In astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the...

modified by epicycles, and at uniform speeds. The Copernican model displaced the geocentric model of Ptolemy that had prevailed for centuries, which had placed...

the 2nd century AD the predominant model, which would be inherited by medieval astronomy, was the geocentric model described in Ptolemy's Almagest. The...

responsible for the conception of the first mechanical model of the world, which is outlined by a geocentric model. He postulated that the Earth was at the center...

trying to perfect the geocentric model eventually using the heliocentric model of the Solar System. The use of the Solar System model began as a resource...

the Kerala school of astronomy and mathematics. It is conceptually a geocentric model, or more precisely geoheliocentric: the Earth is at the centre of the...

century BC Greece, philosophers developed the geocentric model, based on astronomical observation; this model proposed that the center of the Universe lies...

from the Earth when it was on the Earth-side of the Sun. In Ptolemy's geocentric model, it was impossible for any of the planets' orbits to intersect the...

Pythagoreanism. Ancient heliocentrism was, however, eclipsed by the geocentric model presented by Ptolemy in the Almagest and accepted in Aristotelianism...

Church promoted his work, which included the only mathematically sound geocentric model of the Solar System, and unlike most Greek mathematicians, Ptolemy's...