Johannes Kepler, an apprentice of Brahe, believed in the heliocentric universe but rejected past astronomers' belief in

Johannes Kepler believed in the heliocentric concept of the universe however rejected the idea of Circular Orbit Paths. He believed the orbits were more elliptical than perfect circles and proved it through several observations.

Johannes Kepler, an apprentice of Brahe, believed in the heliocentric universe but rejected past astronomers' belief in "Circular Orbit Path." The circular orbit path refers to the path the planets in the solar system is following. It is believed before that it follows a circular path rather than an elliptical one.