There are three spheres/layers already applied to the earth model. It does have an atmoshere sphere around it. In this 'photo' you wouldn't see the atmosphere very much to 'high' above the Earth. I mean look at some NASA images and you'll see what I am talking about. :-) Also the closer you get to this Earth, the more detail you can see, like for example the mountains start to show height. :-) Don't worry though, when I can get rid of the seam in the cloud texture I'll release the scene above. :-)