Nicolaus Copernicus was the first one to give the heliocentric model of the solar system. The heliocentric model of the solar system describes the sun to be at the center of the solar system and earth and other planets with their moons revolving about it in concentric orbits.
Kepler believed in Copernicus's heliocentric model but gave laws of planetary motion that described the orbit of the planets to be elliptical instead of circular.
Tycho Brahe view of the solar system was that sun revolved around earth but other planets revolved around the sun.
Ptolemy's geocentric model considered earth to be the center of the universe and sun and other planets revolving about it.
