Category:Class E

Geoplastic
Class E, or Geoplastic planets are the earliest stage in the evolution of a habitable planet, these worlds range from small and medium size, only ten to fifteen thousand kilometers in diameter. Class E planets are normally found only within a star systems ecosphere. These worlds are typically covered in deep oceans of molten rock and are relatively young and hot, between one million to two billion years in age, with surface temperatures well above 500 Kelvin. The surface conditions and internal structure depend on the age of the object, the younger objects tend to be completely molten, the older ones may have solid surfaces and depending on the mass they may have solid cores. These worlds still posses there thin primordial atmospheres of Hydrogen and helium that are continuously striped from the planet by stellar wind and radiation, but are replenished by the continuous volcanic activity. This class of planet almost never harbors complex lifeforms; any that do exist almost certainly die out when the planet cools down. As the surface cools the crust and core begin to solidify, and the planet then evolves into a Class F world.