Apparent Retrograde Motion (Visual Explanation)
History of Astronomy Part 3: Copernicus and Heliocentrism
Heliocentrism and Geocentrism
An animation to explain the (apparent) retrograde motion of Mars, using actual 2020 planet positions
Heliocentric Retrograde Motion Explained Animation
How Does Retrograde Motion Work?
Geocentric Explanation for Retrograde Motion
How can Planets be in Retrograde? Geocentrism Explained
Ptolemy vs. Copernicus: Which Model of the Universe Was Right?
Geocentric vs Heliocentric Model of the Universe
What is Planetary Retrograde. A Complete Description. (In under 3 minutes).
Mercury retrograde, explained WITHOUT astrology
Retrograde Motion
Ch03C Heliocentric Model Retrograde Motion
Epicycles Animation
Copernican Explanation for Retrograde Motion
retrograde motion & phases of Venus in the heliocentric Solar System model
retrograde motion & phases of Venus in the geocentric Solar System model
Retrograde Motion and the Copernican Explanation