Aryabhata, a renowned Indian astronomer and mathematician, proposed the heliocentric model in his treatise, the Aryabhatiya, around the 5th century CE.

Jantar Mantar is a collection of architectural astronomical instruments built by Maharaja Jai Singh II in the 18th century. It consists of several structures used for observing celestial bodies and measuring time.

Bhaskara II, also known as Bhaskaracharya, made significant contributions to trigonometry and is credited with developing the sine function.

Surya Siddhanta is an ancient Indian astronomical text that provides detailed descriptions of astronomical phenomena, including the movements of celestial bodies, eclipses, and planetary positions.

Brahmagupta, a renowned Indian astronomer and mathematician, is credited with developing the concept of zero and introducing it to the world in the 7th century CE.

The quadrant is an ancient Indian astronomical instrument used to measure the altitude of celestial bodies above the horizon.

Varahamihira, also known as Varaha, is considered one of the greatest astrologers of all time and made significant contributions to the field of astrology.

Yantra Sarvasva is an ancient Indian astronomical text that provides detailed descriptions of various astronomical instruments and their uses.

Vikramaditya, an Indian king and patron of the arts and sciences, is credited with developing the Vikrama Samvat calendar, which is still widely used in India today.

The sundial is an ancient Indian astronomical instrument used to measure the time of day and night by observing the position of the sun.

Aryabhata, a renowned Indian astronomer and mathematician, is considered one of the greatest astronomers of all time and made significant contributions to the field of astronomy.

The armillary sphere is an ancient Indian astronomical instrument used to represent the celestial sphere and study the movements of celestial bodies.

Aryabhata, a renowned Indian astronomer and mathematician, is considered one of the greatest mathematicians of all time and made significant contributions to the field of mathematics.

Surya Siddhanta is an ancient Indian astronomical text that provides detailed descriptions of various astronomical phenomena and calculations, including eclipses and planetary positions.

Aryabhata, a renowned Indian astronomer and mathematician, is considered one of the greatest astronomers of all time and made significant contributions to the field of astronomy.