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symbo symbo
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7 years ago
The term “retrograde motion” for a planet refers to
A)   a temporary reversal of the planet's normal east-to-west motion past the background stars as seen from the Earth.
B)   the apparent motion of a planet's moon in the opposite direction to the motion of the planet itself during half of each orbit of the moon around the planet.
C)   a temporary reversal of a planet's direction of spin about its axis of rotation.
D)   a temporary reversal of the planet's normal west-to-east motion past the background stars as seen from the Earth.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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papachulopapachulo
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7 years ago
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