Learn AstrologySynastry 101

Synastry 101

Synastry compares two birth charts to understand relationship dynamics. It highlights chemistry, friction, and growth themes without labeling a connection as good or bad.

Core focus

Sun + Moon + Rising

Key planets

Venus + Mars

Use for

Dynamics + growth

What is synastry?

Synastry compares two natal charts to see how your energies interact. It shows where things flow easily and where effort is needed.

It is not fate. Synastry gives a map of dynamics, but communication, choices, and timing still shape the outcome.

How to read a synastry chart

1

Start with the Big Three

Sun, Moon, and Rising show identity, emotional needs, and first impressions.

2

Check Venus and Mars

These describe attraction, affection style, and how desire plays out.

3

Look at house overlays

Where a partner's planets land shows which life areas they activate.

4

Read the aspects

Conjunctions amplify, trines flow, squares challenge, and oppositions balance.

5

Keep the orb tight

Closer aspects are louder; wide orbs are softer background signals.

Synastry layers

Core identity

Sun, Moon, and Rising set the emotional tone and basic compatibility.

Attraction + bonding

Venus/Mars and Moon contacts describe chemistry and attachment.

Angles + houses

Planet-to-angle and house overlays show where the bond lands in life.

Use synastry well

Balance ease and challenge: too much ease can stagnate, too much friction can drain.
Prioritize personal planets and angles over outer-planet contacts.
Let the chart inform the conversation, not replace it.

Glossary shortcuts

See full glossary

Key synastry terms and placements.

What -> Why -> Action

What: Identify the strongest synastry contacts. Why: See how they support or challenge the bond. Action: Choose the conversation or boundary that helps the relationship grow.

Related topics

Back to Learn

Explore your connection

Generate your chart and see how your dynamics align in real time.

Get Your Chart