Halo (optical phenomenon)
it.wikipedia.org/wiki/Alone_di_22°
Halo (from Greek ἅλως, halōs [1]) is the name for a family of optical phenomena. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. These are part of the sky. Halo types are the circular halo (well called the 22nd halo), light pillars and sun dogs, but there are many more; some of them fairly common, others (extremely) rare.
(Wikipedia)
Halo (optical phenomenon)
it.wikipedia.org/wiki/Alone_di_22°
Halo (from Greek ἅλως, halōs [1]) is the name for a family of optical phenomena. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. These are part of the sky. Halo types are the circular halo (well called the 22nd halo), light pillars and sun dogs, but there are many more; some of them fairly common, others (extremely) rare.
(Wikipedia)