What did Copernicus model of the universe suggest?
that Earth and all the planets revolve around the Sun
Ptomely thought that the earth was at the centre of the universe and everything revolved around it. His model had everything moving in perfect circles or circles within circles. Copernicus suggested that the Earth in fact revolved around the sun. It wasn't until Galileo and the invention of the telescope that Copernicus was proved right Later Kepler went on to prove that the planets orbit in elliptical and not circular orbits.
Aristarchus of Samos was the first person (that we know of!) that proposed a heliocentric model of the universe, as early as about 200B.C). His model was rejected mainly because of Aristotle's influence. Copernicus was the next person to propose a heliocentric model of the universe which was published in 1547. although very controversial at that time, this model was the one that caught on.
Copernicus' calculations were considered extreme because saying that the earth is not the center of the universe is saying that is also not the center the universe.?
Nicolas Copernicus came up with the Copernican Model of the Solar System. It described the Earth orbiting the Sun, displacing the Ptolemaic model, which placed the Earth at the centre of the universe, and formed the basis of what we know of the solar system to this very day. This is called a Heliocentric model of the universe, from Helios (the greek god of the sun, often used to show the sun himself), and Centric…