Space Engine is described as '- a real-time 3D space simulator, procedural universe generator and visualiser. It lets you explore the universe in three dimensions, starting from planet Earth to the most distant galaxies' and is a Star Map in the education & reference category. There are more than 25 alternatives to Space Engine for a variety of platforms, including Windows, Android, Linux, Mac and iPhone apps. The best Space Engine alternative is Stellarium, which is both free and Open Source. Other great apps like Space Engine are Celestia, No Man's Sky, Gaia Sky and Universe Sandbox.
Systems Tool Kit (STK) is a platform for analyzing and visualizing complex systems in the context of your mission. Interact with data from platforms across the aerospace, defense, telecommunications, and other industries.
Set up a Portal in your real-life room, and seamlessly step into any spatial worlds you create with AI.
The Sun's and Earth's rotation axes are both tilted with respect to the ecliptic, the plane of the Earth's orbit around the Sun.
The Tomorrow War is a space sim based on the trilogy of novels written by a famous Russian author, Alexander Zorich. These books are dedicated to the intergalactic war of two mighty empires.
Browser-based space MMO recreating classic gameplay, featuring real-time multiplayer battles, space exploration with allies, ship upgrades, PvP combat, missions, loot, top-down design, fleet tactics, and free play on any device without installation or downloads.
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