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MCQIntermediateSolar System & Planetary Science
USAAAO — 2024 First Round
Question 16
Consider a sun-planet-moon system. The rotation period of the planet is 2 days. The period of revolution of the moon around the planet is 42 days while that of the planet around the sun is 420 days. What is the length of the lunar cycle as seen from the planet? You can assume the direction of planetary rotation, planetary revolution and lunar revolution is the same.
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Source
USAAAO 2024 First Round, Question 16. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.