Celestial Synastry
Unlock the cosmic blueprint of your relationship. By aligning the stars at your moments of birth, we reveal the spiritual resonance between two souls.
You
Your Partner
Enter date, time, and location for both people
Are you meant to be?
Send your cosmic challenge — let the stars decide who belongs in your orbit.
Paste anywhere
Send to someone special
Post on your story
The Science of Synastry
What Synastry Actually Measures
Synastry is the branch of astrology that compares two birth charts to reveal the energetic dynamics between two people. Unlike Sun-sign compatibility — which reduces two complex human beings to a single zodiac symbol — synastry overlays the full natal charts of two individuals, examining every planet, angle, and house axis in relation to the other person's placements.
At Aetheris, we measure compatibility across five cosmic dimensions: emotional resonance (Moon contacts), intellectual chemistry (Mercury aspects), romantic attraction (Venus-Mars dynamics), long-term stability (Saturn synastry), and transformative potential (Pluto contacts).
The result is not a verdict — it is a map. Every challenging aspect carries growth potential; every harmonious aspect can calcify into stagnation if unconsciously lived. Synastry reveals the terrain; what you build within it is always a matter of will.
Go Deeper
The Oracle Compatibility Report
Our 70-page Oracle Manuscript includes a full synastry chapter — analysing every cross-aspect between two charts with psychological depth, not keyword summaries. Unlock the complete picture of your cosmic partnership.
Unlock Oracle Manuscript — $24 →