List of Major Indian Astronomers

List of Major Indian Astronomers

S. No.	Astronomer	Period	Major Contributions / Achievements
1	Lagadha	Ancient India (date uncertain)	Associated with the Vedanga Jyotisha, an early Indian text concerned with calendrical calculations and astronomical observations.
2	Aryabhata	476–550 CE (approx.)	Explained that Earth rotates on its axis, developed astronomical calculation methods and gave mathematical explanations of solar and lunar eclipses.
3	Varahamihira	c. 505–587 CE	Authored the Brihat Samhita and Panchasiddhantika, the latter summarising several astronomical traditions.
4	Brahmagupta	598–668 CE (approx.)	Advanced mathematical astronomy, including methods for calculating planetary positions and predicting eclipses.
5	Bhaskara I	7th century CE	Wrote important commentaries on Aryabhata's work and contributed to trigonometric calculations used in astronomy.
6	Bhaskara II (Bhaskaracharya)	1114–1185 CE	Authored Siddhanta Shiromani, which covered planetary mathematics, astronomical calculations and eclipse prediction.
7	Madhava of Sangamagrama	c. 1340–1425	Founder of the Kerala school of astronomy and mathematics, known for infinite-series methods that supported precise astronomical calculations.
8	Nilakantha Somayaji	1444–1544	Developed a refined planetary model in the Tantrasangraha and contributed to mathematical astronomy.
9	Jai Singh II	1688–1743	Commissioned the Jantar Mantar observatories in several Indian cities to measure celestial positions and improve astronomical observations.
10	Samanta Chandra Sekhar	1835–1904	Indian astronomer from Odisha who made astronomical calculations and observations using traditional instruments; authored Siddhanta Darpana.
11	Meghnad Saha	1893–1956	Developed the Saha ionisation equation, fundamental to understanding stellar atmospheres and the classification of stars.
12	M. K. Vainu Bappu	1927–1982	Made major contributions to stellar astronomy and helped develop modern astronomical observatories in India. The Bappu–Bok–Newkirk relationship is named partly after him.
13	Jayant Narlikar	1938–2025	Known for research in cosmology, gravitation and alternative cosmological theories, including work with Fred Hoyle.
14	Govind Swarup	1929–2020	Pioneer of radio astronomy in India and a key figure in the development of the Ooty Radio Telescope and Giant Metrewave Radio Telescope.
15	Subrahmanyan Chandrasekhar	1910–1995	Indian-born astrophysicist who developed the Chandrasekhar limit for white dwarfs and received the 1983 Nobel Prize in Physics.
16	Vikram Sarabhai	1919–1971	Physicist who researched cosmic rays and helped establish India's modern space research programme.
17	Homi Jehangir Bhabha	1909–1966	Theoretical physicist whose research included cosmic rays; also played a major role in establishing India's scientific research institutions.
18	Jayant Vishnu Narlikar's contemporary research collaborators and later Indian cosmologists	20th–21st centuries	Indian researchers have contributed to galaxy formation, gravitational physics, cosmology and the study of the large-scale structure of the universe.
19	Thanu Padmanabhan	1957–2021	Theoretical physicist and cosmologist whose work covered gravitation, dark energy, quantum gravity and the large-scale structure of the universe.
20	Shri Kulkarni	1956–present	Indian-born astronomer known for research on pulsars, gamma-ray bursts, brown dwarfs and transient astronomical phenomena.
21	Somak Raychaudhury	1962–present	Indian astrophysicist known for research on galaxies, galaxy clusters and the large-scale structure of the universe.
22	Shrinivas Kulkarni	1956–present	Astrophysicist known for discoveries and research involving millisecond pulsars, gamma-ray bursts and stellar transients.
23	Ajit Kembhavi	1948–present	Indian astrophysicist whose research has included active galactic nuclei, quasars and extragalactic astronomy.
24	Dipankar Bhattacharya	Contemporary	Indian astrophysicist known for research involving pulsars, neutron stars, X-ray astronomy and high-energy astrophysics.
25	Archana Sharma	Contemporary	Indian scientist associated with high-energy physics research; included here only as a broader example of India's scientific community, not specifically as an astronomer.

Notes:

Ancient and medieval astronomers often combined astronomy with mathematics, calendar-making and astrology, reflecting the intellectual traditions of their time.
Modern astronomy includes observational astronomy, astrophysics, cosmology, radio astronomy and space-based astronomical research.
Subrahmanyan Chandrasekhar was born in Lahore, then part of British India, and later worked primarily in the United States.
Vikram Sarabhai was primarily a physicist and space-programme pioneer rather than a professional observational astronomer.
Historical dates and biographical details should be checked against academic sources before formal publication.

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List of Major Indian Astronomers

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