Here's a breakdown:
* Heliocentric: Comes from the Greek words "helios" (sun) and "kentron" (center). It means "sun-centered."
* Geocentric: The opposite theory, which was the dominant view for centuries, is called geocentric, meaning "Earth-centered."
The heliocentric model was first proposed by Nicolaus Copernicus in the 16th century. It was a revolutionary idea that challenged the established geocentric view, which had been held for over a thousand years.
While Copernicus wasn't the first to suggest the Earth revolved around the Sun (the ancient Greeks had some ideas about it), he provided a detailed mathematical model to support his theory. His work, along with the later observations of Galileo Galilei and Johannes Kepler, eventually led to the acceptance of the heliocentric model.
