Astrology and Numerology Just as astrology the planets and zodiac signs are connected to specific attributes within astrology, according to the teachings of numerology, certain numbers are associated with specific traits or themes. These numbers are used to offer insight on personality, future events, and even life's greater purpose. Numerology is the predictive science which uses numbers just as astrology uses the planets. The numbers have their own vibrations which produce various effects and influences on us.