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In which subject did Nicolaus Copernicus earn a doctorate in 1503?
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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.
In 1503, Nicolaus Copernicus earned a doctorate in canon law from the University of Ferrara. Although he pursued medical studies at the University of Padua during that same period, his doctoral degree was specifically in the field of canon law, which he received from an institution where he had not previously studied.12