The Realm of Fey is used to describe the Universe where the planet of Fey resides. This universe does not follow Newtonian Physics in the meaning that laws of energy conservation, gravity, and most of the time basic understanding of what up and down is. Stars move faster than the speed of light, and often times can be seen forming constellations and fighting each other.
This is a planet far from the center of the universe and is usually where those from far off universes first arrive. It is sometimes referred to as the planet where fantasy came from, and where fairy tales get their characters. It's moon Viator, is home to a form of space elf, and space goblin as well as a massive crystal palace that crashed there some time ago and is home to the king of the moon, King Mac.