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Nicolaus Copernicus is born in the city Toru (Thorn)
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In 1510 Copernicus moved to Frombork (Frauenburg), a town in Vistula Lagoon.
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Copernicus writes a six page hand-written paper describing his ideas about the sun being the center of the universe, and making available to only his friends.
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Copernicus's major theory was published in the book, Derevolutionibus Orbium Coelestium in the year of his death.
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Copernicus passes away in Frombork, Poland