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tunisia81 tunisia81
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A month ago

What feature of Ptolemy's model of the universe made it possible to explain retrograde motion?



heliocentrism



elliptical orbits



epicycles



geocentrism

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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MariannaGMariannaG
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A month ago
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tunisia81 Author
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A month ago
this is exactly what I needed
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Yesterday
Good timing, thanks!
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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