Final Supermoon of 2025 to Illuminate Skies on December 4
The last supermoon of the year, known as the Cold Moon, will be visible on December 4, appearing larger and brighter due to its proximity to Earth.
The final supermoon of 2025, referred to as the Cold Moon, is set to grace the night sky on Thursday, December 4. This event marks the third consecutive supermoon of the year. A supermoon occurs when a full moon coincides with its closest approach to Earth, making it appear up to 14% larger and 30% brighter than when it is at its farthest point.
The Cold Moon will reach its fullest phase at 23:14 UTC (6:14 p.m. EST) on December 4. Observers can best view the supermoon as it rises in the east around sunset, offering a striking visual as it appears near the bright star Aldebaran in the constellation Taurus.
No special equipment is required to observe the supermoon; clear skies will enhance the experience. While the size difference may be subtle to the naked eye, the moon often appears larger when near the horizon due to the 'moon illusion,' a visual phenomenon not yet fully understood by scientists.
Additionally, the supermoon may cause slightly higher tides, though the changes are generally minimal.