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Image: Retrograde Motion.bjb

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Description: The motions that produce retrograde motion. As Earth passes a superior planet, such as Mars, the superior planet will temporarily appear to reverse its motion across the sky.
Title: Retrograde Motion.bjb
Credit: Own work
Author: Brian Brondel
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes

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