Ruprecht-Karls-Universität Heidelberg


(November 11, 2022) Current stable version: 3.3.0

Gaia Sky supports VR since version 2.2.1! Use the CLI argument gaiasky -vr or use the gaiaskyvr.exe executable (on Windows) to run it. You need an HDM supporting OpenVR.

System Package SHA256
Linux DEB package (96 MB)
RPM package (96 MB)
Linux/Unix installer (48 MB)
AppImage (104 MB)
AUR package - gaiasky
Flatpak (Flathub link)
Windows 64-bit installer (93 MB) 52119c3e81d16d1a6cacdb8eb5b226b4adee5ed07e73a7c5b5c6d95f05a0fa29
macOS DMG package (102 MB) a7db996a4b24555a10a81db030d7a882fc2a36adf1c40db9bd61ce29724a13ea
Archive file TAR.GZ archive file (45 MB) 0c0b0c2d06d190a183eec4e297e2922917998a9ec19e7fcde94ce1485171e736
GIT repository Source code -

Installation instructions

Windows installer

Download the installer and double-click on it. Follow the on-screen instructions. In Windows 8/10 SmartScreen may block the installation. If so, just click on More info and then on Run anyway.

macOS installer

Download and run the DMG file. Then follow the installer instructions. Our package is not signed, so you may want to have a look at how to open apps from "unidentified developers".

TGZ installation

Uncompress the archive in POSIX systems using:

tar -zxvf gaiasky-[version].tar.gz

DEB package

Run the following in a terminal:

dpkg -i gaiasky-[version].deb

RPM package

Run the following in a terminal:

rpm -ivh --nodigest gaiasky-[version].rpm

AUR package

Use any tool capable of installing packages from AUR. The package name is gaiasky. For example, with yay:

yay -S gaiasky


To install, just do:

flatpak install flathub de.uni_heidelberg.zah.GaiaSky

Run with:

flatpak run de.uni_heidelberg.zah.GaiaSky


The AppImage package does not need to be installed. Just download the file, optionally check the digest, give it execution permission, and run it.
Check digest:

sha256 ./GaiaSky_[version].appimage

Give execution permission to your user:

chmod u+x ./GaiaSky_[version].appimage

Run with:


How to run...

Gaia Sky
Use the shortcut provided by your Operating System, or use the gaiasky command from your favourite CLI. If using the Flatpak, see instructions above.
Gaia Sky VR
Use the 'Gaia Sky VR' shortcut in the start menu or gaiaskyvr.exe (Windows) or $ gaiasky -vr from CLI.

Getting the data

The Gaia Sky installation only contains the raw program. If you actually need to run Gaia Sky you will need to download some data (catalogs, 3D models, textures, etc.). To do so, Gaia Sky contains an integrated download manager which pops up at startup. In case you need to run Gaia Sky in a machine without an internet connection or have problems with the built-in downloads, we offer direct downloads for all versions of all data packs. As a general rule of thumb, you should always get the most recent version.

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