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MCQIntermediateSolar System & Planetary Science
USAAAO — 2025 First Round
Question 23
The Earth orbits the Sun with orbital eccentricity e = 0.0167. What percent more total solar irradiance does the Earth receive at perihelion compared to aphelion?
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Source
USAAAO 2025 First Round, Question 23. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.