Originally posted on Vikas Acharya:
Jyotish is the oldest system of astrology in the world. It’s derived
from the Sanskrit word “jyoti” which means light. As the pure
light of scientific knowledge, the word Jyotish implies studying a
person’s character, health, habits and even the future on the
basis of his or her birth chart. Jyotish is practiced by a skilled astrologer by calculating the positions of the planets and other celestial bodies with regard to a person’s birth or happening of an event.