Aryabhata is widely regarded as the father of Indian astronomy due to his significant contributions to the field.

Aryabhata proposed the heliocentric model of the solar system, which places the Sun at the center and the Earth and other planets revolving around it.

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

Varāhamihira developed the concept of the zodiac and the nakshatras, which are important in Indian astrology.

Surya Siddhanta is an ancient Indian astronomical text that contains information about eclipses, planetary motions, and constellations.

Aryabhata calculated the value of pi to four decimal places, which is a remarkable achievement for his time.

Vikram Samvat is an ancient Indian calendar that is based on the lunar cycle.

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

Astrolabe is an ancient Indian astronomical instrument used to measure the altitude of celestial objects.

Varāhamihira developed the concept of the nine planets, which includes the Sun and the Moon.

Brihat Samhita is an ancient Indian astronomical text that contains information about comets and meteors.

Aryabhata developed the concept of the Earth's rotation on its axis, which was a revolutionary idea for his time.

Sundial is an ancient Indian astronomical instrument used to measure the time of day.

Aryabhata developed the concept of the Earth's revolution around the Sun, which was a revolutionary idea for his time.

Surya Siddhanta is an ancient Indian astronomical text that contains information about the constellations and their significance.