In astrology, a star sign, also known as a zodiac sign, is one of the twelve 30-degree sectors that make up Earths 360-degree orbit around the Sun. The Western zodiac originated in Babylonian astrology and was later influenced by the Hellenistic culture. Each sign was named after a constellation the sun annually moved through while crossing the sky. The twelve astrological signs are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. Your sun sign, also known as your star sign or birth sign, is determined by your date of birth and represents your core personality, sense of self, basic preferences, romantic compatibility, and ways in which you move through the world. While astrology is a complex study, the most fundamental principle of astrology centers on the twelve familiar star signs of the zodiac.