This code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License or any later version.
This code is distributed in the hope that it will be useful but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the GNU General Public License for more details.
References
The artist concept of the planet in a four-star system, used in the header graphic, comes from Open Exoplanet Catalogue. Credit: Haven Giguere/Yale.
The Milky Way panorama, used in the header graphic, comes from the GigaGalaxy Zoom project. Credit: ESO/S Brunier.
The photo of the Litomyšl Astronomical Clock, used in the header graphic, comes from the article in Český rozhlas. Credit: Petr Červený.
The photo of the Litomyšl Castle, used in the header graphic, comes from Wikipedia. Credit: Marcin Pudelek. License: CC BY-SA 4.0.