A supermoon occurs when the moon approaches the closest distance to Earth in its 27-day orbit. During tonight's Hunter's Moon, it will be the closest supermoon at just 221,937 miles from Earth.
'A supermoon means that the Moon is a little closer to us, it will appear slightly bigger in the sky,' explains Anna Gammon-Ross, senior planetarium astronomer at the Royal Observatory Greenwich.
The best time to see the Hunter's Moon will be just as it rises over the Northwestern horizon from 18:02 BST, with favorable weather for viewing.
The Hunter's Moon, named through a traditional system from the Old Farmer's Almanac, symbolizes the end of harvest and is the most impressive full moon of the year.
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