I understand completly and knew I was flying in the face of physics from the get go. I am very new to 3d and artistry in general. I am playing with the light source stuff at the moment and learning on the fly.
The next one had the light source set at the sun in GIMP, but the 3d engine had it elsewhere. I might just drop the suns altogether, but they do look nice. The balance of realism and glitz. Getting the 3D light source right is sending me round the twist, then there is getting the planets perspective right as well...
I can imagine the amount of time you could spend playing with Fractal Terrains, you would get nothing done, ever!