Lunar halo

A lunar halo is a captivating optical phenomenon that appears as a glowing ring encircling the moon. This natural spectacle occurs when moonlight interacts with ice crystals suspended in the upper atmosphere, typically within cirrostratus clouds. The halo often has a subtle, ethereal glow with a radius of approximately 22 degrees around the moon, showcasing delicate colors or a pearly white sheen. Lunar halos have long inspired folklore and are sometimes seen as harbingers of changing weather. Observing a lunar halo offers a glimpse into the fascinating interplay between light and the atmosphere.