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adreamer adreamer
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6 years ago
Apparent retrograde motion occurs when a planet appears to
A) be stationary with respect to background stars
B) move eastward with respect to background stars
C) move due north with respect to background stars
D) move westward with respect to background stars
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
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DonskoyDonskoy
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6 years ago
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adreamer Author
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6 years ago
You make an excellent tutor!
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Yesterday
Thank you, thank you, thank you!
dri
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2 hours ago
Thanks for your help!!
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