Attached Link: http://www.renderosity.com/viewed.ez?galleryid=72313&Start=1&Sectionid=0&Form.Search=guslaw&Form.se

Check out the attached link to one of my pics. Is this what you have in mind? You can have a preset sky if you make your planet/moon partially transparent. You'll have to play with the transparency setting 'till you get what you like. You might also want to check out Steve Savino's tutorial on making crescent planets/moons (the link is in my next post). In my picture I used a combination of both Steve Savino's technique and playing with transparency settings on flat 2D disk. The disk is the same diameter and in the same location as the sphere of the moon. I hope this helps. Walter