What astronomical phenomenon occurred on January 3, 2026, involving the first full moon of the year?

The astronomical event that graced our skies on January 3, 2026, involving the year's first full moon, was a supermoon. This captivating phenomenon occurs because the Moon's orbit around Earth isn't a perfect circle; it's an ellipse. As a result, there are times when the Moon is closer to our planet (a point called perigee) and times when it is farther away (apogee). A supermoon happens when a full moon phase nearly aligns with the Moon's perigee.

When the Moon is at its perigee during a full moon, its closer proximity makes it appear noticeably larger and brighter in our night sky. While the term "supermoon" itself isn't an official astronomical designation, having been coined by an astrologer in 1979, it has become a popular way to describe what astronomers refer to as a perigee syzygy. During such an event, the Moon can appear up to 14 percent larger and 30 percent brighter than the faintest full moon of the year, which occurs when it's at its most distant point.

The full moon on January 3, 2026, was traditionally known as the "Wolf Moon," a name often given to January's full moon. This particular Wolf Moon was also special because it coincided with Earth's perihelion, the point in our planet's orbit when it is closest to the Sun. This alignment meant that the Earth-Moon system received a slight additional boost of sunlight, contributing to an even brighter appearance for this supermoon. It was also noted as the last in a series of four consecutive supermoons.