Ptolemys model of the universe 05:59 ptolemy's model of the universe 05:21 Ptolemy's Geocentric Model 00:30 Heliocentrism and Geocentrism 02:53 Geocentrism: Why the world doesn’t revolve around you | A-Z of ISMs Episode 7 - BBC Ideas 03:58 4 The Universe Aristotle and Ptolemy 01:58 Plato's Universe : The beauty of the geocentric model 00:21 Epicycles Animation 10:30 How can Planets be in Retrograde? Geocentrism Explained 09:51 What Is The Ptolemaic System? (Geocentric Model) 00:44 Ptolemy's model of the Universe(Geocentric) 03:13 Ptolemaic Planetary model 02:01 Ptolemy's Solar Hypotheses 08:52 Models of the Universe [Geocentric to Heliocentric] 02:53 Geocentric vs Heliocentric Model of the Universe 1:03:45 Ptolemaic Cosmology 02:52 Ptolemy's geocentric universe (aka Claudius Ptolemaeus' model) 15:18 Geocentrism vs. Heliocentrism 07:01 History of Astronomy Part 3: Copernicus and Heliocentrism More results