The last supermoon of the year will illuminate the night sky in December. This celestial event occurs when the moon is at its closest point to Earth in its elliptical orbit, making it appear significantly larger and brighter. According to NASA, during a supermoon, the moon can appear up to 14% larger and 30% brighter than during the smallest full moon of the year.
Understanding the Supermoon Phenomenon
Supermoons occur several times annually, typically appearing in clusters. This December supermoon marks the conclusion of a series of three supermoons that took place during 2025. It provides a fantastic opportunity for sky watchers to experience the beauty of the night sky.
Viewing the Supermoon
The supermoon can be seen without any specialized equipment in clear night skies. Despite this, the differences can be subtle and might not be easily noticeable to the naked eye. The moon generally appears larger when near the horizon due to a phenomenon known as the moon illusion, which remains partially unexplained by experts.
Expert Insights
Astrophysicist William Alston, affiliated with the University of Hertfordshire, explains the augmented visual impact of a supermoon. He notes that while the supermoon effect is minimal, it becomes more pronounced against the background of the horizon.
Additional Effects of the Supermoon
Aside from its visual spectacle, a supermoon can also influence ocean tides. The proximity of the moon to Earth may result in slightly higher tides; however, these increases are often not perceptible to the average observer.
- Supermoon is visible in December, concluding a series of three in 2025.
- Appears 14% larger and 30% brighter than the smallest full moon.
- Can be viewed without specialized equipment, best seen near the horizon.
- Might cause slightly higher tides, though hardly noticeable.
This December offers an excellent chance to witness the last supermoon of the year. Be sure to look up and enjoy the breathtaking sight it presents in the night sky.