Otherspace

"Otherspace is a place so completely foreign that no amount of evidence could've convinced me it was real had I not traveled there myself." from the research journal of Dr. Victor Havelock Otherspace is a realm above the natural world. Rather than the standard three spacial and one temporal dimension of realspace, it consists of at least four spacial and two temporal dimensions, although the exact amounts has never been determined. This gives any being residing in it immense power over realspace.

Discovery of Otherspace
Otherspace was discovered in -15 FiE by Earth scientist Dr. Victor Havelock. On March 25 -20 FiE, he released a paper documenting his research into the subject of extra-dimensional theory. The paper had glaring inconsistencies and missing data and was largely mocked, if mentioned at all. This changed when he published a second paper on January 15, -15 FiE. This paper not only contained much more reliable evidence for the claims in his first paper and also detailed his theories about Otherspace. It also contained basic hypothesis about how to send and receive energy from Otherspace. The paper quickly gained popularity in the media, forcing other scientific organisations to perform their own research. As further research quickly proved the validity of Havelocks data, the existence of Otherspace became widely known. (Note: for more details, read The Research Journal of Dr. Victor Havelock)

What is Otherspace?
Otherspace is a dimension consisting of at least four spacial and two temporal dimensions, the exact number, however, is not known. Its strange properties allow any being that resides inside of it to affect great change onto realspace, provided they have enough energy. If a three-dimensional being were to poke a finger into a two-dimensional world, it would appear to any beings in that world as if it was magic, shifting in and out of reality. Otherspace is the same, the changes that it can exert on realspace appear to the denizens of realspace as if they were magic.

Otherspace is the home of the Conduit and the gods. If these being were to be brought to realspace, the shear concentration of their energy would immediately collapse them into a black hole. It is only in Otherspace, and in some of the most distant of the Outer Realms, where they can exist without collapsing. Without the existence of Otherspace, the Conduit would not be possible, which would render magic and most known forms of FTL travel impossible, vastly changing the face of The Realms.