>>4228674(start of part 14) The truest conception of the structure of Earth is based on the idea that when it was in a molten state during its formation, centrifugal force caused the heavier substances to be thrown outward, toward its periphery, in the form of rocks and metals, to form its outer crust, leaving its interior hollow, with openings at the poles, where centrifugal force was less and where there was less tendency to throw materials outward, which was greater at the equator, causing the bulging of Earth in this region. It has been estimated that as a result of Earth's rotation on its axis during its formative state, polar depressions and openings thus formed would measure about 1,400 miles in diameter.
Some of the original fire and incandescent materials remained in the center of Earth to form a central 'sun', much smaller, of course, than our Sun, but capable of emitting light and supporting plant growth. We shall also see that the Aurora Borealis and Aurora Australis that illuminate the sky over the poles come from this central 'sun' whose rays shine through the polar openings. Thus, if Earth was originally a ball of fire and molten metal, some of this fire remained in its centre, while centrifugal force as a result of its rotation on its axis caused its solid matter to be thrown toward the surface, forming a solid crust and leaving its interior hollow, with a fiery ball in its centre, forming the central sun, which provides illumination for plant, animal and human life. (end)
