The Science of the Heavens, Astronomy, the Wisdom of the Heavens, Astrology & Ganita, the Science of Maths were integrated as the Science of the Luminaries, Jyotish. That which is luminous is Jyothi and Jyotish was referred to by Bhagavan Varaha as the Eyes of the Veda Purusha, Jyothisham Chakshushee cha !