Copernicus used perfect circles for the orbits of the planets.
It made significantly better predictions of planetary positions in our sky.
3r
Kepler showed that planetary orbits were actually ellipses, not circles as proposed by Copernicus.
He suggested the orbits were circles.
Copernicus didn't disprove goecentrism, that was done by Johannes Kepler, who wrote his 3 Laws of Planetary Motion. These were then expanded on by Newton to justify his theory of Gravitation.
It made significantly better predictions of planetary positions in our sky.
ptolemaic
Yes, Copernicus' heliocentric model of the solar system, with the Sun at the center, provided more accurate predictions of planetary movements compared to Ptolemy's geocentric model, which had the Earth at the center. This was due to the simplicity and elegance of Copernicus' model, leading to a better understanding of the true nature of the solar system.
COPERNICUS!!
Kepler disagreed with Copernicus on the shape of planetary orbits. Copernicus believed in circular orbits, while Kepler's observations led him to propose elliptical orbits. Kepler's laws of planetary motion refined and corrected some of the assumptions in Copernicus' heliocentric model.
Copernicus did not reject the idea that planetary orbits around our Sun were circular.
3r
Kepler showed that planetary orbits were actually ellipses, not circles as proposed by Copernicus.
Aristarchus of Samos
He suggested the orbits were circles.
Copernicus challenged Aristotle's theories of planetary motion due to observations that didn't align with the geocentric model, particularly the retrograde motion of planets. Through his own observations and mathematical calculations, Copernicus proposed a heliocentric model where the Earth and other planets revolve around the Sun, providing a simpler explanation for the observed phenomena in the sky.
Copernicus didn't disprove goecentrism, that was done by Johannes Kepler, who wrote his 3 Laws of Planetary Motion. These were then expanded on by Newton to justify his theory of Gravitation.