What is another word for solar halo?
Pronunciation: [sˈə͡ʊlə hˈe͡ɪlə͡ʊ] (IPA) 
A solar halo is a natural optical phenomenon that occurs when sunlight is refracted by ice crystals in the atmosphere, creating a circular halo or a bright ring around the sun. There are several synonyms for the term solar halo, including a sun halo, a 22-degree halo, a corona or a nimbus. Some other terms that are often used to refer to similar atmospheric phenomena include parhelia, which are also known as sun dogs, and circumzenithal arcs, which are arcs of light that resemble upside-down rainbows. These optical effects are not only stunning to see but can help scientists understand the properties of the Earth's atmosphere.
