The Copernican Revolution was the first major change to ancient models of the solar system. The Polish astronomer Nicolaus Copernicus proposed in the early 16th century that the sun, rather than the Earth, was the center of the solar system. This heliocentric model challenged the prevailing geocentric model, where Earth was believed to be the stationary center of the universe. This shift in understanding had significant implications for the field of astronomy and laid the foundation for subsequent advancements in our understanding of the solar system.
