The night sky put on a stunning display this week. The Beaver Supermoon reached its peak brightness on Wednesday, November 5. This event marked the second in a trio of consecutive full supermoons for 2025. Observers across the United States reported an exceptionally large and bright moon.

This lunar event is not just visually striking. It holds significant cultural and astronomical importance. According to NASA, the moon’s close approach made it appear significantly larger and brighter than an average full moon.
A Closer Look at the Supermoon Phenomenon
So, what made this moon so special? A supermoon occurs when a full moon coincides with perigee. Perigee is the point in the moon’s orbit where it is closest to Earth. During this event, the moon was approximately 221,817 miles from our planet.
That is notably closer than the average distance of 238,000 miles. This proximity made the lunar disk appear up to 14% wider. It also shone up to 30% brighter in the night sky. The Old Farmer’s Almanac confirmed this as the year’s closest lunar approach.
The visual effect is most dramatic as the moon rises or sets near the horizon. A trick of the mind known as the “moon illusion” enhances its apparent size. This optical illusion has been observed for centuries but remains not fully understood by science.
The Cultural Significance Behind the Name
The name “Beaver Moon” has deep historical roots. It originates from traditions of Native American tribes and early colonial settlers. November was the time to set beaver traps before the swamps froze.
This ensured a supply of thick pelts for winter clothing. The name also references the behavior of beavers themselves. They become active in finishing their dam and lodge constructions before winter.
This full moon is also sometimes called the Frost Moon. Different cultures have their own names tied to seasonal changes. The supermoon adds a modern astronomical twist to this ancient lunar calendar marker.
The Beaver Supermoon offered a brilliant reminder of our place in the cosmos. Its remarkable brightness was a direct result of celestial mechanics. This natural spectacle connects modern skywatchers to centuries of human tradition and observation.
Dropping this nugget your way
What made the November 5th moon a supermoon?
It was a supermoon because it was full at the same time it reached perigee, its closest point to Earth. This made it appear larger and brighter than a typical full moon.
Why is it called the Beaver Moon?
The name comes from Native American and colonial traditions. November was the time to trap beavers for their winter pelts, and beavers are busy completing their lodges before the frost.
When was the best time to see it?
The moon reached peak illumination at 8:19 AM EST on November 5. However, it appeared full to the eye on both the nights of November 4 and 5.
How often do supermoons occur?
Supermoons are not extremely rare. Several can happen each year. 2025 is seeing three full supermoons in a row, with the final one coming on December 4.
Was this the biggest supermoon of the year?
Yes. The Beaver Moon was the closest full moon to Earth in 2025. Its distance of about 221,817 miles made it the largest-appearing supermoon this year.
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