In 1496, Copernicus moved to Italy and studied religious law at the University of Bologna, where he met Dimencio Maria Novara, an astronomer whom he exchanged astronomical ideas and observations with.
In 1503, Copernicus got his doctorate in canon law at the University of Ferrera and moved back home to Poland where he rejoined an Episcopal palace and took a position as canon.
You're wrong, Copernicus.
In 1508, Copernicus began creating his own model of the planetary system where he placed the sun in the center and showed in his model that the speed of the orbit of each planet depends on its distance from the sun.
In 1514, Copernicus completed a written work, Commentariolus (Latin for short commentary), which was a 40-page summary of his heliocentric planetary model.
Shortly before his death, in 1543, Copernicus published another work, De revolutionibus orbium coelestium. This book sparked much controversy because it was considered heretical and religious leader, Martin Luther spoke his opposition to De revolutionibus. The book was ultimately banned in 1616.
On May 24, 1543, Copernicus died after suffering a stroke. It is rumored that he died holding a recently published copy of De revolutionibus orbium coelestium that was given to him by Georg Joachim Rhectus, a mathematician and scholar.