center of the earth

(geology forum)
I would like to explore briefly, whether or not our current theories yield the best picture. Magnetic field, gravity, density, seismic wave data results, and some of the basics having to do with how we understand what is right beneath our feet. How do we know it is hot there? Could Newton's assumptions that things get denser, etc., as we get down towards the center be say, only applicable so far down? Could the seismic waves be telling another story? This was too big to fit in an existing thread, where I brought it up, on Walt's ideas, so lets look at it here.

Thread copied to the center of the earth thread in the Geology and the Great Flood forum, this copy of the thread has been closed.

Thread moved here from the Proposed New Topics forum.