Ok I have seen the idea for this from another person, i did not copy any materials its all done from scratch but if anyone knows who else did this let me know so i can say thanks for the idea 
The planet shader uses vertex painting to lay down your land masses, water, ice ect. You have full control over ice colour and spec, ground, water (which is animated and has spec), 2 cloud layers (which are animated), lights from citys (colour and brightness) and also atmosphere colour and density... ill add more to this as i build it.
Heres some pics.





Feel free to comment guys and thanks
Jody

The planet shader uses vertex painting to lay down your land masses, water, ice ect. You have full control over ice colour and spec, ground, water (which is animated and has spec), 2 cloud layers (which are animated), lights from citys (colour and brightness) and also atmosphere colour and density... ill add more to this as i build it.
Heres some pics.





Feel free to comment guys and thanks
Jody
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