The Zodiac is a division of stars--the stars in the heavens divided into twelve main groups. Imaginary patterns are imposed upon various star patterns as an aid to remember the stars. In astrology, the Zodiac signs signify personality types for the people born under them. The Zodiac signs are determined by durations of time in the calendar. The twelve signs are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces.