View source for Class B

Known as Geomorteus planets, Class B worlds are young planets that are larger than Class A planets. They have partially molten surfaces and active volcanoes. Not all Class B planets have an atmosphere but those that do have a very thin one. [[Mercury]] in the [[Sol System]] is considered to be a Class B planet, though Mercury's surface is solid and without known volcanoes.


[[Category:Astrometrics]] [[Category:Planet Classes]]