Ruprecht-Karls-Universität Heidelberg

Gaia Sky

08/13/2016 - Version 1.0.4 of Gaia Sky is now out!

Gaia Sky is a real-time, 3D, astronomy visualisation software that runs on Windows, Linux and OS X. It is developed in the framework of ESA's Gaia mission to chart about 1 billion stars of our Galaxy in the Gaia group of the Astronomisches Rechen-Institut (ZAHUniversität Heidelberg).

  • Free and open source - The application is free and open source and will stay this way. You can even contribute to the development or the translations.
  • From Gaia to the cosmos - Move freely through the cosmos and descend to the surface of any Planet or do a close-up inspection of Gaia. All movement and transitions are seamless!
  • Gaia - Observe Gaia in its orbit and discover its movement in the sky and its attitude.
  • 3D ready - With 4 stereoscopic modes: Anaglyphic (red-cyan), VR headset, 3DTV, cross-eye.
  • Planetarium projection mode - Ready to produce videos for full dome systems.
  • Use your own data - Comes with HYG and TGAS. Supports VOTable, FITS, CSV and all formats accepted by STIL.
  • Navigate the galaxy - Support for controllers and gamepads makes navigating the Galaxy a piece of cake.
  • Record and play your camera paths - Ready to record and play camera paths off-the-shelf.
  • Scriptable and extensible - Use Python to script and extend the capabilities of the Gaia Sky.
  • Internationalised - Translated so far to English, German, Spanish and Catalan.

Earth and Sun Gaia Milky Way Mars and Deimos Standing on the Moon Navigating towards Earth Lost in space Star Through the galaxy Crosseye Anaglyph VR

Also have a look at our 360° panorama gallery!

Build status: 

Download Gaia Sky now! - Latest version: 1.0.4
Windows · OS X · Linux · deb · rpm · aur · tgz

Gaia Sky WebGL · Focal Plane Tycho-2 WebGL


Gaia Sky documentation - We have all the most up-to-date documentation in our readthedocs pages. It continually grows, so stay tuned!


3D videos

Here are some 3D videos for 3DTVs, VR devices and Crosseye.

Contact information

Main designer & developer

Toni Sagristà Sellés

E-mail: tsagrista(at) (please send bugs/requests/questions here)

Personal webpage:

Supervisor & contributor

Apl. Prof. Dr. Stefan Jordan

E-mail: jordan(at)

Personal webpage:


This software is published and distributed under the MPL 2.0 (Mozilla Public License 2.0). You can find the full license text in the file or visiting


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