Aryabhata's Astronomy
Revolutionary Indian mathematician-astronomer of the 5th century CE.
Overview
Aryabhata (476–550 CE) wrote the Aryabhatiya, proposing Earth's rotation, accurate π, sine tables, and planetary periods that advanced Indian astronomy.
Why It Matters
Aryabhata demonstrated that non-European traditions made fundamental contributions to mathematics and astronomy.
Scientific Explanation
Aryabhata calculated Earth's circumference as 39,968 km (modern: 40,075 km). He explained day/night via Earth's rotation on its axis — centuries before widespread acceptance in Europe. His sine tables enabled precise planetary positions.
Historical Background
Worked in Pataliputra (modern Patna). Aryabhatiya composed at age 23. Influenced Islamic and later European astronomy through translation networks.
Visual Explanation
Compare Aryabhata's Earth circumference calculation to Eratosthenes' — independent convergent genius.
Key Discoveries
- ✦ Earth's rotation explains apparent stellar motion
- ✦ Accurate value of π (3.1416)
- ✦ Sine tables for astronomical calculation
- ✦ Heliocentric-like planetary models debated by scholars
Important Astronomers
Reflection Prompt
Scientific truth crosses cultures. Who gets remembered in your astronomy textbooks?
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