Astronomical concepts find mention in Vedic samhitās and Brāhmaṇas, which belong to a period earlier than 1500 BCE ([6], [7], [37], [39], [63]). Passages describing the sky, the Sun, Moon, stars and the planets, day and night, seasons and months, eclipses, spherical nature of the Earth etc., occur at many places. These are neither `systematic’, … Continue reading Essentials of Indian Astronomy: Concepts and Literature