Copernicus and the trial of Galileo

Nicolaus Copernicus is the first to discover a Sun-centered system in which the earth, rotating on its own axis every twenty-four hours, revolved around the sun once a year. In 1543 he published a book named the revolutions of the celestial orbs. His book was all about the heliocentric theory which involves the thought that the earth revolves around the sun. Although the first theory was the geocentric theory which was created by Aristotle.