Description of lights in Image. 1 visible volumetric spot 1 visible volumetric abmbient inside a 85% transparent yellow sphere that is .1 larger than the ambient The (actual) sun is positioned at 330 - 25 to shed some light on the planet from an angle. This gives the gradient light effect on the surface. If the sun were positioned behind the planet, I get a black hole. I did try using just the sun as the light source over the planet but it tended to wash out the pic.