Cool picture. Please justify this "natural state" claim. Sounds very similar to Aristotelean thinking that for example, the "natural state" of rocks is "on the ground"; hence rocks fall.
Like I said, when you have any bunch of matter that gathers together naturally by interior or exterior forces, it's formation is going to be a sphere. Take a piece of clay for instance. Cup your hands and apply even pressure to all sides as best you can, and it will form something similar to a ball. For matter to gather together in a form other then that of a sphere, and maintain that shape, it has to have uneven amounts of pressure applied to it at different points. A disc-shaped earth would require a very specific and even amount of pressure, applied exactly parallel to both sides of the earth. Too much, and you'd get a thin pancake. Too little, and the internal pressures would force it in the direction of a sphere shape.
Because the illusory gravity causes the stuff on top to press the stuff below. Like, imagine you were in a rocket accelerating at a very high rate; you would be smushed to the back wall. Similarly, rocks are smushed under the Earth, this creates friction which is released as heat, and the heat melts the rocks.
Also, the Earth isn't warm solely because of friction. There're also radioactive materials in the crust that create a significant amount of heat.
That doesn't answer the other parts of that question though. If the pressure was merely on the top half of the earth, then why doesn't the stuff in the center simply get displaced to the other side. In other words, at the very least, the magma should be coming out the other side. Worst case would be the earth begins to take a bowl like shape, and eventually breaks in half, or forms a hole in the center.
Now that being said, if there's a pressure on the opposite side of the earth, which keeps matter distribution from the center even between our side and the other side, what is it? It would have to exhibit a huge amount of pressure. The FE theory says that the sun and moon give off only small amounts of gravity. So what in the universe could push the earth from behind forcefully enough to keep it flat and even, while the earth is traveling at many times the speed of light, due to its constant acceleration towards the dark matter.
Also, I didn't really ask this, but the earth has signifigantly more mass then the sun and moon. If the sun and moon produce gravity at such pathetically small sizes, then why does the earth not produce gravity?
You claim there are radioactive materials that increase the earth's temperature from below the surface. Why don't huge amounts of this material come to the surface with volcanic activity? If it does, why wasn't 90% of the population near Mt. Everest striken with deadly amounts of radiation?
It takes a huge amount of pressure to cause radioactive materials to naturally produce nuclear explosions. The pressures on the earth would have to be signifigantly greater then that of the sun to maintain it's shape, so why haven't these pressures caused the earth to become a thermonuclear torch, a.k.a. a sun?
Nuclear reactions could totally explain it. Nuclear reactions release lots and lots of energy -- the only reason the Earth doesn't evaporate in RE theory is that the sun -- which is big -- is so far away. Bring the sun closer, and you can make it a lot cooler an still have it heating us as much as it does.
Sounds like you're thinking the sun is the same thing the RE theory has but only 32 miles in diameter.
Assuming that's true, the amount of pure heat put out by the sun could be explained by that, but not the other radiation. Some types of radiation would actually be increased. I'm sure you've seen films and reenactments of nukes going off that were a few hundred kilotons. From 20 miles away, those things look like camera flashers. If you placed a constantly recurring 1000 megaton thermonuclear explosion a few thousand miles away, and you had direct line of sight to it, you'd go blind just by being in the area.
You never answered my question regarding why the sun has gravity, but the earth does not. I'm also wondering where such a small sun would get the fuel to burn for the last 5000 years as well.