Stellarium is a free open source planetarium for your computer
License: GPL-2.0
Web page: https://stellarium.org/
Source code: https://github.com/Stellarium/stellarium
Become a sponsor: https://opencollective.com/stellarium
Translate: https://explore.transifex.com/stellarium/stellarium
Report the bug: https://github.com/Stellarium/stellarium/issues