Earth's core will eventually lose its internal heat over geological timescales
Geophysical and thermodynamic studies confirm that Earth's core acts as a cooling heat engine that gradually loses its internal thermal energy over geological timescales.
The claim that Earth's core will eventually lose its internal heat over geological timescales is a well-established geophysical fact supported by numerous studies on core thermal evolution, mantle convection, and geodynamo energetics (such as papers [0] and [4]). Therefore, the evidence clearly supports the claim.
M. Pozzo, C. Davies, D. Gubbins, D. Alfé. Thermal and electrical conductivity of iron at Earth’s core conditions. 2012. https://doi.org/10.1038/nature11031
The paper discusses the Earth's core as a heat engine driven by slow cooling and radiogenic isotope decay over geological timescales.
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M. Reshetnyak. Evolution of the inner core of the Earth: consequences for geodynamo. 2019. https://doi.org/10.22364/mhd.55.1-2.21
The evolutionary model explicitly includes the cooling of the liquid adiabatic core and future projections of thermal energy sources over billions of years.
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