The zodiac is a circular area of the celestial sphere. The zodiac is nowadays divided into thirteen constellations corresponding to the twelve signs. Zodiac comes from the Greek word "zodiakos", "circle of little animals". This name comes from the fact that all the constellations of the Zodiac (except Libra, formerly a part of Scorpio) depict living creatures. Zodiac signs are known by astrologers but the Zodiac is the name of the zone of heaven located around the ecliptic, which are observed movements of the Sun and planets. The trajectory of the Sun on the celestial sphere is the ecliptic. The zodiac is traditionally divided into twelve constellations corresponding to the twelve signs. In fact, the ecliptic passes through thirteen constellations in the sky but one of them, Ophiuchus (Serpent), is not part of the traditional Zodiac.
These constellations in the zodiac are: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Ophiuchus (or Ophiuchus), Sagittarius, Capricorn, Aquarius and Pisces. In Western astrology, date of birth is the starting point of our lives. This starting point corresponds to an image of the planets compared to the 12 zodiac constellations. This position provides information to analyze or predict human events, collective or individual. A survey conducted in North America and in Britain indicates that one in four (25% of people) think that "the positions of stars and planets can affect a person's life."