The Rigveda, one of the four Vedas, contains hymns and verses that mention astronomical observations and concepts.

Jyotishchakra represents the celestial sphere and is used for astrological calculations and predictions.

Ghati Yantra is a quadrant-like instrument used to measure the altitude of celestial bodies above the horizon.

Jantar Mantar is a collection of astronomical instruments built by Maharaja Jai Singh II in the 18th century.

Aryabhata proposed the heliocentric model, where the Earth rotates on its axis and revolves around the Sun.

Ursa Major, also known as the Great Bear, is associated with Vishnu and is called Saptarishi Mandala.

Surya Siddhanta is an astronomical treatise that provides information about the movement of celestial bodies and eclipses.

Man Mandir is an astronomical observatory built by Maharaja Jai Singh II in the 18th century.

Brahmagupta introduced the concept of the zero digit and developed methods for arithmetic operations involving zero.

Orion, also known as Mrigashira, is associated with Shiva and is considered a symbol of strength and power.

Yantra Sarvasva is a treatise on astronomical instruments and their applications.

Jantar Mantar is a collection of astronomical instruments built by Maharaja Jai Singh II in the 18th century.

Bhaskara II developed the concept of trigonometric functions and formulated various trigonometric identities.

Ursa Major, also known as the Great Bear, is associated with Brahma and is called Saptarishi Mandala.

Brihat Samhita is an encyclopedic work that covers various topics, including astronomy, astrology, and architecture.