alleryThe Moon's orbit measured against the stars takes about how many days?
A27.3
B29.5
C30.4
D31.0
Answer & Solution
Correct answer: A. 27.3
1. The sidereal month is the Moon's orbital period against a fixed frame.
2. It is about 27.32166 days.
3. 29.5 days is the synodic month, which is longer.
_Source: Wikipedia, Month, Types of months in astronomy_
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