Gaia Sky – A comprehensive tool for learning about the universe

Gaia Sky is a free, open-source and cross-platform (based on Java) 3D astronomy visualization software developed by ZAH, Universität Heidelberg from Germany. It is designed to map about 1 billion fixed stars in the Milky Way where our planet is located, based on the framework of ESA's Gaia mission, and supports VOTable, FITS, CSV and all formats supported by the STIL library.