A Class B planet is a geomorteus planet. They have an age that ranges from 0-10 billion years and a diameter between 1,000 and 10,000 km. They are located within the Hot Zone of a solar system. A geomorteus planet is categorized by a partially molten surface with very active volcanoes. The atmosphere is thin and without active gasses. Class B planets cannot sustain any known form of life.