Perigee Full Moon Déjà vu

On Saturday night January 10th the full Moon will reach it's perigee, or closest point in it's orbit to Earth. This means that the full Moon will appear larger and brighter than any other Moon of the year.

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The perigee full Moon only happens once or twice a year. The brighter and wider appearance of the Moon is caused by it's elliptical orbit. It's because of this non-circular that the moon is 50,000km closer to Earth on one part of it's orbit than it is on the other.