Based on Heliocentrism theory the Earth and other the Planets Revolve around The Sun.....  and  telling that the Sun is not the center of the whole universe..

Based on Geocentrism theory  the Earth itself is the center of the whole solar system and the Planets and even the Sun and Moon revolves around it..

What we all believed is that is  the Solar System's Center as what we learned for so many  years of going to school...  it's Still the "SUN"  for that's what most philosophers and scientists theorized and agreed ... 

There are so many theories regarding on the solar system but the most accepted is that the sun is the center of the solar system.