Open Source 3D universe simulator for desktop and VR with support for more than a billion objects

Gaia Sky is a real-time, 3D, astronomy visualisation software for desktop and VR that runs on Linux, Windows and macOS.
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 (ZAH, Universität Heidelberg).
Explore the Solar System, the Milky Way or even the most distant galaxies of the Universe.