Xi Zezong (June 6, 1927, Yuanqu, Shanxi – December 27, 2008, Beijing) was a Chinese astronomical historian. He is best known for his finding in Ancient Chinese history of the reference to Ganymede being visible to the human eye by ancient astronomer Gan De, before it was officially recognised by the west. He is a member of the Chinese Academy of Sciences, and an Awardee of the Astronomy Prize.
Read more about Xi Zezong: Career