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
Geocentric vs Heliocentric Model of the Universe
Heliocentric Retrograde Motion Explained Animation
Geocentric Explanation for Retrograde Motion
How Does Retrograde Motion Work?
Ptolemy vs. Copernicus: Which Model of the Universe Was Right?
How can Planets be in Retrograde? Geocentrism Explained
What is Planetary Retrograde. A Complete Description. (In under 3 minutes).
Mercury retrograde, explained WITHOUT astrology
Retrograde Motion
Ch03C Heliocentric Model Retrograde Motion
Copernican Explanation for Retrograde Motion
Retrograde Motion and the Copernican Explanation
retrograde motion & phases of Venus in the geocentric Solar System model
retrograde motion & phases of Venus in the heliocentric Solar System model
Retrograde Motion: Quick Review