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Which Gupta-era astronomer said the Moon shines by reflected sunlight?

AVarahamihira
BVatsyayana
CKalidasa
DAryabhata
Answer & Solution
Correct answer: D. Aryabhata
1. Aryabhata mentioned that reflected sunlight causes the Moon to shine. 2. He also suggested that the Earth is a sphere. 3. Varahamihira approximated astronomical values, but this claim is Aryabhata's; Kalidasa and Vatsyayana were not astronomers. _Source: Wikipedia, Gupta Empire, Astronomy_
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