forgot a variable:
#declare LColor=<1.25,1.125,1>;

and of course you need to add a background, probably best with some 
ground_fog (so the moon will still look ok), something like this: 
fog {
  fog_type 2
  distance 1575
  color rgb <88,120,179>/128/1
  fog_offset -1
  fog_alt 580
}

(although it doesn't look as good with fog as with a sky_sphere :( )

cu!
-- 
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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