cosmos/01_yachay/cosmos

cosmos

Astronomy with astronomical precision. Time · ephemerides · coordinates · images · astrology.

Rust suite for astronomical computation, validated against official ephemerides (JPL DE440/441, IAU 2006/2000A, IERS). Covers everything from time scales (UTC/TT/TAI/UT1) to WCS projections, through star catalogs, planetary positions, eclipses, transits, sundials, tides, tropical and sidereal astrology.

Install

# CLI
cargo run --release -p cosmos-cli -- --help

# Llimphi app (sky map + interactive ephemerides)
cargo run --release -p cosmos-app-llimphi

# HTTP server
cargo run --release -p cosmos-server

Compatibility

• Linux / macOS / Windows — all core crates compile without system deps.
• Wawa — cores compile to WASM (cosmos-core, cosmos-time, cosmos-coords, ...).
• Web — cosmos-web exposes a subset via WASM/JS.
• Validation against JPL Horizons and AstroPy in cosmos-validation.

Crates

See the table in README.md. Highlights: cosmos-time, cosmos-coords, cosmos-ephemeris, cosmos-pointing, cosmos-catalog, cosmos-sky (ergonomic facade), cosmos-wcs, cosmos-astrology, cosmos-rise-set, cosmos-transits, cosmos-eclipses, cosmos-sundial, cosmos-tides, cosmos-leo, plus cosmos-cli, cosmos-server, cosmos-app-llimphi, cosmos-web, cosmos-validation.

Considerations

• Zero client-side execution with user-sensitive data. Latitude/longitude never leaves the binary without permission.
• DE files are downloaded explicitly via cosmos-cli download.
• Astrology is separable: if you don't want it, you don't link cosmos-astrology.