Skip to content

The Astropy Project

Astropy Project Logo

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

Pinned Loading

  1. astropy astropy Public

    Astronomy and astrophysics core library

    Python 5.4k 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
  • 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 121 BSD-3-Clause 70 61 4 Updated Oct 22, 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 6 Updated Oct 22, 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 2 Updated Oct 22, 2026
  • extension-helpers Public

    Helpers to assist with building Python packages with compiled C/Cython extensions

    astropy/extension-helpers's past year of commit activity
    Python 17 BSD-3-Clause 14 8 (2 issues need help) 3 Updated Oct 22, 2026
  • astropy-iers-data Public

    IERS data maintained by @astrofrog and astropy.utils.iers maintainers

    astropy/astropy-iers-data's past year of commit activity
    Python 3 BSD-3-Clause 9 4 1 Updated Oct 22, 2026
  • astroscrappy Public

    Speedy Cosmic Ray Annihilation Package in Python

    astropy/astroscrappy's past year of commit activity
    Cython 82 35 6 1 Updated Oct 22, 2026
  • astropy-sphinx-theme Public

    Standalone version of the Astropy sphinx theme

    astropy/astropy-sphinx-theme's past year of commit activity
    JavaScript 5 BSD-3-Clause 20 5 (1 issue needs help) 1 Updated Oct 22, 2026
  • specutils Public

    An Astropy coordinated package for astronomical spectroscopy. Maintainers: @rosteen @keflavich @eteq

    astropy/specutils's past year of commit activity
    Python 209 138 200 13 Updated Oct 22, 2026
  • astropy-healpix Public

    BSD-licensed HEALPix for Astropy - maintained by @astrofrog and @lpsinger

    astropy/astropy-healpix's past year of commit activity
    C 62 BSD-3-Clause 28 23 (5 issues need help) 1 Updated Oct 22, 2026
  • astropy Public

    Astronomy and astrophysics core library

    astropy/astropy's past year of commit activity
    Python 5,353 BSD-3-Clause 2,222 1,257 130 Updated Oct 22, 2026