The occasional retrograde motion of Mars against the background stars is the result of the:
A) observation of a moving Mars from Earth, whose orbital motion is faster than that of Mars.
B) observation of a rapidly moving Mars from a more slowly moving Earth.
C) variable speed of Mars because its orbit is elliptical.
D) observation of Mars from the rapidly rotating Earth.
Correct Answer:
Verified
Q4: If Mars is moving retrograde it will
Q5: In Ptolemy's geocentric theory of the solar
Q6: According to the Greek geocentric model, Earth's
Q7: In the geocentric Ptolemaic model that described
Q8: One unsatisfactory feature of the Ptolemaic description
Q10: In the path of Mars against the
Q11: The geocentric model for the solar system
Q12: Which one of the following statements about
Q13: Copernicus's model for the planetary system:
A)retained Earth
Q14: Copernicus's nationality was:
A)Greek.
B)Italian.
C)Egyptian.
D)Polish.
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