Apps similar to Universe Sandbox include Celestia, which is free and open source. Other options are Space Engine, Solar System Simulator, Gravity Simulator and Space Crash Simulator. You can choose from more than 10 Simulation Games like Universe Sandbox for Windows, Mac, Linux, iPad and Android.
Mitaka is software for visualizing the known Universe with up-to-date observational data and theoretical models. Mitaka users can seamlessly navigate through space, from the Earth to the edges of the known Universe.
Japan
Pioneer is a space adventure game set in the Milky Way galaxy at the turn of the 31st century. The game is open-ended, and you are free to explore the millions of star systems in the game. You can land on planets, slingshot past gas giants, and burn yourself to a crisp flying...
Warp to distant stars and explore various exoplanets like lava worlds, water worlds, earthlike planets or massive jovians with Stars and Planets planetarium app and astronomy guide. Space is awesome and the universe is at your fingertips!
