Synastry is the branch of astrology that compares two people's birth charts to understand their relationship. It's the difference between reading a book's cover and reading the whole story.
How synastry works
An astrologer overlays both charts and studies the aspects — the angles between one person's planets and the other's. Harmonious aspects bring ease; challenging ones bring growth.
Key synastry connections
Sun-Moon, Venus-Mars and Moon-Moon contacts are among the most important indicators of romantic chemistry and emotional harmony.
Learn more in our birth chart compatibility guide, or start with a quick sun-sign match.
FAQ
Synastry is the astrological comparison of two birth charts, used to analyze a relationship’s chemistry, strengths and challenges.