Originally Posted by albie
But we are talking about DEEP underground. It seems the deep air is denser.
This theory doesn't hold when you pass the center of gravity. Then again, air will become less dense as should be obvious with a basic understanding of physics
The key to understanding Hollow Earth theory is understanding what would be different from a physics perspective if the center of gravitational pull was NOT the center of the earth but rather an electromagnetic coil-like strip about 400 miles underneath the earth's surface.