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#astronomy

Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.

35 records
Tagged “astronomy”Ranked by health index
PyPI
100Exceptionalhealth index
astropy/astropy
Astronomy and astrophysics core library
Python · C★ 5,288↓ 3.4M/moAug 28, 2026
BSD-3-ClauseAug 28, 2026 · metrics 2.10.0
PyPI
97Exceptionalhealth index
asdf-format/asdf
ASDF (Advanced Scientific Data Format) is a next generation interchange format for scientific data
Python★ 563Jul 26, 2026
BSD-3-ClauseJul 26, 2026 · metrics 2.10.0
PyPI
94Exceptionalhealth index
gammapy/gammapy
A Python package for gamma-ray astronomy
Python★ 283↓ 9,194/moJul 19, 2026
BSD-3-ClauseJul 19, 2026 · metrics 2.10.0
PyPI
92Excellenthealth index
jobovy/galpy
Galactic Dynamics in python
Python · C★ 281Jul 26, 2026
BSD-3-ClauseJul 26, 2026 · metrics 2.10.0
PyPI
90Excellenthealth index
liberfa/pyerfa
Python bindings for ERFA routines
Python · C★ 48↓ 3.6M/moAug 27, 2026
BSD-3-ClauseAug 27, 2026 · metrics 2.10.0
PyPI
89Excellenthealth index
lsst/daf_butler
Data Access abstraction framework for the Rubin Observatory
Python★ 15Jul 21, 2026
Custom licenseJul 21, 2026 · metrics 2.10.0
PyPI
87Excellenthealth index
PyAutoLabs/PyAutoLens
PyAutoLens: Open-Source Strong Gravitational Lensing
Python★ 184↓ 7,997/moJul 19, 2026
MITJul 19, 2026 · metrics 2.10.0
PyPI
87Excellenthealth index
spacetelescope/crds
Calibration Reference Data System for HST and JWST.
Python★ 13↓ 43K/moSep 6, 2026
Custom licenseSep 6, 2026 · metrics 2.10.0
PyPI
84Excellenthealth index
danieljprice/phantom
Phantom Smoothed Particle Hydrodynamics and Magnetohydrodynamics code
Fortran★ 159Aug 16, 2026
Custom licenseAug 16, 2026 · metrics 2.10.0
npm
81Excellenthealth index
simiancraft/unitforge
Forge anything measurable. A units library that does not assume you are doing physics.
TypeScript★ 4↓ 6,301/moSep 1, 2026
MITSep 1, 2026 · metrics 2.10.0
PyPI
80Excellenthealth index
TheDaniel166/moira
Astronomy-first pure-Python ephemeris and astrology computation engine with transparent, auditable calculations.
Python★ 33↓ 9,470/moSep 5, 2026
MITSep 5, 2026 · metrics 2.10.0
NuGet
78Goodhealth index
isbeorn/nina
N.I.N.A. (Nighttime Imaging 'N' Astronomy) - Advanced astrophotography sequencing software for Windows, supporting full automation of imaging sessions.
C# · C★ 224Aug 23, 2026
MPL-2.0Aug 23, 2026 · metrics 2.10.0
PyPI
77Goodhealth index
FormingWorlds/Zalmoxis
Planetary interior structure model
Python★ 4Jul 17, 2026
Apache-2.0Jul 17, 2026 · metrics 2.10.0
npm
77Goodhealth index
mourner/suncalc
A tiny JavaScript library for calculating sun/moon positions and phases.
JavaScript★ 3,411↓ 1M/moJul 18, 2026
BSD-2-ClauseJul 18, 2026 · metrics 2.10.0
npm
77Goodhealth index
nasa-gcn/gcn-kafka-js
Official Node.js client for the General Coordinates Network (GCN)
TypeScript★ 0↓ 2,925/moAug 5, 2026
CC0-1.0Aug 5, 2026 · metrics 2.10.0
npm
75Goodhealth index
observerly/astrometry
observerly’s lightweight, zero-dependency, type-safe astrometry library for TypeScript. Accurately determine the positions of the Sun, Moon, and planets, handle coordinate transformations with ease, calculate transit times for any celestial object, and integrate precision astronomy into your projects with clean, dependency-free code.
TypeScript★ 29↓ 2,220/moAug 5, 2026
MITAug 5, 2026 · metrics 2.10.0
PyPI
73Goodhealth index
moble/scri
Python/numba code for manipulating time-dependent functions of spin-weighted spherical harmonics on future null infinity
Python · Jupyter Notebook★ 23↓ 5,972/moSep 5, 2026
MITSep 5, 2026 · metrics 2.10.0
crates.io
73Goodhealth index
nightwatch-astro/fits-header
Dependency-free, std-only FITS header reader/writer (parse + CRUD + serialize).
Rust★ 1↓ 2,151/moAug 27, 2026
MPL-2.0Aug 27, 2026 · metrics 2.10.0
crates.io
73Goodhealth index
nightwatch-astro/skymath
Planning-grade astronomy math for astrophotography tooling
Rust★ 0↓ 2,523/moJul 25, 2026
MPL-2.0Jul 25, 2026 · metrics 2.10.0
Go
65Goodhealth index
TuSKan/astrogo
Pure Go Astropy-inspired astronomy and observatory-planning toolkit
Go★ 1Jul 17, 2026
MITJul 17, 2026 · metrics 2.10.0
PyPI
63Moderatehealth index
AstarVienna/AnisoCADO
A package to generate off-axis PSFs for the SCAO mode for MICADO at the ELT
Python★ 7↓ 5,368/moAug 1, 2026
GPL-3.0Aug 1, 2026 · metrics 2.10.0
PyPI
63Moderatehealth index
anhydrous99/zigfitsio
A pure-Zig implementation of the FITS 4.0 astronomical data format, with feature parity goals against CFITSIO - no C import, no C sources.
Zig · TypeScript · Python★ 0↓ 7,409/moJul 18, 2026
MITJul 18, 2026 · metrics 2.10.0
PyPI
60Moderatehealth index
GalSim-developers/GalSim
The modular galaxy image simulation toolkit. Documentation:
Python · C++★ 271Jul 21, 2026
Custom licenseJul 21, 2026 · metrics 2.10.0
NuGet
60Moderatehealth index
Occurify/Occurify
A powerful and intuitive .NET library for defining, filtering, transforming, and scheduling instant and period timelines.
C#★ 78Sep 5, 2026
MITSep 5, 2026 · metrics 2.10.0
PyPI
60Moderatehealth index
g-battaglia/libephemeris
High-precision Python ephemeris — NASA JPL DE440/DE441 via Skyfield, Swiss-Ephemeris independent, compatible API.
Python★ 15↓ 1,417/moAug 22, 2026
AGPL-3.0Aug 22, 2026 · metrics 2.10.0
crates.io · PyPI
60Moderatehealth index
theatrus/seiza
Rust astronomical plate solver
Rust★ 2↓ 1,027/moJul 22, 2026
Apache-2.0Jul 22, 2026 · metrics 2.10.0
crates.io
59Moderatehealth index
klausbrunner/solarpositioning-rs
Rust sun position code (topocentric coordinates, sunrise/sunset/twilight) based on the NREL SPA and ENEA/Grena algorithms.
Rust★ 5↓ 2,206/moAug 15, 2026
MITAug 15, 2026 · metrics 2.10.0
npm
57Moderatehealth index
prolaxu/swisseph-wasm
A high-precision JavaScript wrapper for the Swiss Ephemeris WebAssembly module, providing professional-grade astronomical calculations for astrology, astronomy, and related applications.
JavaScript · C★ 35↓ 7,393/moJul 30, 2026
Custom licenseJul 30, 2026 · metrics 2.10.0
npm
57Moderatehealth index
theatrus/seiza-overlay
Frontend npm library for seiza.fyi solver overlays
TypeScript★ 0↓ 2,473/moJul 26, 2026
Apache-2.0Jul 26, 2026 · metrics 2.10.0