Glossary
Ruling planet: meaning in astrology
A sign's ruling planet is the planet traditionally associated with it, also called its lord. Mars rules Aries and Scorpio, Venus rules Taurus and Libra, Mercury rules Gemini and Virgo, the Moon rules Cancer, the Sun rules Leo, Jupiter rules Sagittarius and Pisces, and Saturn rules Capricorn and Aquarius.
Modern Western astrology adds Pluto to Scorpio, Uranus to Aquarius and Neptune to Pisces. Your chart ruler is the ruler of your rising sign.
Where does "Ruling planet" come up on this site?
It is used mainly in the calculators and the methodology page.
How we calculate
Is astrology a guarantee of what will happen?
No. These calculations locate celestial bodies; astrology is a reflection and timing tradition, not evidence of guaranteed health, financial or relationship outcomes.
How are these results calculated?
Positions come from Astronomy Engine, an open-source astronomy library, and are checked against Swiss Ephemeris in our methodology tests. Western readings use the tropical zodiac; Vedic readings subtract the Lahiri ayanamsa. Terms are defined in the glossary.
Next: compare your birth chart, see today's sky, or make a private vision board.