Temperature map of our Earth analogue as a function of distance form the centre and time. The black dashed line indicates the size of the core, while the planetary radius is indicated with a thin white line. The accretion of cold material, unable to heat to differentiation by ²⁶Al decay, is visible as a blue clump between 2 Myr and 3.5 Myr. The planetary radius falls significantly as the water ocean is lost to the run-away greenhouse effect after 3.4 Myr. The termination of accretion after 5 Myr is followed by a slow cooling first and then by rapid cooling when the gas envelope escapes after 7 Myr. This leads to a decrease of the mantle temperature towards the solidus value where the heat conductivity due to convective heat transport drops dramatically. The core remains in a hot state after mantle cooling, since the hot outer core stabilizes the liquid metal against convective heat transport.