Eridún Crux
The Eridún Crux is a common term for the cluster of ten planes at the centre of the expansive Daybreak Empire, named for the Empire's capital plane, Eridún. These ten worlds are often called cruxplanes or hubplanes. The Crux is the most populous planar grouping in the Known Universe. The humanoid-settled planar region around the Crux is sometimes called the Greater Eridún Crux Region or GECR.
Sometimes called the Bright Web (especially by worshippers of The Victorious Noontide and other anti-imperial groups), the inner cluster would represent the administrative and academic core of the interplanar Daybreak Empire for the entirety of its reign.
All of the innermost Cruxplanes have Full planar integration scores, meaning the vast majority of their residents are aware of other settled planes, Voidwalking, et cetera. Most of the planes in the inner GLCR have High to Full integration scores.
In terms of metaphysics, there is nothing particularly special about the Crux or the planes therein. With the exception of Lochros, nine out of ten are Class III or above (contains a third layer of reality called the Spective Layer, which governs dreams and higher thought), though this is by no means impossible, simply unlikely. Aside from this, the Crux is simply most densely populated group of planes in the Known Universe and has arrived there through normal paths of history.The Cruxplanes
At the centre of the Crux are twin planes Eridún and Lochros, which are surrounded by an irregular "oval" of eight planes. Surrounding Eridún are:
Surrounding Lochros are:
Planar Tiers
Planes are sometimes ranked by tiers of separation from the inner Crux. Eridún and Lochros are considered 0th Tier planes; the surrounding eight Cruxplanes are 1st Tier. Planes directly neighbouring the eight Cruxplanes are 2nd Tier, and so forth.Examples
Waking Materia is a 5th Tier plane, as the most direct path from the Crux is to travel from Eridún to Silur (1) to Vangelis (2) to SM4715 (3) to SR3880 (4) to Waking Materia (5).
Rozsa is a 3rd Tier plane, as the most direct path is from Lochros to Nitoxis (1) to NE7200 (2) to Rozsa (3).
I do love me some cosmology, especially cosmology that differs from our own. I loved poking around here and in the linked articles about the Known Universe, the Void, and Layer Theory. I'd be interested to see what you add to this in the future!