A Sun-Centered View of the Universe
Family and Studies
Life as a Canon
A Heliocentric Theory
Copernicus’s Theory Can Be Summarized Like This:
01 - The center of the Earth is not the center of the Universe, only of Earth’s gravity and of the lunar sphere.02 - The Sun is fixed and all other spheres revolve around the Sun. (Copernicus retained the idea of spheres and of perfectly circular orbits. In fact, the orbits are elliptical, which the German astronomer Johannes Kepler demonstrated in 1609.)03 - Earth has more than one motion, turning on its axis and moving in a spherical orbit around the sun.04 - The stars are fixed but appear to move because of the Earth’s motion.