How is the hot, slowly cooling core of our planet affecting the surface energy budget? (judithcurry.com)
The concentration of dust would grow into a number of cores of planets (protoplanets), and these cores evolve into planets through numerous collisions and coalescences. (alma-telescope.jp)
On Earth, molten rock sloshes around the outer core of the planet over time, causing electrically conductive fluid moving inside to form a magnetic field. (sciencenews.org)