Modern Astrology


What Is Synastry?

March 13, 2023

Synastry is the astrology of relationships and compatibility. It is the study of the relationship between two individuals based on their birth charts. Synastry is a fascinating and complex subject that requires a deep understanding of astrology, but even beginners can learn the basics and gain insight into their relationships. In this article, we will explore the concept of synastry and how it can be applied in astrology.

What is Synastry?

Synastry is the comparison of two birth charts to determine the potential compatibility of a romantic or platonic relationship. Each birth chart represents a unique set of planetary placements, and when these charts are compared, we can see how the planets interact with each other. The goal of synastry is to identify the strengths and challenges in a relationship, as well as the potential for growth and transformation.

The Importance of Planetary Aspects

In synastry, the most important factor is the planetary aspects between the two birth charts. Aspects are the angles that the planets make to each other, and they have a significant impact on the nature of the relationship. There are both positive and challenging aspects, and each one contributes to the overall dynamic of the relationship.Positive aspects, such as the conjunction, sextile, and trine, indicate a harmonious flow of energy between the planets. When these aspects occur between two charts, the individuals are likely to share common interests and have an easy, comfortable rapport.Challenging aspects, such as the square and opposition, indicate tension and conflict between the planets. When these aspects occur between two charts, the individuals may struggle to understand each other or have difficulty finding common ground.Interpreting the aspects in a synastry chart is a complex process that requires an understanding of the individual planets and their meanings, as well as the dynamics of the relationship. Each aspect has its own unique qualities, and the way they interact with each other can have a significant impact on the relationship.For example, a conjunction between two people’s Venus planets may indicate a strong attraction and a shared love of beauty and pleasure. However, if this conjunction is in a challenging aspect with Saturn, there may be a fear of commitment or a sense of restriction in the relationship.

The Role of the Houses

In addition to the planetary aspects, the houses of the birth chart also play a role in synastry. Each house represents a different area of life, such as career, home, or relationships. When two charts are compared, the house placements of each individual can provide insight into how they relate to each other in specific areas.For example, if one person’s Venus planet falls in the other person’s 7th house of partnerships, there may be a strong connection and potential for a romantic relationship.

Should You Learn Synastry?

As an astrologer, understanding synastry is essential to providing accurate and insightful readings. As this is the study of the relationship between two individuals, it involves comparing the birth charts of both individuals to gain insights into the dynamics of their relationship.By studying synastry, astrologers can help clients understand their relationships better, including potential challenges and opportunities for growth. Synastry can reveal the strengths and weaknesses of a relationship, including compatibility in various areas such as communication, values, and emotional needs.Additionally, synastry can help astrologers identify potential conflicts and misunderstandings between two people. For example, if one person’s Mars (planet of action) is in a difficult aspect to another person’s Venus (planet of love), it could indicate conflicts in the way they express affection and desire.Furthermore, studying synastry can help astrologers provide guidance on how to navigate challenges within a relationship. For example, if one person’s Moon (planet of emotions) is in a harmonious aspect to another person’s Sun (planet of self-expression), it could indicate a deep emotional connection that could help them work through any challenges that may arise.Overall, understanding synastry is crucial for astrologers to provide accurate and meaningful insights into the dynamics of a relationship. By gaining a deeper understanding of the astrological influences at play in a relationship, astrologers can provide valuable guidance to help clients navigate challenges and build stronger, more fulfilling relationships.


Synastry is a fascinating and complex subject that can provide valuable insight into relationships. By comparing two birth charts and interpreting the planetary aspects and house placements, astrologers can gain a deeper understanding of the potential strengths and challenges in a relationship.Whether you are looking to gain insight into a romantic partnership or a platonic friendship, synastry can offer a valuable tool for self-discovery and growth.You can study Synastry online with Modern Astrology. Find out more HERE.

Related Course :: Synastry

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