Category:Class C

Geoinactive
Class C or Geoinactive planets are the final resting place for Class A planets; they are only one thousand to ten thousand kilometers in diameter. These planets are typically barren, most landforms being the result of the ancient volcanism, or impact events. These planets are old, about two to ten billion years old. When all volcanic activity on a class A planet ceases it is reclassified as a Class C and is essentially dead, devoid of all volcanic and tectonic activity. Like there predecessor planets, Class C planets can occupy any region of a star system, the hot zone, ecosphere or cold zone. Class C planets rarely posse atmospheres, and when they do they are the extremely thin remains of the previous atmosphere. The interior of a class C planet is almost always completely solid or has very little molten material left. Class C planets rarely sustain complex lifeforms, and are considered unsuitable for colonization by most species.