earth's core - one or two?

IMO the core is constructed by gravity in a very different way than current theory suggests. This s because the center of the Earth is not it's gravity center. As anyone can see the mass of any sphere is distributed throughout the volume of the sphere. Given that gravity and mass are connected the gravity force will be distributed throughout the volume too. so, it seems to me the structure of the interior of a planet or star would be quite different than any known model now in existence. It seems to me the hollow Earth model is better than most models because the greatest force within a sphere like a star or planet would be nearer the surface than the center. The so called core has far less mass than current theory indicates.

I don't buy it for the Earth, The proto earth had to lose a lot of angular momentum. It would do it in two goes, first it spins off an equatorial sheet of half its mass along the line of the equator. It carries on collapsing inwards and then spins off a gobbet of material, of about one tenth of its mass. This would be Mars. There would also be a string of molten junk, which becomes our moon.

Now Mars has for certain been hit by something big, and that something wasn't travelling fast enough to tear the planet apart. Mars being smaller than the earth, cools more quickly but even if a number of these bits of gobbet went into orbit around it, and then fell in later to impact the planet, the interior should still have been plastic enough to let the gobbet core and the planet core combine into one. Yet the core of Mars looks very much like two cores. It's twisted round almost ninety degrees in its orbit.