There is much evidence suggesting that astrology has its origins in ancient times, long before recorded history, somewhere near the equator. At the equator, everything is “symmetrical,” astrologically speaking. Astrology at the equator acts like a celestial clock or pendulum, with the sun’s relationship to our position having perfect precision. This fascinating concept is explored further in The origins of astrology.

The sun’s role in the electromagnetic universe

Although we cannot see or feel it, we live in an electromagnetic universe. We are constantly immersed in electromagnetic frequencies, of which visible light – the only part we can see – makes up less than one percent.

The electromagnetic field is primarily created by earth’s magnetism combined with radiation from the sun and moon.

In astrology, the sun and moon are seen as opposites. The sun represents the masculine and the moon the feminine. The sun symbolizes our sense of self and significant aspects of our personality while the moon reflects our instinctual and fundamental emotional expressions.

The sun, moon and ascendant

What makes the sun sign feel incomplete at times is the influence of other factors, particularly the moon and the ascendant.

The moon governs how we express ourselves on an almost unconscious emotional level. However, we do not always act on our emotions, meaning the moon does not constantly influence us. As we age, we often rely less on our emotions and more on the energy of our sun sign.

For those familiar with astrology, our outward personality is governed by the ascendant, the easternmost point on the horizon at the time of birth. The ascendant plays a complementary and equally significant role in shaping our personality as our sun sign, reflecting how others perceive us. When you read about the zodiac sign of your ascendant, you will likely find that the description resonates with your personality, much like your sun sign does (here is how you find out about your ascendant).

Interpretation of the sun in astrology

As mentioned, the sun is the most significant celestial body in astrology. Thanks to popular culture and horoscope columns, the importance of the sun in shaping personality is well-known, even by those unfamiliar with astrology.

When reading about zodiac signs, what we are actually reading about is the sun’s position in a particular sign at birth. The sun represents our core self and life force, modified by the sign it occupied at birth.

In astrology, the sun also symbolizes the father figure – not the stern, authoritarian father represented by Saturn – but the father as a role model and leader. The sun also represents the hero who ventures into the world, wielding will and strength to overcome darkness. Spiritually, one might say that our soul descends into the body, equipped with unique powers, to embark on an adventure until the next reincarnation.

Frequently asked questions about the sun in astrology

Why is the sun considered an important planet in astrology?

The sun is one of the most important planets in astrology. It represents the spirit, ego and self-expression in everyday life of a person. The sun shows the truth of your path, self-esteem and identity, playing a central role in the natal chart.

What does the sun rule in astrology?

The sun rules the zodiac sign Leo, representing joy, creativity and leadership. It governs the fire element, embodying passion, warmth and energy. The sun’s expression in the birth chart reflects how a person interacts with society, their sense of authority and their ability to inspire others.

How does the sun’s energy differ across the zodiac signs?

The sun’s energy expresses differently in the twelve zodiac signs. For example, an Aries sun is bold and assertive, while a Pisces sun might shine with empathy and creativity. Understanding the sun’s placement in the chart provides a better understanding of your unique personality and path toward self-realization.

What happens if the sun is afflicted in a natal chart?

In conventional astrology, an afflicted sun in a natal chart (in difficult aspects with other planets) may manifest as low self-esteem, struggles with authority, or challenges in achieving one’s truth and purpose. Sunring astrology puts less emphasis on aspects, which you can read about in Aspects in astrology.

What does the sun show in Vedic astrology?

In Vedic astrology, the sun represents the soul, vitality and fatherly influence. It governs the right eye for men and the left eye for women, influencing health, spirit and one’s role in society. The sun is also associated with the principle of dharma, or living in alignment with one’s higher truth.

How does the sun’s placement in the houses affect its expression?

In conventional astrology, the sun’s placement in the twelve houses of the birth chart influences where its energy is most visible in a person’s life. For example, a sun in the first house often indicates strong self-expression, while in the tenth house, it highlights career and authority.

However, depending on which house system you use, the sun, like the other planets, may end up in different houses, making house systems a dubious tool. A more detailed explanation on why houses is an unreliable tool can be found here.

Why is the sun called the symbol of self-realization?

The sun symbolizes the journey toward self-realization and living in alignment with one’s true self. It encourages individuals to shine their unique light and discover their place in the solar system of life. The sun's placement in different zodiac signs influences people's personality.

How does a strong sun impact a person?

The sun is considered "strong" when it is positioned in Leo since the sun rules Leo. Typically for people born in Leo is a strong self-esteem.

How does the planet sun interact with other planets in a natal chart?

In conventional astrology, the sun’s aspects with other planets in a birth chart shape its expression. For instance, a harmonious aspect with Jupiter can enhance optimism and expansion, while challenging aspects with Saturn might create struggles with ego or authority. Sunring astrology places less emphasis on the sun's aspects with other planets since they have such small contribution to the ocean of electromagnetism that surrounds us.