Relationship astrology
Synastry Aspects
Synastry compares two birth charts to see how one person's planets contact the other's. A synastry aspect — like Venus conjunct Mars or Moon square Saturn between two people — describes a specific relationship dynamic: attraction, emotional needs, friction, and where two people naturally support or challenge each other.
These pages explain the cross-chart contacts, not single-chart placements. Each is one thread in a whole comparison — read one below, then compare both complete charts to see which contacts you actually share.
- Sun Conjunct Moon in SynastrySun conjunct Moon in synastry is a classic bond of belonging: one person's core identity meets the other's emotional nature. What it means for a relationship.
- Sun Square Moon in SynastrySun square Moon in synastry pits one person's identity against the other's emotional needs. Attraction with tension — what it means for a relationship.
- Moon Conjunct Venus in SynastryMoon conjunct Venus in synastry blends emotional warmth with affection — a tender, easy fondness. What this sweet contact means for a relationship.
- Moon Square Saturn in SynastryMoon square Saturn in synastry meets emotional needs with caution and restraint. What this heavy but maturing contact means for a relationship.
- Venus Conjunct Mars in SynastryVenus conjunct Mars in synastry fuses affection with desire — strong romantic and physical chemistry. What this passionate contact means for a couple.
- Venus Square Saturn in SynastryVenus square Saturn in synastry meets affection with caution and fear. What this testing but potentially lasting contact means for a relationship.
- Venus Opposite Pluto in SynastryVenus opposite Pluto in synastry meets affection with intensity and power. What this magnetic, transformative contact means for a relationship.
- Mars Square Pluto in SynastryMars square Pluto in synastry combines drive with raw power — potent, competitive, transformative. What this high-voltage contact means for a couple.
- Sun Conjunct Venus in SynastrySun conjunct Venus in synastry blends identity with affection — warmth, liking, and easy enjoyment. What this pleasant contact means for a relationship.
- Moon Conjunct Moon in SynastryMoon conjunct Moon in synastry aligns two emotional natures — instinctive understanding and shared rhythms. What this comforting contact means for a couple.
- Sun Conjunct Mars in SynastrySun conjunct Mars in synastry brings vitality, desire, and initiative into a relationship. Explore the chemistry, motivation, and conflict potential.
- Moon Conjunct Mars in SynastryMoon conjunct Mars in synastry links emotional instincts with desire and action. Learn how this reactive, passionate contact affects a relationship.
- Moon Opposite Sun in SynastryMoon opposite Sun in synastry creates a compelling polarity between emotional needs and identity. Discover its attraction, balance, and relationship challenges.
- Venus Square Mars in SynastryVenus square Mars in synastry brings charged attraction, different pacing, and creative tension. See what this chemistry contact means for relationships.
- Venus Opposite Mars in SynastryVenus opposite Mars in synastry creates magnetic romantic polarity between affection and desire. Explore its chemistry and balancing work in relationships.
- Mars Conjunct Mars in SynastryMars conjunct Mars in synastry aligns two people's drive, libido, and fighting style. Learn the strengths and flashpoints of this high-energy contact.
- Sun Conjunct Jupiter in SynastrySun conjunct Jupiter in synastry expands confidence, optimism, and generosity between partners. Discover its uplifting potential and excesses.
- Venus Conjunct Venus in SynastryVenus conjunct Venus in synastry aligns affection, values, and pleasure. Explore why this contact can make love and daily enjoyment feel naturally shared.
- Mercury Conjunct Mercury in SynastryMercury conjunct Mercury in synastry aligns communication, humor, and mental rhythm. Learn what this easy-minded contact brings to a relationship.
- Sun Square Saturn in SynastrySun square Saturn in synastry brings commitment, pressure, and lessons about recognition. Learn how this serious aspect shapes a relationship.
Compare two charts
Synastry aspects only matter if they're actually present. Compare both birth charts to see your real cross-chart contacts and house overlays.
Compare our charts