The 22 degree halo is an optical phenomenon caused by sunlight refraction in tiny hexagonal ice crystals within a thin layer of cirrostratus haze. Easily explained and yet it is something to behold.
Photo taken on my iPhone outside my workplace.
Robb: One time she told me the sky is blue because we live in the eye of a blue-eyed giant named Macumba.
Bran: Maybe we do.