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  2. 22° halo - Wikipedia

    en.m.wikipedia.org/wiki/22°_halo

    A 22° halo is an atmospheric optical phenomenon that consists of a halo with an apparent diameter of approximately 22° around the Sun or Moon. Around the Sun, it may also be called a sun halo. [1] Around the Moon, it is also known as a moon ring, storm ring, or winter halo.

  3. What Causes a Ring to Appear Around the Moon? - Treehugger

    www.treehugger.com/what-causes-ring-around-the-moon-5211951

    Also known as a lunar halo, a bright white ring of light around the moon can appear anytime during the lunar calendar and at any time of year, especially in winter.

  4. What is a moon halo? | Space

    www.space.com/moon-halo

    The moon's halo or lunar halo is an optical illusion that causes a large bright ring to surround the moon. This striking and often beautiful halo around the moon is caused by the refraction of...

  5. Have you ever looked up and spotted a large ring of light around the sun or moon? Scientists refer to these as 22-degree halos. They got that name because the radius of the circle is always...

  6. What Causes a Ring to Appear Around the Moon? - Treehugger

    www.treehugger.com/what-causes-a-ring-to-appear-around-the...

    A lunar halo, or ring around the moon, is more frequently seen than other lunar sights. ... Also known as a lunar halo, a bright white ring of light around the moon can appear anytime during the ...

  7. What causes a ring or halo around the Moon? - BBC Sky at ...

    www.skyatnightmagazine.com/space-science/moon-ring-halo

    A ring or halo around the moon tonight? That lunar halo is caused by the refraction of moonlight by ice crystals, creating a circle effect.

  8. 22-Degree Halos: Defining A Lunar Halo And How It Occurs

    ownyourweather.com/what-causes-a-ring-around-the-moon

    A Lunar Halo, also known as a 22-Degree Halo, is a hazy ring that occurs around the moon at a radius of approximately 22 degrees. It results from the moon's light being refracted by ice crystals in Cirrus clouds in the upper troposphere at an altitude of approximately 6000 meters or 20 000 feet.

  9. Occasionally, especially on cold winter nights, I see a large ...

    www.astronomy.com/science/occasionally-especially-on-cold...

    Spying a bright Moon with a ring around it high in a cold winter sky is a beautiful, and even spooky, sight. But you can spot Moon halos any time of year — and the same phenomenon occurs...

  10. Why does the moon sometimes have a 'halo'? - Live Science

    www.livescience.com/planet-earth/why-does-the-moon...

    If you've ever looked up at the full moon in the night sky, you may have noticed a large halo of light around it. But why does this lustrous ring sometimes encircle our natural satellite?

  11. Why Do We Sometimes See a Ring Around the Moon?

    www.universetoday.com/20402/ring-around-the-moon

    This ring surrounding the Moon is caused by the refraction of Moonlight (which is really reflected sunlight, of course) through ice crystals suspended in the upper atmosphere between 5-10 km in...