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• 은하계1년; 태양이 은하수 중심을 한 바퀴 도는데 2억2천5백만 년이 걸린다 Every empire, every war, every human being who has ever lived fits inside a tiny sliver of a single lap In about 5 billion years, the Sun will exhaust its hydrogen, swell into a red ....... blog.naver.com · 2026.06.17