There's a documentary with this title, haven't seen it yet but would like to see it. The premise of the film is, among others, that the earth's axis would wobble (therefore unstable seasons) causing many other things to happen if the moon did not exist, but it does not seem obvious to me at all. Why would the axis wobble? It wobbles already for sure, giving rise to the Age of the pisces and the Age of aquarius etc as the axis passes through constellations. But why would the moon make a difference? Any dynamic simulation of this effect? Any youtube video or software to demonstrate it?