What is the Halo Around the Sun or Moon?

Sometimes when you look up in the sky you may see what appears to be a circle around the sun or moon.  This is what people call a halo around the sun or moon.

Seeing a halo around the sun or moon, similar to seeing a rainbow, does not happen very often and feels special when you see it.  You never know when you are going to see it and you never know how long it is going to last.  I have heard stories or rumors about that a halo around the sun means that a storm is on the way.  I wonder if that is true? Continue reading