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Where did Nicolaus Copernicus spend his final years?
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Nicolaus Copernicus
Portrait of Nicolaus Copernicus, 1580, from the Town Hall in ToruÅ, Poland; in the collection of Muzeum OkrÄgowe w Toruniu (Regional Museum in ToruÅ). In his book De revolutionibus, he proposed that the Sun was the center of the solar system and that the planets circle the Sun.
Nicolaus Copernicus spent his final years in Frauenburg (now Frombork, Poland), where he died on May 24, 1543. During his time as a church canon, he balanced his administrative and medical duties at the bishopric with his astronomical research, which he conducted in his spare time. It was in this location that he finalized his seminal work, De revolutionibus orbium coelestium libri vi, which was published in the same year as his death.123