SetSky 
        /Material:"MilkyWay Skybox"
        /AmbientLight:20, 20, 20, 255
AddPointLight plight1
        /Intensity:3.0
        /Range:50
AddSun sun
AddEmptyObject earth_center
AddEarth earth
        /Parent:earth_center
        /Position:5, 0, 0
AddTrailRenderer tr1
        /Parent:earth
AddEmptyObject moon_center
        /Parent:earth
AddMoon moon
        /Parent:moon_center
        /Position:2, 0, 0
        /Scale:0.5, 0.5, 0.5
void loop()
{
    earth_center.Rotate(0, -1, 0)
    earth.Rotate(0, -0.5, 0)
    moon_center.Rotate(0, -0.2, 0)
}