SpaceEngine is a free space simulator that will allow you to explore the universe in three dimensions, starting from your home planet and ending with the most distant galaxies. The known part of the universe is represented by real astronomical data, while procedural generation is used for unexplored areas. Millions of galaxies, trillions of stars, innumerable planets - all this is available for research. On every planet, moon or asteroid you can land to observe alien landscapes and celestial phenomena. If you love space and everything connected with it, this program will suit you to taste.