What were the major advancements made in the field of science and technology in ancient India?

The ancient India promoted scientific learning as evidenced by repository of literature and noted experts present. Advancements in Science & Technology in Ancient India a Measurement & Planning - Town planning in Harappan sites - Sulbasutri talk of measurement for sacrificial altars b Astronomy - Significant for astrology & zodiac signs - Veda texts for auspicious period - Aryabhatta on planetary motion, notation of earth, solar & lunar eclipse - Heliocentric Theory in Surya Siddhanta of Varahamihira - Brahmagwpta on astronomical elements in Chandrashodya c Medicine - Sushruta Samhita on hygiene - Dhamvantari collection of flora & fauna - Charaka samhita for treatment d Mathematics - Zero by Aryabhatta - Lilavati by Bhaskara II for higher order numbers e Chemistry - Rasayanarada by Nagarjuna - Varahamihira mixed metals (Mercury, silver) for creating medicines Even though this science & technology has based on religion, it helped in advanced learning and use in daily life like gupta yatra etc.