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The Astropy Project

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The Astropy Project is a community effort to develop a core package for astronomy using the Python programming language and improve usability, interoperability, and collaboration between astronomy Python packages. The core astropy package contains functionality aimed at professional astronomers and astrophysicists, but may be useful to anyone developing astronomy software. The Astropy Project also includes "affiliated packages," Python packages that are not necessarily developed by the core development team, but share the goals of Astropy, and often build from the core package's code and infrastructure.

Aside from the actual code, Astropy is also a community of astronomy-associated users and developers that agree that sharing utilities is healthy for the community and the science it produces. This community is of course central to accomplishing anything with the code itself. We welcome anyone who wishes to contribute to the project and expect everyone in our community to follow the code of conduct when interacting with others.

For more details on background of the project, you can read the original vision from when the project was founded.

For more details, please visit https://www.astropy.org

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  1. astropy astropy Public

    Astronomy and astrophysics core library

    Python 5.3k 2.2k

  2. astropy.github.com astropy.github.com Public

    The Astropy web pages

    Python 47 107

  3. astropy-APEs astropy-APEs Public

    A repository storing the Astropy Proposals for Enhancement.

    40 41

  4. astropy-project astropy-project Public

    Documents and policies regarding the Astropy Project as a whole.

    TeX 49 48

Repositories

Showing 10 of 86 repositories
  • photutils Public

    Astropy package for source detection and photometry. Maintainer: @larrybradley

    astropy/photutils's past year of commit activity
    Python 311 BSD-3-Clause 156 15 1 Updated Oct 14, 2026
  • halotools Public

    Python package for studying large scale structure, cosmology, and galaxy evolution using N-body simulations and halo models

    astropy/halotools's past year of commit activity
    Python 120 BSD-3-Clause 70 61 3 Updated Oct 13, 2026
  • astropy Public

    Astronomy and astrophysics core library

    astropy/astropy's past year of commit activity
    Python 5,336 BSD-3-Clause 2,206 1,270 146 Updated Oct 13, 2026
  • astropy-benchmarks Public

    Benchmarks for the astropy project

    astropy/astropy-benchmarks's past year of commit activity
    Python 9 BSD-3-Clause 36 15 3 Updated Oct 14, 2026
  • astropy.github.com Public

    The Astropy web pages

    astropy/astropy.github.com's past year of commit activity
    Python 47 BSD-3-Clause 107 24 5 Updated Oct 13, 2026
  • asdf-astropy Public

    This is the extension library for ASDF to provide support for Astropy.

    astropy/asdf-astropy's past year of commit activity
    Python 19 BSD-3-Clause 23 15 2 Updated Oct 13, 2026
  • repo_stats Public

    Git and citation stats for your repo and papers

    astropy/repo_stats's past year of commit activity
    Python 5 BSD-3-Clause 5 0 0 Updated Oct 13, 2026
  • regions Public

    Astropy package for region handling Maintainers: @larrybradley @keflavich

    astropy/regions's past year of commit activity
    Python 65 BSD-3-Clause 64 45 (3 issues need help) 9 Updated Oct 12, 2026
  • ccdproc Public

    Astropy affiliated package for reducing optical/IR CCD data

    astropy/ccdproc's past year of commit activity
    Python 94 BSD-3-Clause 95 84 8 Updated Oct 12, 2026
  • astrowidgets Public

    *PRE-ALPHA*/heavy dev. Jupyter widgets leveraging the Astropy ecosystem

    astropy/astrowidgets's past year of commit activity
    Python 34 BSD-3-Clause 19 15 4 Updated Oct 12, 2026