Astrology is as old as Vedas themselves. The Vedas which are the sacred Hindu scriptures, embody eternal knowledge. Strict moral and spiritual practices along with the deep study are prerequisities to understand the essence of Vedas. To the uninitiated, the Vedas might appear as nothing more than ritualistic oblations to air, water and thunder etc. Deep truths, however begin to unfold to the true seeker as his search goes on.
In time of yore, sincere seekers of truth and knowledge in India used to spend years and years at the feet of their 'gurus', learning the meaning hidden in Vedas. In order to decipher what lies concealed in Vedas, a study of certain subjects is considered a prerequisite. These subjects are called the 'Vedangas' or the body organs of the Vedas. There are six such vedangas. They are :
(A) Shiksha : Which deals with the understanding of the Vedic 'Varanas', 'Swaras' and Mantras, and thus with the technique of correct pronunciation.
(B) Chhanda : Dealing with the appropriate lyrical utterance of the Vedic 'Suktas'.
(C) Vyakarana : Expouding the grammatical aspects of the language.
(D) Nirukta : Which explains the difficult words, 'padas' and 'mantras'.
(E) Kalpa : Dealing with the understanding of Sutras and the use of Mantras, hence concerned with the ritualistic aspects of the Vedas.
(F) Jyotisha or Astrology : Of the body called the Vedas, astrology represents the 'eyes' with its capacity to see the past, the present and the future. Astrology is considered as the most important of the Vedangas.