Jyotish Kalpa Niruktam cha / SIksha Vyakaranam Thadha– The Mighty Hindu Astro Physics is foremost amongst the Auxiliary Sciences. Not only Astrology, It consists of Vedic Astronomy, Vedic Mathematics, Astro Meteorology, Astro Gemology et al, Jyoti sastram aneka bheda Vishayam / Skandastraydhishtitam !