Class Y - Demon
Age: 2-10 billion years
Diameter: 10,000 - 50,000 km
Location: Hot, Ecosphere, and Cold Zones
Surface: Temperatures can exceed 500°K
Atmosphere: Turbulent, saturated with toxic chemicals and thermionic radiation
Life-Forms: Mimetic (Delta Quadrant)
Found in all star zones, Class Y planets are extremely inhospitable worlds. When encountered by scouting vessels they should be given a wide berth. Surface temperatures can exceed those of volcanic worlds, being in the range of 300 to 500 ºC. The atmosphere contains toxic unbreathable gases, and at certain geological locations emit lethal levels of thermionic radiation.