The Moon is the fastest-moving of the traditional planets, completing a full circuit of the zodiac in just under 28 days. In astrology, it represents everything that is changeable, receptive, and instinctive: the emotions, the habits, the automatic responses, and the deep patterns laid down in early childhood.
If the Sun is the conscious mind — the sovereign, the one who decides — then the Moon is the unconscious body of the psyche: the moods, the memories, the gut feelings, and the way you respond to the world before you have a chance to think about it. In traditional astrology, the Moon is called the Luminary of the Night, and it is the natural significator of mothers, the common people, the body, and anything that waxes and wanes.
The Moon rules Cancer, the sign of cardinal water, and is exalted in Taurus, the sign of fixed earth. It is in its detriment in Capricorn and its fall in Scorpio. These placements describe the Moon's essential dignities: where it is most comfortable, where it is most challenged, and why.
In a chart, the Moon describes:
- Emotional nature — how you feel, how you express feelings, and what you need to feel safe and secure.
- Habits and instincts — the automatic patterns of response that operate below conscious awareness.
- Mother and nurturing figures — in traditional astrology, the Moon signifies the mother, the caregiver, and the quality of nurturing you received.
- The body and its rhythms — the physical body, digestion, sleep, and the cyclical patterns of energy and rest.
The Moon's placement by sign describes the weather of your inner life: a Scorpio Moon feels everything intensely and privately, with a tendency toward emotional extremes; a Gemini Moon processes feelings through talk, curiosity, and mental restlessness. The Moon's placement by house describes the area of life where your emotional needs are most focused — and where you are most sensitive to the ebb and flow of circumstance.