The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. The Sun is considered as the centre of ...

While Copernicus was not the first to propose a model of the solar system in which the Earth and planets revolved around the sun, his model of a heliocentric universe was both novel and timely. For ...

When asked who was the first to propose the heliocentric theory—that is, the one in which the Sun is the center of the universe and the planets revolve around it—the usual answer is Copernicus.