Halos are caused by ice crystals in the air which are usually associated with high-altitude cirrus clouds. These crystals ...

The ring of light seen around the sun in areas of southern Louisiana today is a rare atmospheric phenomenon known as a sun halo ... formations made of ice crystals. Sun halos can be seen mostly ...

On social media, various profiles are sharing a video from Austria. It depicts an extraordinary optical phenomenon captured ...

On social media, various profiles are sharing a video from Austria. It is there, on one of the ski slopes, that an ...

Certain weather conditions are creating light pillars and sun dogs. This only happens when temperatures fall below 14 degrees and we have some humidity.

A perfect sun halo in Cape Town, South Africa in October 2020. Photo: Alan Rudnicki EarthSky says: “Halos around the sun or moon are caused by high, thin cirrus clouds drifting high above your head.

If enough ice crystals are in the atmosphere for light to refract, it is possible to see a halo, or a complete circle around the sun or the moon. These optical phenomena are visible any time of the ...