What were galileos theories that support heliocentrism?
First, there were really 3 men around the same time that helped prove that the sun is at the center of the solar system. Galileo was just the most famous of the three. Tycho Brahe (1546-1601) took very specific measurements of the position of planets and the sun in the sky. His data was very very good, and would soon be used by Kepler and Galileo. Brahe did not do any calculations, he just took measurements. Kepler (1571-1630) was a student of Brahe who took over Brahe’s work when he died. He fit mathematical models to Brahe’s data, and determined that the planets traveled in elliptical orbits, and the sun (mathematically) had to be at a focus of one of the orbits. Essentially, he said that the mathematical models that fit Brahe’s data proved that the planets must orbit the sun. Galileo (1546-1642) did not support much of Kepler’s math (but did support some of it), and he did believe the planets to revolve around the sun. He developed one of the best telescopes of the time and observed
