Aryabhata (Sanskrit: आर्यभट, ISO: Āryabhaṭa) or Aryabhata I[3][4] (476–550 CE)[2][5] was the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the Āryabhaṭīya (which mentions that in 3600 Kali Yuga, 499 CE, he was 23 years old)[6] and the Arya-siddhanta.

Statue of Aryabhata at the IUCAA, Pune (although there is no historical record of his appearance).
Born476 CE
Kusumapura (Pataliputra) (present-day Patna, India)[1]
Died550 CE[2]
Academic background
InfluencesSurya Siddhanta
Academic work
EraGupta era
Main interestsMathematics, astronomy
Notable worksĀryabhaṭīya, Arya-siddhanta
Notable ideasExplanation of lunar eclipse and solar eclipse, rotation of Earth on its axis, reflection of light by moon, sinusoidal functions, solution of single variable quadratic equation, value of π correct to 4 decimal places, diameter of Earth, calculation of the length of sidereal year
InfluencedLalla, Bhaskara I, Brahmagupta, Varahamihira, Kerala school of astronomy and mathematics, Islamic Astronomy and Mathematics

For his explicit mention of the relativity of motion, he also qualifies as a major early physicist.[7]