"Supermoon" is the overly dramatic modern way of telling mainstream sky watchers that the moon is at perigree this Saturday, meaning it's nearer and therefore larger in the sky than usual.
In fact, it's the closest most of us will get to the moon without assistance from the Russian space program or Richard Branson, with this weekend's full moon coinciding with its nearest pass of Earth this year, thanks to our satellite's elliptical orbit.
The full moon will be some 16 per cent brighter at its peak this Saturday, and our tides will be higher as a result too. So if you're somewhere coastal the water will reach annual highs and lows this weekend as well. [Space]
Image credit: The Moon from Shutterstock