Bilim insanlar\u0131, hen\u00fcz D\u00fcnya yavru bir gezegenken ona Mars b\u00fcy\u00fckl\u00fc\u011f\u00fcnde bir k\u00fctlenin \u00e7arpt\u0131\u011f\u0131na ve bu k\u00fctlenin \u00e7arp\u0131\u015fmadan sonra un ufak olarak daha sonralar\u0131 Ay\u2019\u0131 \u015fekillendirecek moloz y\u0131\u011f\u0131n\u0131na d\u00f6n\u00fc\u015ft\u00fc\u011f\u00fcne dair kimyasal ipu\u00e7lar\u0131 buldular.<\/p>\n
B\u00fcy\u00fck \u00e7arp\u0131\u015fma teorisi olarak adland\u0131r\u0131lan teorinin kan\u0131tlar\u0131 Apollo Ay \u00f6rneklerinde bulunan oksijen izotoplar\u0131 \u00e7al\u0131\u015fmalar\u0131ndan gelmektedir.<\/p>\n
Ara\u015ft\u0131rman\u0131n ba\u015f\u0131nda bulunan Almanya Cologne \u00dcniversitesi\u2019nden Daniel Herwartz, Discovery News<\/em>\u2019e yazd\u0131\u011f\u0131 e-postada oksijen izotoplar\u0131n\u0131 di\u011fer gaz kal\u0131nt\u0131lar\u0131ndan \u201ckusursuz \u015fekilde ay\u0131rmay\u0131 garanti eden bir teknik\u201d geli\u015ftirdiklerini belirtti.<\/p>\n Grup, 1969 ve 1972 aras\u0131nda Apollo 11, Apollo12 ve Apollo 16 g\u00f6revleri sonunda Ay\u2019dan getirilen de\u011fi\u015fik g\u00f6kta\u015flar\u0131 ve bazalt kaya \u00f6rnekleri \u00fczerinde ara\u015ft\u0131rmalar yapt\u0131.<\/p>\n Herwartz, \u201cAyr\u0131ca elimizde NASA\u2019dan al\u0131nm\u0131\u015f toprak \u00f6rnekleri de var ama bu materyal Ay\u2019\u0131n oksijen izotopik bile\u015fimini tan\u0131mlamak i\u00e7in uygun de\u011fil. \u00c7\u00fcnk\u00fc bu toprak mikro g\u00f6kta\u015flar\u0131 ya da benzeri \u015feylerle kar\u0131\u015fm\u0131\u015f ve kirlenmi\u015f olabilir.\u201d \u015feklinde konu\u015ftu.<\/p>\n Biliminsanlar\u0131 Theia i\u00e7in bir kan\u0131t ar\u0131yorlard\u0131. \u00c7o\u011fu bilgisayar modellemesi, Ay\u2019\u0131n y\u00fczde 70 ila 90\u2019l\u0131k bir k\u0131sm\u0131n\u0131n Theia\u2019dan olu\u015ftu\u011funu \u00f6ng\u00f6r\u00fcyor. Theia\u2019n\u0131n, G\u00fcne\u015f Sistemi\u2019ndeki di\u011fer \u00e7o\u011fu gezegen gibi benzersiz bir izotopik bile\u015fime sahip olmas\u0131 gerekiyor. Biliminsanlar\u0131 e\u011fer Ay\u2019\u0131n b\u00fcy\u00fck bir k\u0131sm\u0131 Theia\u2019dan ise, D\u00fcnya\u2019dan nispeten farkl\u0131 bir kimyasal \u00f6zyap\u0131ya sahip olmas\u0131 gerekti\u011fine inan\u0131yor.<\/p>\n Ba\u015fka bilgisayar modellemeleri ise Ay\u2019\u0131n sadece y\u00fczde 8 civar\u0131nda bir k\u0131sm\u0131n\u0131n Theia\u2019dan olu\u015ftu\u011funu, kalan\u0131n\u0131n ise D\u00fcnya\u2019dan gelen bir materyalden meydana geldi\u011fini \u00f6ng\u00f6r\u00fcyor.<\/p>\n Ara\u015ft\u0131rmac\u0131lar\u0131n bu Haziran ay\u0131nda Science<\/em> dergisinde yay\u0131mlad\u0131klar\u0131 makaleye g\u00f6re, Ay y\u00fczeyinden toplanan \u00f6rneklerdeki oksijen izotoplar\u0131n\u0131n nispeten y\u00fcksek konsantrasyonuna bak\u0131ld\u0131\u011f\u0131nda, Ay\u2019daki Theia ve D\u00fcnya kar\u0131\u015f\u0131m\u0131n\u0131n y\u00fczde 50-50\u2019ye yak\u0131n olabilece\u011fi sonucu \u00e7\u0131k\u0131yor ancak hen\u00fcz bu do\u011frulanm\u0131\u015f de\u011fil.<\/p>\n Ayn\u0131 zamanda di\u011fer ara\u015ft\u0131rma gruplar\u0131 bir s\u00fcredir titanyum, silikon, krom, tungsten ve di\u011fer kimyasal elementleri ara\u015ft\u0131r\u0131yorlar ancak \u015fu ana kadar Ay \u00f6rnekleri D\u00fcnya \u00f6rneklerinden ay\u0131rt edilebilir bir farkl\u0131l\u0131k g\u00f6stermedi.<\/p>\n Colorado\u2019daki Southwest Ara\u015ft\u0131rma Enstit\u00fcs\u00fc\u2019nden gezegen bilimci Robin Canup Discovery News\u2019e \u015f\u00f6yle konu\u015ftu: \u201cBu, oksijen izotoplar\u0131nda b\u00f6ylesi bir fark\u0131n g\u00f6zlemlendi\u011fini iddia eden ilk \u00e7al\u0131\u015fma ve dolay\u0131s\u0131yla dev \u00e7arp\u0131\u015fma modelleri i\u00e7in \u00f6nemli ve yeni bir s\u0131n\u0131r belirleyebilir. \u00d6zellikle de Theia\u2019n\u0131n boyutu ve bile\u015fiminde.\u201d<\/p>\n Canup, \u201cD\u00fcnya ve Ay aras\u0131nda rapor edilen fark son derece k\u00fc\u00e7\u00fck. Hatta o kadar k\u00fc\u00e7\u00fck ki bu fark\u0131n ger\u00e7ekten mi yoksa insanlar taraf\u0131ndan m\u0131 yorumlara dayal\u0131 olarak ortaya kondu\u011fu meselesi bir \u00e7eki\u015fme ba\u015flatacak,\u201d ifadesinde bulundu ve ekledi: \u201c\u00c7\u00fcnk\u00fc bu ger\u00e7ekten \u00f6nemli bir mesele. Bu makale muhtemelen, bu konu \u00fczerine verilecek son cevap ne olursa olsun, konu a\u00e7\u0131s\u0131ndan \u00e7ok \u00f6nemli ilave \u00e7al\u0131\u015fmalar\u0131 ve tart\u0131\u015fmal\u0131 bir \u00e7eki\u015fmeyi te\u015fvik edecek bir makale.\u201d<\/p>\n Herwartz ve \u00e7al\u0131\u015fma arkada\u015flar\u0131 Ay\u2019\u0131n olu\u015fmas\u0131ndan sonra D\u00fcnya\u2019ya ne tip materyallerin eklendi\u011fini bulmak i\u00e7in antik D\u00fcnya\u2019ya ait kayalar\u0131n analiz edilmesini, b\u00f6ylece bunun oksijen izotoplar\u0131nda bir de\u011fi\u015fikli\u011fe sebep olup olmad\u0131\u011f\u0131n\u0131 g\u00f6zlemlemeyi planl\u0131yorlar.<\/p>\n","protected":false},"excerpt":{"rendered":" Bilim insanlar\u0131, hen\u00fcz D\u00fcnya yavru bir gezegenken ona Mars b\u00fcy\u00fckl\u00fc\u011f\u00fcnde bir k\u00fctlenin \u00e7arpt\u0131\u011f\u0131na ve bu k\u00fctlenin \u00e7arp\u0131\u015fmadan sonra un ufak olarak daha sonralar\u0131 Ay\u2019\u0131 \u015fekillendirecek moloz y\u0131\u011f\u0131n\u0131na d\u00f6n\u00fc\u015ft\u00fc\u011f\u00fcne dair kimyasal ipu\u00e7lar\u0131 buldular. B\u00fcy\u00fck \u00e7arp\u0131\u015fma teorisi olarak adland\u0131r\u0131lan teorinin kan\u0131tlar\u0131 Apollo Ay \u00f6rneklerinde bulunan oksijen izotoplar\u0131 \u00e7al\u0131\u015fmalar\u0131ndan gelmektedir. Ara\u015ft\u0131rman\u0131n ba\u015f\u0131nda bulunan Almanya Cologne \u00dcniversitesi\u2019nden Daniel Herwartz, […]<\/p>\n","protected":false},"author":848,"featured_media":25680,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[162,30,19],"tags":[248,787,274,799,861],"class_list":["post-11806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-125-sayi","category-astronomi","category-bilim-gundemi","tag-astronomi","tag-ay","tag-dunya","tag-dunyanin-hareketleri","tag-gezegen"],"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