There are many different ways you can contribute to the Astropy project!
Even if you don’t have time to contribute code or documentation, please make sure you report any issues with the package, the documentation, or this website, to the Astropy issue tracker!
If you are interested in contributing fixes, code or documentation to Astropy (whether the core package or affiliated packages), you can join the astropy-dev mailing list, and head over to the documentation pages on contributing to Astropy. You can either send us a patch, or (preferably) work on a fork of Astropy and submit the changes via a pull request.
Whether you have an idea for a new Astronomy package, or already have a package that you want to integrate with the Astropy project, you can develop an affiliated package! After joining the astropy-dev list and notifying other developers of your intent to develop an affiliated package, you can head over here for instructions on getting started! We can even create a repository for your affiliated package in the astropy organization on GitHub!