TABLE OF CONTENTS
This folder contains the images and animations referenced in the lesson "Retrograde Motion Activity." Additionally, it contains all source and licensing information in the "Description" section.

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This image attempts to depict the apparent retrograde motion of the outer planets. As Earth passes an outer planet, such as Mars, the outer planet will temporarily appear to reverse its motion across the sky. Source: http://en.wikipedia.org/wiki/Retrograde_and_direct_motion License: CC-BY-SA
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Retrograde Motion of Mars

by Meredith Beaton

This is a movie of the apparent retrograde motion of Mars. Source: http://mars.jpl.nasa.gov/allabout/nightsky/nightsky04-2003animation.html. License: Public Domain
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Retrograde Motion of Mars

by Meredith Beaton

Animation of the retrograde motion of Mars in 2003. Source: Wikimedia Commons, http://en.wikipedia.org/wiki/File:Apparent_retrograde_motion_of_Mars_in_2003.gif License: CC-BY-SA
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