The zodiac is a 30‑degree band encircling the ecliptic, the apparent path of the Sun across the sky. Historically, Babylonian astronomers divided this circle into twelve equal sections, each later linked to mythic symbols that evolved into today’s Aries through Pisces. Modern astronomy treats the zodiac as a coordinate system, while astrology interprets the Sun’s position in a sign as a shorthand for personality tendencies.
Astrologers assign each sign a set of traits—such as confidence for Leo or adaptability for Gemini—by aggregating centuries of anecdotal observation and symbolic association. Psychological research shows that vague, positively‑framed statements can feel personally accurate, a phenomenon known as the Barnum effect. Consequently, while zodiac descriptions can serve as a reflective prompt, they do not constitute measurable predictors of behavior.