Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Universe. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the center. Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Universe. Historically, heliocentrism was. heliocentrism, a cosmological model in which the Sun is assumed to lie at or near a central point (e.g., of the solar system or of the universe) while the. Based on ongoing observations of the motions of the planets, as well as previous theories from classical antiquity and the Islamic World. A heliocentric system is one in which the planets revolve around a fixed sun. Thus Mercury, Venus, the Earth, Mars, Jupiter and Saturn all revolve around the. Heliocentric and geocentric are two explanations of the arrangement of the universe, including the solar system. The geocentric model says that the earth is at. Modeled the movements of the Sun, the Moon, and the five known planets in the skies above, using a heliocentric system of orbits. Born: in Torun. Meaning of heliocentric in English having the sun at the centre, with the Earth and other planets moving around it, or based on the idea that. The heliocentric theory argues that the sun is the central body of the solar system and perhaps of the universe. Everything else (planets and their. In astronomy, heliocentrism is the belief that the Sun is at the centre of the Universe and/or the Solar System. The word is derived from the Greek (Helios.