yerk\u00fcre\u2019nin evrilmekte olan \u00e7evresinin nas\u0131l de\u011fi\u015fim ge\u00e7irece\u011fine ili\u015fkin bize fikir verebilecek, Yerk\u00fcre\u2019nin daha ya\u015fl\u0131 ve b\u00fcy\u00fck kuzeni olarak d\u00fc\u015f\u00fcnebilece\u011fimizi belirtiyor.<\/p>\n","protected":false},"excerpt":{"rendered":"
G\u00f6kbilimcilerin yeni ke\u015ffettikleri, d\u00fcnyam\u0131zdan yakla\u015f\u0131k 1400 \u0131\u015f\u0131k y\u0131l\u0131 uzakta bulunan Kepler-452b ad\u0131 verilen gezegen, \u015fimdiye kadar ke\u015ffedilenler aras\u0131nda ya\u015fama ev sahipli\u011fi yapma ihtimali en y\u00fcksek olan ve Yerk\u00fcre\u2019ye en \u00e7ok benzeyen gezegen olarak a\u00e7\u0131kland\u0131. G\u00f6kbilimciler g\u00fcne\u015f benzeri bir y\u0131ld\u0131z\u0131n y\u00f6r\u00fcngesinde, ya\u015fama elveri\u015fli ko\u015fullara sahip b\u00f6lgede yer alan, Yerk\u00fcre\u2019ye yak\u0131n b\u00fcy\u00fckl\u00fckte bir gezegen ke\u015ffettiler. Kepler-452b ad\u0131 […]<\/p>\n","protected":false},"author":453,"featured_media":19353,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[175,30,19],"tags":[248,2004,861,628],"class_list":["post-3091","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-138-sayi","category-astronomi","category-bilim-gundemi","tag-astronomi","tag-dunya-disi-yasam","tag-gezegen","tag-nasa"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t