Hellow guys, Welcome to my website, and you are watching [138억 년 연대기] 우주의 탄생부터 인류 문명에 이르기까지!. and this vIdeo is uploaded by 과학드림 [Science Dream] at 2021-11-12T01:00:12-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.