What is Synastry?

What is Synastry?
Photo by Leah Newhouse
⋅ ⋅ ⋅

Synastry is the art of comparing two birth charts to understand the dynamics of a relationship. In astrology, it reveals how two individuals connect on emotional, mental, and spiritual levels by analyzing planetary aspects, house overlays, and compatibility factors. Whether in love, friendship, or business, synastry helps uncover strengths, challenges, and karmic ties in relationships. This guide will break down the key elements of synastry and how to interpret them.

How to do a Synastry analysis

To analyze synastry, start by overlaying both charts to identify hard aspects. These interactions create dynamic interactions that are strongly experienced in relationships. Squares introduce stimulating challenges that encourage growth, while oppositions highlight contrasts that can generate both magnetism and complexity. Conjunctions amplify planetary influences, shaping key relational themes. Examining these aspects reveals the fundamental dynamics at play.

What the planets mean in Synastry

In synastry, the Sun shapes identity dynamics, while the Moon influences emotional responses. Mercury affects communication styles, and Venus governs love expression. Mars drives passion and motivation. The Ascendant/​Descendant (AC/​DC) axis highlights relational pull, while the Midheaven/​IC (MC/​IC) axis reflects public and private life balance. Jupiter expands experiences, and Saturn establishes stability. Uranus introduces unpredictability and change, Neptune enhances dreams or illusions, and Pluto deepens intensity and transformation.

Other compatibility analysis techniques

While synastry is a powerful tool for relationship analysis, it’s just one of many techniques in astrology. Composite charts merge two birth charts into a single chart, revealing the relationship’s overall purpose and dynamics. Davison charts use a midpoint approach to create a shared chart based on time and space. Progressions and transits show how a relationship evolves over time. By combining these methods, astrologers gain a deeper, more nuanced understanding of compatibility.

Synastry offers deep insight into relationship dynamics by analyzing planetary connections between two birth charts. It reveals how individuals interact, where harmony flows, and where challenges arise. While this article provides an overview, specific aspects shape each connection uniquely. Subsequent articles will explore these aspects in depth, helping you interpret your own relationships with greater clarity. Understanding synastry is a powerful step toward self-awareness and deeper connections.

You may also like

The Synastry of the Moon and Venus: Soothing Love

The Synastry of the Moon and Venus: Soothing Love

When the Moon and Venus connect in synastry, emotional depth meets romantic charm, creating a bond of warmth, affection, and mutual appreciation. The Moon represents deep feelings, intuition, and emotional needs, while Venus signifies love, attraction, and beauty. Together, they shape how two people nurture, comfort, and express affection toward each other. This article explores the dynamics of Moon-Venus synastry, revealing its role in romantic harmony, emotional fulfillment, and long-term compatibility.

Breaking Ground: Uranus Synastry with the Midheaven/Nadir Axis

Breaking Ground: Uranus Synastry with the Midheaven/Nadir Axis

When Uranus meets the Midheaven/Nadir axis in synastry, the connection can feel revolutionary and destabilizing all at once. This axis represents one’s public path and private roots, while Uranus symbolizes upheaval and awakening. Their meeting in synastry suggests that the relationship could reshape how one sees their purpose, career, home life, or legacy—often in sudden, unexpected ways.

Jupiter-Mars Synastry: The Spark of Growth and Drive

Jupiter-Mars Synastry: The Spark of Growth and Drive

In synastry, the interaction between one person’s Jupiter and another’s Mars creates a powerful dynamic of motivation, adventure, and potential for explosive passion. This connection blends the planet of expansion and belief with the planet of drive and action. When well-aspected, it brings growth through action. When poorly handled, it can lead to impatience or conflict. Understanding both energies is key to harnessing their synergy.

The Dynamics Between the Moon and Uranus in Synastry: Unconventional Attachment

The Dynamics Between the Moon and Uranus in Synastry: Unconventional Attachment

In astrology, the Moon and Uranus represent two very different, yet complementary, energies in synastry. The Moon governs emotions, instinctual responses, and the need for emotional security. Uranus, on the other hand, is associated with sudden changes, innovation, freedom, and rebellion. When these two planets interact in a relationship, it creates an exciting, unpredictable dynamic that can bring both emotional growth and disruption.

How compatible are you? 💕

Find out with Lani app