Vedanga Jyotisha is one of the earliest texts about Jyotisha field within the six Vedangas, it is about astronomy and time keeping for Vedic rituals, and has nothing to do with prophecy or astrology.
Historical evidence suggests that astrology arrived in the Indian subcontinent from Greece, after the arrival of Alexander the Great, and it post-dates the Vedic period. The zodiac signs for the Greek astrology and Hindu astrology are almost identical.
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