Every miner knows: the deeper you dig, the warmer it gets. The standard explanation: Earth has a hot core. But this explanation has fundamental problems.
During construction of the Gotthard Tunnel, temperatures far exceeded predictions. The geothermal gradient is not uniform — it varies significantly by rock type and depth. If the heat came from a uniformly hot core, this would not be expected.
In Cellular Cosmology, heat comes not from below but from above — as cosmic aether radiation absorbed by the Earth's crust and converted into heat. The deeper the rock, the more radiation it has absorbed.
Geothermal heat is not proof of a hot core — it is evidence of cosmic radiation.