Synastry
Compare two charts to understand relationship compatibility.
Synastry is the astrological method of comparing two natal charts to explore the dynamics of a relationship. By overlaying one person's planets onto the other's houses and examining the inter-chart aspects, you can identify where a partnership flows easily, where it generates friction, and where both individuals have the strongest potential for mutual growth.
The technique works for any kind of relationship -- romantic partnerships, friendships, family bonds, or professional collaborations. What matters is how the two symbolic maps interact. When one person's Venus lands in another's seventh house, for instance, the relational field naturally gravitates toward affection and partnership themes. When Mars in one chart squares Saturn in the other, the pair will likely encounter recurring tension around autonomy, timing, and control -- tension that, when worked with consciously, can become a powerful engine for maturity.
This section provides house overlay guides (what happens when each of your partner's planets falls in each of your houses), aspect-by-aspect analyses (conjunction through opposition for every major planet pair), and specialized articles on outer-planet contacts, Lilith aspects, and nodal connections. The goal is always the same: to move from "why does this person push my buttons?" to "how can we use this dynamic constructively?"
Browse Sections
Sun Aspects
Moon Aspects
Mercury Aspects
Venus Aspects
Mars Aspects
Jupiter Aspects
Saturn Aspects
Outer Planet Aspects
Lilith Aspects
Vertex
Juno
House Overlays
How one person's planets fall in the other's houses.
Aspects
Inter-chart aspects that define the dynamic between two people.
Cusp-Planet Aspects
Asteroids
Ascendant Aspects
Asteroid Aspects
Chiron Aspects
Midheaven Aspects
Midpoints
Neptune Aspects
Node Aspects
Pluto Aspects
Sign Compatibility
Uranus Aspects
Articles
Showing 48 of 624 articles
Introduction to Synastry
Learn the foundations of synastry: how comparing two birth charts reveals relational dynamics, growth edges, and patterns of interaction between two...
Challenging Synastry Patterns: What to Be Aware Of
Learn which synastry patterns require extra awareness and how to work with challenging planetary dynamics constructively in relationships.
How to Read a Synastry Chart: Step-by-Step
A practical step-by-step guide for reading synastry charts, from assessing individual charts to identifying the most significant interaspects.
Synastry Compatibility Score: The Discepolo Method
Calculate your synastry compatibility score with the Discepolo method. A step-by-step, research-backed scoring system for relationship astrology.
The Most Powerful Synastry Aspects: Which Connections Matter Most
Explore which synastry aspects experienced astrologers consider most significant and why certain planetary connections carry more weight than others.
Dynamic Aspects in Synastry: Squares and Oppositions
Statistical research on over 2,000 couples reveals that Sun squares and oppositions appear most frequently in lasting relationships. Explore the evidence.
Synastry Sun-Sun Aspects
Discover the meaning of Sun-Sun aspects in synastry, revealing how two people's core identities and life purposes interact and harmonize.
Synastry Sun-Moon Aspects
Learn about Sun-Moon aspects in synastry, representing the powerful connection between one person's identity and another's emotional needs.
Synastry Sun-Mercury Aspects
Explore Sun-Mercury aspects in synastry, reflecting how identity and communication intersect between two people and how the relationship can grow...
Synastry Sun-Venus Aspects
Explore Sun-Venus aspects in synastry: how identity and appreciation interact between partners, creating dynamics of attraction, values alignment, and...
Synastry Sun-Mars Aspects
Explore Sun-Mars aspects in synastry and how identity and drive interact between partners, shaping motivation, assertion, and the energy of the...
Synastry Sun-Jupiter Aspects
Explore the expansive dynamic of Sun-Jupiter aspects in synastry: how identity meets vision, and how mutual encouragement can become a catalyst for...
Synastry Sun-Saturn Aspects
Explore Sun-Saturn aspects in synastry: how identity and structure shape each other in relationships, building depth, responsibility, and lasting...
Synastry Moon-Moon Aspects
Explore Moon-Moon aspects in synastry, reflecting how two people interact emotionally, share instincts, and create a sense of home together.
Synastry Moon-Mercury Aspects
Explore Moon-Mercury aspects in synastry, where one person's emotional nature meets another's communication style, shaping how feelings are expressed...
Synastry Moon-Venus Aspects
Explore how Moon-Venus aspects in synastry shape emotional attunement, affection styles, and relational growth between two people.
Synastry Moon-Mars Aspects
Explore the passionate and dynamic nature of Moon-Mars aspects in synastry, where emotional needs meet assertive drive and energy.
Synastry Moon-Jupiter Aspects
Explore Moon-Jupiter aspects in synastry, how they shape emotional expansiveness between partners, create a climate of generosity and trust, and invite...
Synastry Moon-Saturn Aspects
Explore Moon-Saturn aspects in synastry: how emotional needs and structure interact in relationships, with integration practices for lasting growth.
Synastry Moon-Sun Aspects
Explore Moon-Sun aspects in synastry, reflecting how emotional instincts and nurturing connect with identity and self-expression in relationships.
Synastry Mercury-Sun Aspects
Explore Mercury-Sun aspects in synastry: how communication and intellect connect with identity and core self-expression in relationships.
Synastry Mercury-Moon Aspects
Explore Mercury-Moon aspects in synastry, reflecting how intellect and communication connect with emotions and emotional needs in relationships.
Synastry Mercury-Venus Aspects
Explore Mercury-Venus aspects in synastry, reflecting how communication and intellect connect with love, values, and aesthetic appreciation in...
Synastry Mercury-Mars Aspects
Explore Mercury-Mars aspects in synastry, reflecting how communication and intellect connect with drive, passion, and assertiveness in relationships.
Synastry Mercury-Jupiter Aspects
Explore Mercury-Jupiter aspects in synastry, reflecting how communication and intellect connect with wisdom, expansion, and philosophical understanding...
Synastry Mercury-Mercury Aspects
Explore Mercury-Mercury aspects in synastry to understand how two people communicate, think, and exchange ideas within a relationship.
Synastry Mercury-Saturn Aspects
Explore Mercury-Saturn aspects in synastry, reflecting how communication and intellect connect with structure, discipline, and maturity in relationships.
Synastry Mercury-Uranus Aspects
Explore Mercury-Uranus aspects in synastry, reflecting how communication and intellect connect with originality, rebellion, and **breakthrough...
Synastry Mercury-Neptune Aspects
Explore Mercury-Neptune aspects in synastry, reflecting how communication and intellect connect with imagination, intuition, and symbolic knowing...
Synastry Mercury-Pluto Aspects
Explore Mercury-Pluto aspects in synastry, reflecting how communication and intellect connect with depth, power, and psychological transformation in...
Synastry Mercury-Chiron Aspects
Explore Mercury-Chiron aspects in synastry, reflecting how communication and intellect connect with vulnerability, deep learning, and wisdom in...
Synastry Venus-Venus Aspects
Explore how Venus-Venus aspects in synastry illuminate the way two people's values, aesthetics, and love languages meet, complement, and challenge each...
Synastry Venus-Mars Aspects
Explore the dynamic interplay of Venus and Mars in synastry : how desire, attraction, and relational learning shape romantic connection across...
Synastry Venus-Jupiter Aspects
Explore Venus-Jupiter aspects in synastry: how love meets expansion, the archetypal meaning, relational patterns, resources, growth edges, and daily...
Synastry Venus-Saturn Aspects
Explore Venus-Saturn aspects in synastry: how the interplay of affection and structure shapes commitment, relational learning, and long-term partnership.
Synastry Venus-Sun Aspects
Explore Venus-Sun aspects in synastry, reflecting how love, values, and aesthetics connect with identity and self-expression in relationships.
Synastry Venus-Moon Aspects
Explore Venus-Moon aspects in synastry, reflecting how love and values connect with emotional instincts and nurturing in relationships.
Synastry Venus-Mercury Aspects
Explore Venus-Mercury aspects in synastry, reflecting how love and aesthetics connect with communication and intellectual exchange in relationships.
Synastry Mars-Mars Aspects
Explore Mars-Mars aspects in synastry — how two people's drives and assertive styles interact to shape competition, cooperation, and action.
Synastry Mars-Venus Aspects
Explore Mars-Venus aspects in synastry, reflecting the classic attraction dynamic between passion and love, desire and receptivity in relationships.
Synastry Mars-Jupiter Aspects
Explore Mars-Jupiter aspects in synastry, how drive and action connect with vision and expansion to shape shared enthusiasm, purposeful growth, and the...
Synastry Mars-Uranus Aspects
Explore Mars-Uranus aspects in synastry: how drive and assertive energy interact with the need for freedom, innovation, and unpredictability in...
Synastry Mars-Neptune Aspects
Explore Mars-Neptune aspects in synastry, how drive and assertiveness connect with imagination, idealism, and longing in relationships.
Synastry Mars-Saturn Aspects
Explore Mars-Saturn aspects in synastry: how drive and structure interact between partners, and how to channel this dynamic toward shared growth and...
Synastry Mars-Pluto Aspects
Explore Mars-Pluto aspects in synastry, how drive and assertiveness connect with depth, power, and transformation in relationships.
Synastry Mars-Chiron Aspects
Explore Mars-Chiron aspects in synastry, how drive and assertiveness connect with deep sensitivities around action, agency, and self-expression in...
Synastry Mars-Sun Aspects
Explore Mars-Sun aspects in synastry, reflecting how drive and assertiveness connect with identity and self-expression in relationships.
Synastry Mars-Moon Aspects
Explore Mars-Moon aspects in synastry, reflecting how drive and assertiveness connect with emotional instincts and security needs in relationships.
Frequently Asked Questions
- Is synastry only for romantic relationships?
- Not at all. Synastry applies to any two-person dynamic: parent and child, business partners, close friends, even long-standing rivalries. The chart comparison reveals the archetypal themes at play between two people regardless of the relationship type. The same Venus-Mars contact might manifest as romantic chemistry in one pairing and creative collaboration in another.
- What is the difference between synastry and a composite chart?
- Synastry keeps the two charts separate and examines how they interact -- think of it as a conversation between two individuals. A composite chart blends both charts into a single midpoint chart that represents the relationship itself as its own entity. Many astrologers use both techniques together for a fuller picture.
- Can a challenging synastry aspect be a good thing?
- Absolutely. Squares and oppositions between charts create dynamic tension that often drives growth, passion, and engagement. Relationships with only harmonious aspects can sometimes lack the friction needed for depth. The key is whether both people are willing to work with the tension consciously rather than acting it out reactively.