The only exception is the Earth, which occupies the center of the chart as the reference point. The planets and the lights each represent an active force, or energy, in our lives. The sign in which a planet is placed indicates the manner in which that energy is expressed. The house placement denotes the planet's main field of action, the primary area of experience in which that planetary energy is expressed. The signs are the twelve 30-degree divisions of the circle of the Zodiac.
Signs are nothing more than modes or styles of expression.
Each sign has a planetary ruler whose energy matches the nature of the sign. Below are a few descriptive adjectives for each sign. Active, assertive, self-centered, naive, competitive, independent, autonomous, original, impulsive, courageous, straightforward, singleminded. Ruled by Mars. Ruled by Venus.