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Halo (optical phenomenon) - Wikipedia

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

A 22° halo around the sun as viewed in the sky over Annapurna Base Camp, Annapurna, Nepal. From top to bottom: A circumzenithal arc, supralateral arc, Parry arc, upper tangent arc, and 22°...

Why a halo around the sun or moon? | Space | EarthSky

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.

What Are Sun Halos? | The Weather Channel

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

Jan 12, 2015 ... If That Is a Sun Halo, Then What Is a Sun Dog? ... The old weather saying "Ring around the moon means rain soon," contains a little bit of truth.

22 Degree Halo: a ring of light 22 degrees from the sun or moon

ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/opt/ice/halo/22.rxml

A halo is a ring of light surrounding the sun or moon. Most halos appear as bright white rings but in some instances, the dispersion of light as it passes through ...

22 degree Halo, 22° Halo, 22° circular Halo - Atmospheric Optics

www.atoptics.co.uk/halo/circular.htm

The halo is always the same diameter regardless of its position in the sky. ... Much smaller coloured rings around the sun or moon are a corona produced by ...

Solar Halos, Sun Dogs, Sun Spokes, Rainbows - Crystalinks

www.crystalinks.com/sundogs.html

A solar halo - also known as a nimbus, icebow or gloriole - is an optical phenomenon produced by ice crystals ... What are those colorful rings around the Sun?

Why does this phenomenon occur? (Circle rainbow around the sun ...

www.quora.com/Why-does-this-phenomenon-occur-Circle-rainbow-around-the-sun

It is not a rainbow, rather a 22° halo. The name is such because it forms a circle with a radius of approximately 22° around the Sun. Similar phenomenon may ...

What causes a halo around the sun? | Science Focus

www.sciencefocus.com/qa/what-causes-halo-around-sun

Sep 15, 2015 ... The appearance of a huge, perfectly circular halo round the sun in Mexico earlier this year sparked rumours of the impending end of the world.

Ring Around The Sun Explained: What Causes Circular Halo ...

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 ...

Ring Around the Sun - Universe Today

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

Dec 24, 2015 ... Have you ever looked up and noticed that there's a big ring around the Sun? These rings are caused by ice crystals within thin cirrus clouds, ...