Earth's Super Dense Core

Earth is supposedly the densest planet in our solar system. This is despite the fact that we have found huge carbon and water reservoirs locked inside our planet. Mars, with its iron rich surface is supposedly less dense than Earth with its rocky surface. This is despite the fact that iron is more dense than rock.

The fact that our planet has a lot of light stuff in it is supposedly balanced out by a super dense core. What exactly this super dense core is made of, nobody knows. Some have speculated that it must be some sort of a crystal. Its properties have to be exotic and weird in order to make the data fit our current model of the world.

However, all of this is based on the assumption that gravity is a function of mass. The need for a super dense core is only there to explain the fact that Earth has a relatively strong gravitational field.

If gravity is a function of charge, as is the assumption in the capacitor model of gravity, then there is no need for a super dense core. And if our planet is hollow, things become simpler still. Seismic data becomes easier to interpret, and the need for exotic materials and layers disappear.

Cross section of a hollow planet