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The Sun in Astrology

The Sun in Astrology

Planets on strings next to each other with a colorful galaxy background and mystical puppet masters on each end.

Popular Astrology

Your birth sign is your Sun sign. Popular astrology is Sun sign astrology because it is based on the sign the Sun was traveling through when you were born. With this extra focus on Sun signs through pop astrology, the internet, and horoscopes included in most major publications, it is easy to think Sun Sign Astrology is all that astrology is. But that is not accurate. 

The Sun is super important in astrology, but there is so much more. A person’s horoscope is a visual circle representing the sky at the exact time you were born and plots all the planets like a snapshot of the sky. To consider the Sun, we must also consider the entire chart. Below I will go through each of the planets and their role in describing our character and personality.

The Lunar Phase is based on the Sun and Moon

The relationship between the Moon and Sun is one of the most important parts of your chart. We see this cycle every month as the Sun shines light to the Moon, who reflects it to us, from dark to bright and dark again every month. The lunar phases we see at night throughout the month are based on how much light the Moon is receiving from the Sun. 

The Lunar phase we were born under is descriptive of our nature and you can read more about that here.

The Personal Planets

The Sun has relationships with the other planets in your chart. There are personal planets, Mercury, Venus, and Mars, which are very important when describing the unique energy of an individual chart. The two lights, Sun and Moon, are often lumped together and categorized as part of the seven personal planets. This is for ease of communication in the common language between astrologers. 

The Sun, Moon, Mercury, Venus,  Mars, Jupiter, and Saturn make up the personal planets. These seven bodies are the starting point astrologers look at to get a comprehensive picture of an individual. The descriptions of these seven bodies alone gives the primary information astrologers need to read the language of your horoscope birth chart.

Between the seven bodies, we learn about character, personality, identity, vitality, emotions, instincts, communication style, relationship style, how one takes action in the world, opportunities, luck, spirituality, beliefs, challenges, discipline, and hardships.

The Outer Planets

The outer planets are the slow moving planets Pluto, Uranus, and Neptune. They can represent important aspects of character and personality depending on what, and if, a relationship with a personal planet exists mathematically between them.

An astrology consultation takes all of the planetary bodies into consideration based on what sign they were traveling through and the relationships they make at the time of your birth.

The Personal Planets and the Sun

It’s important to understand that a personal horoscope, or birth chart, is more than the Sun you read about in an online horoscope. With that understanding, we can move along and focus on the Sun in your chart and how it expresses your core nature in dynamic relationship with the other personal planets.

The Sun does not express character by itself. The personal planets operate like any group, and that means there are group dynamics. Group dynamics are indicated in your horoscope by where the personal planets are located on the wheel, through what sign they are expressing, and if they have a mathematical relationship called an aspect.

Components of a Chart

An astrology chart, or horoscope, or birth chart is comprised of four basic parts:

  1. The wheel divided by twelve. Each of the twelve slices are called houses and they each represent domains of life. It’s important to know which domain of life a personal planet is connected to in your chart.
  2. The Planets, which represent a particular type of energy described below. 
  3. The Sign a planet is expressing through.
  4. The aspects, or relationships the personal planets make with each other.

Below is a brief description of the energy each of the personal planets represents in your horoscope.

The Sun is the Giver of Light and Life

The Sun takes a significant role in astrology because it is the giver of life and light in our world. Without the Sun, there would not be life on earth as we know it. 

In our horoscope, the Sun represents creativity, warmth, ego, personality, character, and our core essence.  It represents our identity, vitality and charisma.  When we look at energy levels, or vitality, we always look at the Sun.

The Sun does not express its energy in isolation. The synthesis of all the planets work together. Some planetary relationships are more important than others and this differs from one persons chart to another’s. In order to truly understand the unique and dynamic blend of your chart, you have to study astrology or consult an astrologer.


Knowing that the Moon is the other light, and the relationship between the two lights is super important, means that knowing your Moon sign is probably just as important as knowing your Sun sign. The Moon complements your Sun as the receptive nature, your instincts, and describes how you go about getting your emotional and security needs met.

When these two lights are in signs that work well together, there is an ease and flow between your ego and identity needs, and your emotional and security needs. When they are in signs that operate in different manners, there can be greater lessons to be learned in this lifetime about congruency between emotional security and ego expression.


The personality and character is expressed through our communication style, both verbal and non-verbal. That is reflected by Mercury in your chart. Mercury can be in a sign that flows well with your Sun sign, is totally different than your Sun sign, or has an incongruent expression that can cause you difficulty at times.


The way you relate to others is the domain of Venus. When looking at your personal horoscope, the question to ask is how your core identity and personality gels with the filter (sign) that Venus is expressing your relationship style through. You can experience an ease and flow in relating with others, a feeling that your relating style is out of sync with your personality, or that there are challenges at times to relate authentically.


The way you physically, emotionally, and mentally take action in the world if reflected by Mars. If your style of action is in sync with your Sun, you feel vitality, energy, and drive flow easily through you. If the sign Mars is expressing energy through is out of sync with the Sun, you could run out of steam when you need energy, or find it challenging to get your action rhythm to sync up with your basic needs.


Jupiter tends to show the path to opportunities and where you find meaning and inspiration in life. Like all the planets, where Jupiter is and the sign it is expressing through gives individualized information on you. How Jupiter synthesizes with the other bodies will show you the resources most likely available to you to overcome challenges and for how to grow and expand what you want in life.


Saturn reflects where we find structure, stability, and discipline in life. Without these qualities we would be boundary less, not knowing when to stop, when enough is enough, or even when we have achieved something. Saturn provides the end, the form, and represents time in our chart.

When Saturn is in sync with planets, it indicates healthy structure and realism. When Saturn is out of sync, it may be harder to move forward in particular areas of life. Saturn can also indicate where there are challenges, and how great those challenges may be.