Ancient Indian astronomers were primarily interested in understanding the movement of celestial bodies, such as the sun, moon, and planets, and how they influenced various aspects of life on Earth.

The Rigveda, one of the four Vedas, contains hymns and verses that mention astronomical observations and celestial bodies, making it the earliest known astronomical treatise in ancient India.

Astronomy played a significant role in various aspects of ancient Indian society, including religious ceremonies, agricultural practices, navigation, and seafaring.

The armillary sphere was a popular astronomical instrument used by ancient Indian astronomers to study the movement of celestial bodies and understand their positions in the sky.

Ancient Indian astronomers focused on predicting eclipses and planetary conjunctions, as these events were considered significant in religious and astrological contexts.

Aryabhata, a renowned ancient Indian astronomer, is credited with developing the concept of the precession of the equinoxes, which refers to the gradual shift in the position of the equinoxes over time.

Ancient Indian astronomers were primarily interested in understanding the influence of planetary movements on human affairs, such as their impact on weather, agriculture, and astrology.

The Surya Siddhanta is an ancient Indian astronomical text that contains detailed observations and records of celestial events, including the movement of planets, eclipses, and solstices.

Astronomical charts and diagrams were primarily created to illustrate the positions of celestial bodies in the sky, helping astronomers visualize their movements and relationships.

Bhaskara II, a renowned ancient Indian astronomer, made significant contributions to the field of trigonometry, including the development of trigonometric formulas and the concept of sine.

Ancient Indian astronomers primarily used the method of lunar distances to measure the distance between celestial bodies, which involved measuring the angular distance between the moon and a celestial body.

Aryabhata developed a model of the universe that included the concept of elliptical orbits, challenging the traditional view of circular orbits held by ancient astronomers.

Astronomical observations were primarily used in ancient Indian religious rituals to determine the auspicious time for ceremonies, festivals, and other important events.

Varāhamihira, a renowned ancient Indian astronomer, made significant contributions to the field of astrology, including the development of astrological charts and the study of planetary influences.

Ancient Indian astronomers focused on identifying constellations and asterisms in the night sky, which were used for navigation, timekeeping, and religious purposes.