Supermoons are a spectacular celestial event that captures the imagination of skywatchers worldwide. When the full moon appears larger and brighter than usual, many wonder what causes this phenomenon and whether it has any significance. In October 2025, we’re treated to a rare series of supermoons, along with other astronomical sights like comets and meteor showers. Keep reading to learn what supermoons are, how often they happen, and why they’re worth watching.
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What is a supermoon?
A supermoon occurs when a full moon coincides with the moon's closest approach to Earth, called perigee. This makes the moon appear up to 14% larger and 30% brighter than a typical full moon. The effect is most noticeable when the moon is near the horizon, where it can look especially impressive.
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How often do supermoons happen?
Supermoons happen roughly 3 to 4 times a year. The exact timing varies because the moon's orbit is elliptical, meaning its distance from Earth changes slightly each month. In October 2025, we’re experiencing a series of supermoons, including the Harvest Moon, which is a special full moon near the autumn equinox.
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Do supermoons affect weather or nature?
While supermoons are visually striking, they don’t have a significant impact on weather or natural events. However, they do influence ocean tides, causing higher high tides and lower low tides. This can affect coastal areas and marine life, but it’s a natural part of the lunar cycle.
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Why is this year's supermoon special?
This year’s supermoon is notable because it’s part of a series of three supermoons in October, including the Harvest Moon. Additionally, the moon will appear larger and brighter than usual, making it a perfect time for skywatchers to observe and photograph. The presence of other celestial events, like the bright comet C/2025 A6 Lemmon and the Orionid meteor shower, adds to the excitement.
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How can I see the supermoon?
To see the supermoon clearly, find a dark spot away from city lights and look up at the night sky when the moon rises or is high overhead. The best viewing times are usually just after sunset or before sunrise, when the moon appears larger near the horizon. Using binoculars or a camera with a zoom lens can enhance your experience.
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Are supermoons dangerous or harmful?
Supermoons are completely safe to observe. They do not pose any physical danger. Some people believe supermoons can influence human behavior or cause natural disasters, but there’s no scientific evidence to support these claims. They are simply a beautiful astronomical event to enjoy.