Celestia is a free space simulation that lets you explore the universe in three dimensions!! Unlike other space simulation software s Celestia doesn't confine you just to the surface of the earth. You can travel throughout the solar system visiting over 100,000 stars!This is one of the coolest open source software s i have ever come across. The view is so real and fascinating sometimes. Best feature is that it doesn't require a net connection to do all this.
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size 33.5mb
Celestia has support for Windows, Linux and Mac.
