KnowraHalo (optical phenomenon)Linked fromLinked fromThe 7 pages that link to Halo (optical phenomenon), each with the reason it gives.All 7Broader topic 1Related 3Narrower topic 1Compared with 2Cirrus cloudRelated: Cirrus ice crystals can produce halos visible around the Sun or Moon.Cirrostratus cloudRelated: Hexagonal ice crystals in cirrostratus commonly refract light into 22-degree halos.Cirrostratus nebulosusRelated: Cirrostratus nebulosus commonly reveals itself through a halo around the Sun or Moon.