1. contributions to astronomy
Fifteen forty-three can be considered the first year of modern science. ... Although Copernicus" views on astronomy were made public in his book the year of his death, the geocentric view of the heavens did not give way to the heliocentric view. Only until Galileo and Kepler did heliocentric view of the universe become prominent. ... "There is no one center in the universe. ... Although Copernicus did use epicycles in his model of the universe, Copernicus more easily explained the retrograde motion of the planets through his heliocentric view. ...
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