On the phone so won't try to even get to a ballpark but just thinking on the scale we are talking: a massive volume of a molten ball of rock with a thin crust I

On the phone so won't try to even get to a ballpark but just thinking on the scale we are talking: a massive volume of a molten ball of rock with a thin crust I believe it'd take a fucking lot of energy to have any cooling. Even more where it'd be radiating out to space and "lost".