Identify the individual responsible for the heliocentric theory that stated the earth revolved around the sun.

Heliocentric theory, from the word helios meaning Sun, is the theory where the Sun is at the center of the planets in a solar system. The man who proposed this was a Polish astronomer named Nicolaus Copernicus. His observation that all the celestial bodies (planets) have the same annual movement except the Sun led to this theory.