ASTRONOMERS ESSAY 

The teacher told us to do an essay about the astronomers that we have talked about and compare to of them so is what i am doing with the astronomers Nicolaus Copernicus and Claudius Ptolemy.

On the one hand, the theory of Claudius Ptolemy was that the earth was the center of the universe.
He has a geocentric view. Ptolemy synthesized Greek knowledge of the known Universe. His work enabled astronomers to make accurate predictions of planetary positions and solar and lunar eclipses, promoting acceptance of his view of the cosmos in the Byzantine and Islamic worlds and throughout Europe for more than 14000 years.
By using Ptolemys tables, astronomers could accurately predict eclipses and the positions of planets.
Because real visible events in the sky seemed to confirm the truth of Ptolemys views, his ideas were accepted for centuries until thye Polish astronomers, Copernicus, proposed in 1543 that the Sun, rather than the Earth, belonged in the center.

As i mentioned Copernicus, on the other hand, Nicolas Copernicus synthesized observational data to formulate a comprehensive, Sun-centered cosmology, launching modern astronomy and setting off a scientific revolution. He had a heliocentric theory.