KStars is free, open source, cross-platform Astronomy Software. Internationalised - Translated so far to English, German, Spanish, French, Catalan and Slovenian. Scriptable and extensible - Use Python to script and extend the capabilities of the Gaia Sky. Record and play your camera paths - Ready to record and play camera paths off-the-shelf. Navigate the galaxy - Support for controllers and gamepads makes navigating the Galaxy a piece of cake. SAMP aware - Implements SAMP commands to interoperate with SAMP-ready software such as Topcat and Aladin.

Real-time filters - Filter any dataset by distance, magnitude, galactic, ecliptic, equatorial coordinates, and more. Supports VOTable, FITS, CSV and others (STIL). Use your data - Bundles Gaia DR2, NBG, SDSS and MWSC. Planetarium projection mode - Ready to produce videos for full dome systems. 360 mode - With sperhical (equirectangular), cylindrical and Hammer projections. 3D-ready - With 6 stereoscopic modes: Anaglyphic (red-cyan), VR headset, 3DTV (H and V), cross-eye and parallel view. Planetary surfaces - Explore surfaces with elevation maps (using tessellation, if available).

6D exploration - Represents star positions but also proper motions and radial velocities, if available. Virtual Reality - The whole Universe in VR! Gaia - Observe Gaia in its orbit and discover its movement in the sky and its attitude. From Gaia to the cosmos - Move freely through the cosmos or explore the Solar System in a seamless manner! Contribute to the development and translations. Free and open source - Gaia Sky is open and free, and will stay this way. In the Gaia group of the Astronomisches Rechen-Institut (ZAH, Universität Heidelberg).

It is developed in the framework of ESA's Gaia mission to chart about 1 billion stars of our Galaxy Gaia Sky is a real-time, 3D, astronomy visualisation software that runs on Windows, Linux and macOS.

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