Planetary Appearance From orbit Hexos appears as a normal world, it is only when seen through high resolution imaging devices that one can see the rotting corpse of a world that is Hexos. The extremely thin atmosphere does not retain much heat, so the average temperature hovers about 100C. Most of the water on the planet is located in two large ice caps at each pole. Geothermal vents keep small lakes liquid. Primitive lichen and algae live around these lakes; so far these are the only native forms of life that have been found on the planet.