Multiple Choice
Which of the following was NOT done by Hipparchus, the great ancient astronomer?
A) compiled a pioneering catalog of the positions of hundreds of stars
B) created the system of star magnitudes that we still use today
C) discovered that the Earth has a motion called precession
D) explained retrograde motion
E) you can't fool me; Hipparchus did all of the above
Correct Answer:
Verified
Correct Answer:
Verified
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