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+====== Stevensonian ======
+**Group**: [[Planemo Group]] \\
+**Class**: [[Planemo Group#Exothermic Class]] \\
+**Type**: Stevensonian
+Stevensonian worlds are terrestrial in nature, and tend to vary between 0.5 and 1.5 Earth masses. They have a hot core which is still cooling, and a thick atmosphere which tends to trap the heat. Unlike [[kauketean]] worlds though, they have cooled enough to be potentially habitable, and may have liquid water on the surface.
+The habitable period doesn't last long, but a few small might actually have life. Such life rarely reaches the level of an [[EuGaian]] world, but bacteria and maybe more complicated life forms could have time to evolve before the temperature of the world plummets.
+Eventually these worlds will freeze unless they find their way into a neighbouring solar system.