The Copernican System, also known as the heliocentric model, was a revolutionary theory in the field of astronomy that placed the sun at the center of the solar system, rather than the Earth. There are several synonyms for the Copernican System, including the Sun-Centered System, Heliocentric Theory, and Sun-Centered Universe. Other synonyms include the Copernican Revolution, Copernican Paradigm Shift, or the Copernican Model. Regardless of the synonym used, they all refer to the same scientific concept, which has been crucial in our understanding of the structure and function of our solar system and beyond.