A perfect lunar halo glowing over a quiet night sky 🌕 This stunning 22° halo forms when moonlight passes through millions of ice crystals high in the atmosphere — creating a celestial ring shaped by light and ice. | AstroNature

A Lunar Halo Above New York What you're seeing is a 22° lunar halo — an optical phenomenon that occurs when moonlight is refracted through millions of hexagonal ice crystals suspended in thin, high-altitude cirrostratus clouds. The halo forms a perfect ring around the Moon, and the brighter side arcs you see are called paraselenae or “moon dogs,” caused by the same ice crystals bending the light. This effect doesn’t depend on location .. it can happen anywhere around the world if the atmospheric

The 22º halo is not uncommon; however, it's always awe-inspiring! Here's how it happens! | Meteorologist Eddie Sheerr