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en.wikipedia.org/wiki/Halo_(optical_phenomenon)

Halo (from Greek ἅλως, halōs) is the name for a family of optical phenomena produced by light interacting with ice crystals suspended in the atmosphere. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. Many of these are near the Sun or Moon, but others occur elsewhere or even ... called "halo", which appears as a large ring around the Sun or Moon with a ...

earthsky.org/space/what-makes-a-halo-around-the-moon

Nov 14, 2016 ... A large ring or circle of light around the sun or moon is called a 22-degree halo by scientists.

weather.com/news/news/sun-halos-florida-20140416

Jun 26, 2014 ... How are they different from sun dogs? ... Scientifically, halos are called "22 Degree Halos" because the two refractions bend the ... The old weather saying " Ring around the moon means rain soon," contains a little bit of truth.

www.huffingtonpost.com/2013/05/15/ring-around-the-sun-2013_n_3279175.html

May 15, 2013 ... Catch that odd ring around the sun earlier this week? Many people in the New York tri-state area spotted the circular halo, but the phenomenon ...

miami.cbslocal.com/2013/05/13/ring-around-the-sun-what-does-it-mean

May 13, 2013 ... Monday, a halo formed around the sun shining over South Florida. ... reflect and refract light in such a way as to cause a ring around the sun.

www.universetoday.com/18568/ring-around-the-sun

Have you ever looked up and noticed that there's a big ring around the Sun? These rings ... One of the most common ones is called a 22° halo. They get this  ...

science.nasa.gov/science-news/science-at-nasa/2002/24oct_sunrings

Oct 24, 2002 ... Not only was there a halo around the Sun--the so-called "22o halo," which sky watchers often see--but also there was an enormous ring of light ...

www.reference.com/science/ring-around-sun-called-ef04fd09dc76dee2

When a ring appears in the sky around the sun, it is called a halo. Halos have also been observed around the moon in the night...

www.crystalinks.com/sundogs.html

What are those colorful rings around the Sun? .... Another place to look for rare halos is in the realtime gallery: These luminous forms are called ice halos, ...

www.theweatherprediction.com/wxlore/e

WEATHER FOLKLORE: "A ring around the sun or moon, means rain or snow coming soon" APPLICABILITY: This lore most commonly works in the cool season ...