From Ancient Greek, helios - “sun” with modern suffix centric - “centered”: “sun-centered”

A model of the solar system with the sun at the center.

First proposed by Aristarchus of Samos in the 3rd Century BCE.

Revived by Nicolaus Copernicus during the Renaissance, demonstrated through telescopic observation by Galileo Galilei, and further refined by Johannes Kepler (who mathematically demonstrated elliptical orbits).

Read more about heliocentrism.