Yu Xi Astronomer
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Yu Xi is a member of the following lists: Ancient Chinese astronomers, Jin dynasty (266–420) people and Writers from Shaoxing.
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Yu Xi (虞喜; fl. 307–345 AD), courtesy name Zhongning (仲寧), was a Chinese astronomer, politician, and writer of the Jin dynasty (266–420 AD). He is best known for his discovery of the precession of the equinoxes, independently of the earlier ancient Greek astronomer Hipparchus. He also postulated that the Earth could be spherical in shape instead of being flat and square, long before the idea became widely accepted in Chinese science with the advances in circumnavigation by Europeans from the 16th-20th centuries, especially with their arrival into the capital's imperial court in the 17th century.
