These celestial patterns, often appearing as luminous rings or arcs, are optical phenomena resulting from the interaction of light with ice crystals suspended in the atmosphere. A common manifestation is observed surrounding the sun or moon, presenting as a bright halo. This effect occurs when light is refracted and reflected by hexagonal ice crystals within cirrus or cirrostratus clouds.
The observation of these atmospheric occurrences provides valuable insights into atmospheric conditions, specifically the presence, shape, and orientation of ice crystals at high altitudes. Historically, their appearance has been interpreted as a sign of approaching weather changes, though modern meteorology offers more precise predictive tools. Their aesthetic appeal has also captivated observers for centuries, inspiring artistic and cultural interpretations across various societies.
