What's Happening?
On the night of November 4, 2025, residents of St. Louis witnessed a lunar halo, a bright ring around the moon caused by light refracting through millions of tiny ice crystals in high-altitude clouds.
This phenomenon, known as a 22-degree halo, occurs when light enters one face of an ice crystal and exits through the opposite face, creating a ring with a radius of 22 degrees. The event was widely observed and shared by local residents, adding to the anticipation of the upcoming supermoon.
Why It's Important?
Lunar halos are a fascinating natural phenomenon that can spark interest in meteorology and atmospheric sciences. They provide an opportunity for public education about the interaction between light and atmospheric conditions. Such events can also enhance community engagement, as people share their observations and experiences. The visual spectacle of a lunar halo can inspire artistic and cultural expressions, contributing to a broader appreciation of natural beauty.
