"Genghis Khan" Quotes from Famous Books
 ... and made several discoveries which testified to his abilities as an observer. IBN YUNIS and ABUL WEFU were Arab astronomers who earned a high reputation on account of the number and accuracy of their observations. In Persia, a descendant of the famous Genghis Khan erected an observatory, where astronomical observations were systematically made. Omar, a Persian astronomer, suggested a reformation of the calendar which, if it had been adopted, would have insured greater accuracy than can be attained by ...
— The Astronomy of Milton's 'Paradise Lost' • Thomas Orchard |
