Cesterious (No known planet has a name of what they look like) Half is really hot, half is freezing cold. The red sea splits to two halves They also glow for some reason Scientists can't figure out (BECAUSE IT WAS JUST DISCOVERED 4 SECONDS AGO!) This is also why they don't know what exactly it is made of yet. If it's marked as safe we could use it as a prison If it's not marked as safe we can make up a name for any new elements on the planet and teach all the school children about it.