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Real-time space exploration on your computer ...a little closer to home with Celestia. Celestia is a real-time, 3D space simulator ... the real thing. For free software, Celestia is extremely complete. It has a wealth ...
- PROS: Excellent help, Fascinating graphics, Lots of options, Appears to be excellently researched
- CONS: Clunky control, Search function didn't seem to work well