How did Copernicus contribute to astronomy?

However, he spent most of his time studying mathematics and astronomy. Due to his uncle's influence, Copernicus did become a canon in Warmia, but he asked to return to Italy to study medicine and to complete his law doctorate. read more

Copernicus finished the first manuscript of his book,"De Revolutionibus Orbium Coelestium" ("On the Revolutions of the Heavenly Spheres") in 1532. In it, Copernicus established that the planets orbited the sun rather than the Earth. He laid out his model of the solar system and the path of the planets. read more

t the time when Copernicus thought up the theory, the Earth centered astronomy was in trouble. The calender was out of step; the lunar orbit had the moon’s apparent size changing when it did not. Ptomely’s Earth centered Universe was not into place. read more