Planets
The Sun
Tropical zodiac, Western astrology
The Sun is the centre of the chart, just as it is the centre of the solar system. It represents your core identity: who you are becoming, what gives you vitality, and where you want to shine. Think of it as the conscious sense of "this is me".
Cycle and speed
The Sun moves through the whole zodiac in one year, spending about 30 days in each sign. That is why your Sun sign is decided by your birthday. It never turns retrograde.
Rulership
The Sun rules Leo, the sign of warmth, creativity and self-expression. It is exalted in Aries, where its energy is direct and fresh, and it is traditionally weaker in Libra and Aquarius, where the focus moves away from the self towards balance or the group. Those are not flaws; they simply show where the Sun has to work harder to feel at home.
When it is strong
A well-expressed Sun feels like confidence without needing to prove anything. You know what matters to you, you act with purpose and you are generous to others. People often experience this as warmth or presence.
When it is stressed
When the Sun is under strain, identity can feel shaky or overly dependent on approval. You may swing between wanting recognition and fearing it, or push yourself to meet a standard that was never really yours. Pride and self-doubt can both be signs of the same wobble.
How to read it in your chart
- Sign: the style of your identity. A Sun in Taurus seeks steadiness; a Sun in Gemini seeks variety.
- House: the area of life where you most want to be seen and to contribute.
- Aspects: tight aspects to other planets show what supports or challenges your sense of self. The Moon connection matters especially, since it shows how your head and heart get along.
The Sun sign is only a starting point. It describes one voice in your chart, not the whole choir, so read it together with your Moon and Ascendant.