2007-12-25 08:58:23 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
There are many different halo phenomena but the commonest is the 22° halo which is a ring around the sun or the moon. This is caused by the refraction of light through ice crystals in cirrostratus cloud. The ice crustals have faces at 60° to each other, the commonest shape of ice crystals. Outside polar regions, the presence of a halo is diagnostic of cirrostratus cloud.
There is a good explanation of all the different halo and other atmospheric phenomena together with some wonderful pictures on this site:
http://www.meteoros.de/indexe.htm
2007-12-25 09:07:05 · answer #1 · answered by tentofield 7 · 1⤊ 0⤋
Moon Halo Effect
2016-11-14 09:04:09 · answer #2 · answered by mel 4 · 0⤊ 0⤋
This Site Might Help You.
RE:
what makes the halo effect around the moon sometimes?
2015-08-07 19:17:58 · answer #3 · answered by Celina 1 · 0⤊ 0⤋
Caused by high-altitude ice crystals in our atmosphere. Each crystal acts like a tiny prism that focuses the moonlight. Usually the ring around the moon (or sun) indicates that a change in the weather is coming, usually rain or snow.
2007-12-25 09:06:30 · answer #4 · answered by Anonymous · 1⤊ 0⤋
it has to do with water vapor in the atmosphere to be more specific ice crystals refracting the moons light
2007-12-25 09:14:23 · answer #5 · answered by Loren S 7 · 0⤊ 0⤋
Ice crystals!
http://en.wikipedia.org/wiki/Halo_(optical_phenomenon)
2007-12-25 09:01:55 · answer #6 · answered by Lori D 4 · 1⤊ 0⤋