300 Foxes and a Donkey's Jawbone
New research has uncovered a flaw in our understanding of the core — specifically, about the manner in which heat energy flows from the core and through the overlying mantle. The core is younger than the rest of the planet.
The deepest hole ever drilled is the Kola Super-deep Bore-hole at 12 km. That's less than 2% of the radius of the Earth. There are no direct observations of the Earth's interior, nothing empirical, it's entirely theoretical.
The mass of the Earth has never been directly measured. It's calculated using the radius of the Earth, the value of g we get from a ball drop experiment (acceleration due to gravity), and the gravitational constant, G.
We have developed a 3D spherical hollow Earth model (SHEM). If the Earth has experienced radial shrinkage and it's diameter decreased, we can so some simple calculations to figure out what the original radius was.
"The earth with her bars" is how Jonah described the pillars of the earth when he was in the belly of hell, possibly in the place which we refer to as Abraham's bosom. Jesus also went here after the crucifixion.
"The beams of his chambers" isn't poetry. Well, yes it is poetry, but it's not poetry for poetry's sake. This describes the pillars of the
"The pillars of the earth" are incorporated into a 3D model of a spherical Earth in which they're part of Earth's internal structure. They don't require us to believe that the Earth is flat.
The popular science "liquid outer core" is speculative at best, and there is no reason why it can't be open space. The P-wave shadow zone is the great gulf of which Jesus spoke in Luke 16:26.
The lowest hell is the core of the Earth which was kindled when God cursed the Earth. It's been consuming the Earth ever since then. The Earth is melting from the inside out.
Sheol refers to life beyond the grave, quite literally an underworld realm of the dead. It's also modified in a variety of ways which can be grouped to correspond to the main regions of the interior of the Earth.