Planets show sometimes __________ motion with respect to the stars.
A) retrospect
B) returning
C) repeated
D) retrograde
Correct Answer:
Verified
Q8: _ was the first person to see
Q9: Groups of stars that seem to form
Q11: _ first proposed the heliocentric Universe.
Q12: In the geocentric Universe, a series of
Q14: Ptolemy modified the celestial sphere model to
Q15: A/an _ _ uses a curved mirror
Q16: The dipper is a _ in Earth's
Q17: Aristotle proposed a _ Universe.
A) heliocentric
B) geocentric
C)
Q18: _ is the apparent change in position
Q18: As the Earth rotates on its axis,
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