What’s that strange ring around the sun? It’s not a rainbow—it’s an ice halo! Learn the science behind these rare phenomena and their significance in predicting weather.

The ring of light seen around the sun in areas of southern Louisiana today ... a sun halo can be seen. Much like how a rainbow is formed when light reflects in water," Tingler said.

According to weather lore, a ring around the sun or moon means rain or snow is ... Halos are often confused with lunar coronas, but the latter are rainbow-colored discs that form when moonlight ...