And the 'Supermoon' - the nickname for a perigee full moon, closer to the Earth than usual - could cause tides to rise around the world as the moon's close 'fly past' exerts 42 per cent more tidal force.
The moon will appear bigger and brighter - sky-watchers promise this 'supermoon' will be 16 per cent brighter than most when it begins today at 3.35pm GMT, 11.35am EDT. "
