About
A site that reads you, a service that writes to you.
Why relationships
A chart becomes easier to recognise when it meets another person. The way someone speaks, rests, pushes, and shows care is often clearest in the space between two people. Aster reads that space without pretending to know what the other person feels.
Why two traditions
Western astrology gives Aster a detailed portrait of character and relationship. Chinese BaZi adds constitution and dated chapters. One describes what tends to stay. The other helps explain why the same person may be moving differently now.
Why letters
A reading should make one argument, not hand over a dashboard of disconnected facts. Aster writes letters because a letter can hold context, uncertainty, and a clear line of thought without asking the reader to assemble the chart alone.
How the readings are made
The positions and periods are calculated before the prose is written. Those facts are handed to a writing model, which composes from the supplied evidence. Automated checks reject unsupported claims and language that belongs in the chart ledger rather than the reading.
Where interpretation begins
Astrology is an interpretive practice. Aster can calculate a position exactly, but the meaning written from it remains a reading. It is offered for reflection, never as proof, diagnosis, or a substitute for professional advice.
Who makes it
Aster is made by a small team in the United States. The calculation method and the limits placed on every reading are published here.