Story
Nilakantha Somayaji of the Kerala school wrote the Tantrasangraha in 1501. He revised the model of the motion of Mercury and Venus, producing one of the most accurate planetary models before Kepler.
Key contributions
- Proposed a partly heliocentric model for the inner planets
- Wrote the Aryabhatiya-bhasya, a detailed commentary on Aryabhata
- Continued Madhava's work on infinite series