Open-source tooling for astrodynamics, mission analysis, and space operations.

astro-tools is a community developing open-source software for space mission design and analysis.

• Mission design & analysis — trajectory design, targeting, optimization, and maneuver planning.
• Astrodynamics libraries — orbital mechanics, coordinate and time systems, force models, and propagation.
• Interoperability — bridges, wrappers, and utilities around established tools (e.g. GMAT) and standard data formats (SPICE, CCSDS).
• Automation & scripting — headless runners, batch workflows, and APIs that make mission analysis reproducible.
• Learning resources — examples, tutorials, and reference missions that teach while they run.

• gmat-run — Run GMAT mission scripts from Python and get results as pandas DataFrames.

We welcome contributions of all sizes.

1. Browse the repositories and find an area that interests you.
2. Check the issues on the relevant repo — look for good first issue or help wanted labels.
3. Open an issue before large changes so we can align on approach.
4. Fork, branch, and open a pull request. Follow the repo's CONTRIBUTING.md if present.
5. Join the discussion — new ideas, questions, and feedback are always welcome.

No contribution is too small — documentation fixes, examples, and bug reports are just as valuable as code.

Have a question, idea, or proposal? Join us in GitHub Discussions.