"The moon orbits around the Earth in a sort of egg shape rather than a perfect circle, meaning that it sits at different distances from the Earth throughout the month. A supermoon is when the moon is within 90 percent of its closest point to the Earth (AKA its perigee) at the same as the the sun, Earth and moon are sat in a straight line,"
"ie. when there's a full moon. A supermoon can appear up to 14 percent larger and 30 percent more luminous than an average moon. An effect known as the 'moon illusion' can make it appear particularly large when it's close to the horizon. November's supermoon will be the closest full moon to Earth this year, meaning that it will be the biggest and brightest."
Three supermoons will occur this year, with the November 5 event being the second of the remaining two and the most dramatic. The November full moon, called the Beaver Moon, will coincide with Bonfire Night festivities and fireworks across cities. A supermoon happens when the Moon is within 90 percent of its perigee and aligns with Earth and Sun at full moon. Supermoons can appear up to 14 percent larger and 30 percent more luminous than average, and the moon illusion can enlarge its apparent size near the horizon. Some rain is forecast during the day on Wednesday.
Read at Time Out London
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