Celestia Portable is a free, open-source space simulation software that allows s to explore the universe in 3D. It features a vast database of stars, planets, moons, asteroids, and comets, as well as spacecraft and artificial satellites. The software also allows s to customize their view of the universe and simulate space travel. Celestia Portable can be run directly from a USB drive without installation.
Operating system: Windows
Publisher : Celestia Development
Version: 1.6.2.2 (checksum)