The astronomical news this month is all about the "Supermoon" happening on the night of 14th November 2016. But what is a Supermoon, and why is it different to any other Full Moon? Let's start simple, with what it means to have a Full Moon. All this means is that the Moon is in the point of its orbit around the Earth which puts it directly opposite the Sun in the sky. As a result the side of the Moon we see is fully illuminated by the Sun, and the Moon rises at sunset (and sets at sunrise) making it visible all night. Diagram illustrating how the phase of the Moon depends on its position in its orbit around the Earth relative to the location of the Sun. In this diagram the Sun is not shown, but it is to the right, directly above the point on the Earth labelled "Noon". Credit: Wikimedia, Thomas Splettstoesser . So obviously, the Full Moon happens once in every lunar orbit around the Earth (well technically slightly less, because meanwhile the Earth is also orbit...