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When did Nicolaus Copernicus die?

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Nicolaus Copernicus — Nicolaus Copernicus Portrait of Nicolaus Copernicus, 1580, from the Town Hall in Toruń, Poland; in the collection of Muzeum Okręgowe w Toruniu (Regional Museum in Toruń). 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 died on May 24, 1543, in Frauenburg (now Frombork, Poland).1