The Local Distribution of Yesodic Matter

Matter from different Domains interacts gravitationally. Therefore, the gravitational well of the Earth may be expected to have attracted a large amount of other-Domain matter.

How much? And how is it distributed?

image © Jason C Sprott

The gravitational well formed by the Earth has attracted Dark matter from all the other Domains. The matter from each separate Domain, interacting only gravitationally, will form a spherical cloud centered on the Earth's center of mass.

We can tell a surprising amount about the size, density, mass and angular momentum of the Yesodic "cloud" from the few simple things we know about the Yesodic Darks.

Q. What proportion of the matter in the Earth's gravitational well is ordinary, everyday Briahtic matter, of the sort of which we are composed?

A. At least 95%. We can calculate the total mass of the Earth, (including matter from all Domains), by observing the effect of its gravitational pull on artificial satellites. It is 5.983×10²⁴ Kg. Though we are not certain of the exact composition of the (Briahtic) Earth's core, we know that it is largely molten Nickel-Iron, freezing onto a solid core at about 2000 kilometers down. What we know of the equation of state of nickel-iron assures us that almost all the planet's mass is Briahtic. By changing the proportion of nickel to iron in our models and adjusting the proportions of other elements it is possible to find spare mass for a little non-Briahtic matter: but only a little.
Q. If only 5% of the matter is non-Briahtic, how is that non-Briahtic matter distributed?

A. The Yesodic Darks have told us curiously little about this simple fact.
However, we do know that there are Yesodic creatures that are not intelligent and are yet able to navigate in the environment near the Earth's surface.
Since they are able to move, there must be some medium they move in: since they move both horizontally and vertically with disconcerting ease, that medium must be fluid: and this fluid must extend from the Earth's center out at least to a radius equal to the (Briahtic) surface. Since the Earth has an average density of 5.5, the fluid, even if it is incompressible, can have a density of no more than approximately 0.25.
In fact, this is the extreme high value. We have some declassified logs from instruments designed to track these non-intelligent Yesodic entities ⁽¹⁾: and though we can only follow the motion of the creatures' centres of gravity, and approximately record their mass and size, we can tell enough from the dynamics of their movements to confirm that:
1. They are in a fluid (which we can observe slowly dampens their velocity when they are not expending energy)
2. The fluid is approximately corotating with the solid Briahtic matter of the Earth.
3. Relative to that Briahtic "background", the fluid has currents of the order of 4 meters/sec, in directions which seem to vary cyclically according to the time of day. The currents have a considerable vertical component and may therefore be of convective origin. This in turn suggests that the fluid draws energy from cross-Domain interactions in the deep strata of the Earth, a speculation which is apparently confirmed by Transmission XII
4. The fluid is of near-zero viscosity and is much less dense than water; the best estimate is that it is about one-tenth as dense as water, i.e with density 0.1.⁽²⁾
5. The fluid extends well above the Earth's (Briahtic) surface. Observations have been made at up to 400 km altitude. ⁽³⁾
Q. How much matter is there belonging to Domains other than Briah and Yesod?

A. We believe that Briahtic and Yesodic matter together make up at least 98% of the planet's mass. There is very little non-Yesodic Dark matter in the Earth's gravitational well.

The picture we are left with is that of a deep "ocean" of Yesodic liquid (liquid, not gas, because incompressible), about one-tenth as dense as water. It corotates with Briahtic matter; it extends out to a radius of about 7000 km from the Earth's core; there are convection currents in it; it contains large numbers of living creatures, some of whom are intelligent.

Does this ocean extend to the planet's core, or does it become solid at some depth? What is its temperature profile? Is there a Yesodic "atmosphere", or a solid insulating crust, above the stratum of fluid? So far, we do not know.