Ich bin vorher über ein feines Programm gestolpert. Einen Open-Source Weltraumsimulator namens Celestia. Ich zitiere mal die Webseite von Celestia: "Celestia is a free real-time space simulation that lets you experience our universe in three dimensions. Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy."