A "supermoon" will grace the skies this weekend, with the satellite expected to appear in its biggest and brightest form this year.
The phenomenon, known as a perigee full moon, occurs when the Moon reaches its closest point to Earth.
At this time it can appear up to 14% larger and 30% brighter than when it is farthest from the planet, experts said.
The Moon is expected to appear at its best in the UK in the early hours of tomorrow morning, at around 4am, Dr Robert Massey, of the Royal Astronomical Society, said.
UK skywatchers will then miss the Moon when it hits perigee, the point in its orbit when it is closest to Earth, which is expected at about midday on Sunday.
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