A "supermoon" is pictured through a break in the clouds, beyond one of the mythical 'Liver Birds' on top of The Royal Liver Building in Liverpool, north-west England on November 14, 2016.
The phenomenon happens when the moon is full at the same time as, or very near, perigee -- its closest point to Earth on an elliptical, monthly orbit. It was the closest to Earth since 1948 at a distance of 356,509 kilometres (221,524 miles), creating what NASA described as "an extra-supermoon". / AFP / PAUL ELLIS        (Photo credit should read PAUL ELLIS/AFP/Getty Images)