A simple space simulator

Requires: 
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* PyOpenGL: <http://pyopengl.sourceforge.net/>
* pygame: <http://www.pygame.org/>


Sources:
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* The satellite photography of the Earth is (c) the ESA, see <http://www.esa.int/esaEO/SEMGSY2IU7E_index_0.html>
* The background image of the night sky is from <http://www.gigagalaxyzoom.org/>, credit: ESO/S. Guisard