Heliocentrism - wikipedia, the free encyclopedia, 1 early developments. 1.1 greek and hellenistic world; 1.2 medieval europe; 1.3 india; 1.4 medieval islamic world; 2 copernican revolution. 2.1 astronomical model. Geocentric model - wikipedia, the free encyclopedia, The geocentric model was eventually replaced by the heliocentric model. the earliest heliocentric model, copernican heliocentrism, could remove ptolemy's epicycles. The copernican model: a sun-centered solar system, A similar construction can be made to illustrate retrograde motion for a planet inside the orbit of the earth. copernicus and the need for epicycles.
History of astronomy - university of oregon, History of astronomy: early man -> little recorded information on early man's impression of the heavens, some drawings of eclipses, comets, supernovae such as the. Early theories - geocentric & heliocentric models of the, In year 5 or 6 at school? science & technology homework? visit us for info on the geocentric & heliocentric models of the universe. also find info here on claudius. Heliocentric model - universe today, The heliocentric model is a theory that places the sun as the center of the universe, and the planets orbiting around it. the heliocentric model replaced geocentrism.