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				 Re: Expanding Atmosphere Types 
 Slightly off topic:It seems to me that most solar systems should have LOTS of tiny no-atmosphere or thin-atmosphere planets, especially around the fringes.   In other words, a Kuiper belt.
 
 Also, if you're going to aim for realism, then planets must have temperature attributes.  I would think that the extremes of temperature would be more important for colonization than atmosphere type.  If a planet's climate at its equator is like Antarctica in winter, then you're not going to get undomed colonies of humans even if the atmosphere is nitrogen/oxygen.  Conversely, if a planet is very Earth-like except that it has little atmospheric oxygen, then colonists just need to carry an O2 supply/generator when they go outside -- domes aren't really needed.
 
				__________________Give me a scenario editor, or give me death!     Pretty please???
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