The Surya Siddhanta is an ancient Indian astronomical text that is believed to have been composed between the 4th and 5th centuries CE. It is considered one of the most important and influential works in Indian astronomy.

Aryabhata is credited with authoring the Surya Siddhanta, which is considered one of the most important works in Indian astronomy.

The Surya Siddhanta presents a geocentric model of the solar system, in which the Earth is at the center and the Sun, Moon, and other planets revolve around it.

The term 'siddhanta' in Indian astronomy refers to a treatise or compendium that systematically presents astronomical knowledge, including theories, models, and computational methods.

The Brihat Samhita, written by Varāhamihira in the 6th century CE, is known for its detailed descriptions of planetary motions, eclipses, and other astronomical phenomena.

Aryabhata is often regarded as the father of Indian astronomy due to his significant contributions to the field, including the development of the Aryabhata system of astronomy.

The Siddhānta Shiromani, written by Bhaskara II in the 12th century CE, is notable for its discussion of the precession of the equinoxes, a phenomenon in which the orientation of the Earth's axis gradually changes over time.

In Indian astronomy, 'nakshatra' refers to a lunar mansion, which is a division of the ecliptic into 27 equal parts, each associated with a particular star or constellation.

The Jyotisha Vedanga, part of the four Vedangas (auxiliary texts to the Vedas), is known for its discussion of the zodiac and its signs, as well as other astronomical topics.

In Indian astronomy, 'panchanga' refers to an almanac that provides information about astronomical events, such as the positions of the Sun, Moon, and planets, as well as auspicious times for various activities.

The Surya Prajnapti, an ancient Indian astronomical text, is notable for its discussion of eclipses and their prediction, providing detailed methods for calculating the occurrence and duration of eclipses.

In Indian astronomy, 'yantra' refers to an astronomical instrument used for various purposes, such as measuring time, determining the positions of celestial bodies, and making astronomical observations.

The Vishnu Purana, an ancient Indian text, contains discussions on various topics, including astronomy. It provides insights into the Earth's shape and size, as well as the concept of the Earth's rotation.

In Indian astronomy, 'graha' refers to a planet, specifically those celestial bodies that are considered to have a significant influence on human affairs and are used in astrological calculations.

The Garuda Purana, an ancient Indian text, contains discussions on various topics, including astronomy. It provides insights into comets and meteors, their nature, and their significance in astronomical observations.