The Godheart is basically the equivalent of the Sun. It is stationary in the sky (and indeed underground). Analogous to a real heart, it beats once a day, sending its energy through the Starlines. As a result, day and night transition quickly and abruptly with a loud 'whoosh' which can be heard throughout the whole World. From the ground, it looks the same as our real sun. At night the residual energy contained inside it makes it glow a faint moon-like silver.