[Continue…] These results strongly imply that the electrons and nuclei create a lot of heat transfer chains in the cosmos. Once a hot electron finds a cold electron, the heat transfer starts regardless of the distance. A lonely sun doesn't shine. We are waiting for the distant stars to find us rather than catching a roaming photon from a star. Therefore, we cannot see the distant past. A piece of evidence is that the outer space is dark. It is a paradox to the prevalent views that the present images of stars were produced years ago.