The Rigveda, one of the four Vedas, contains hymns that mention celestial bodies and astronomical phenomena.

Jantar Mantar is a collection of astronomical instruments built in five different cities across India.

The Samrat Yantra is a large sundial that can measure the altitude of celestial bodies with great accuracy.

The Jai Prakash Yantra is used to predict the occurrence of solar and lunar eclipses.

The Konark Sun Temple in Odisha is aligned with the rising sun on the day of the spring equinox, creating a spectacular visual effect.

The Saka Calendar is a solar calendar that is still used in some parts of India.

Aryabhata is credited with developing the concept of the zero in mathematics, which revolutionized mathematics.

Brihat Samhita is an encyclopedic work that covers a wide range of topics, including astronomy, astrology, and architecture.

Aryabhata proposed the heliocentric model of the solar system, which places the sun at the center of the solar system.

Jantar Mantar in Jaipur is one of the five observatories built by Maharaja Sawai Jai Singh II.

Brahmagupta developed the concept of the mean motion of the planets, which is the average speed of a planet's motion over a long period of time.

Siddhanta Shiromani is a comprehensive treatise on astronomy written by Bhaskara II.

Brahmagupta developed the concept of the precession of the equinoxes, which is the gradual shift in the position of the equinoxes over time.

Jantar Mantar in Ujjain is one of the five observatories built by Maharaja Sawai Jai Singh II.