Multiple Choice
How did the ancient Greek astronomer Aristarchus of Samos determine that the Moon's diameter was about 1/3 that of Earth?
A) by measuring the time it takes the Moon to cross the face of the Sun during a solar eclipse
B) by measuring the relative durations of lunar and solar eclipses
C) by measuring the time it takes the Moon to pass in front of a background star
D) by measuring the time it takes the Moon to move through Earth's shadow during a lunar eclipse
Correct Answer:

Verified
Correct Answer:
Verified
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