Question

Heliocentrism is the belief that the Earth is the center of the universe, and that the Sun and all the planets and stars revolve around it

Answer 1

This isn't even a question... But you're wrong even in this statement. Heliocentrism is the belief that the SUN is the center of the solar system, and that all the planets revolve around it. Notice the Helio- prefix, which implies helium or the sun. Geocentrism is what you described.