Stargazers in parts of Europe were stunned by an unusual sight on Monday evening: a large, glowing blue spiral in the sky.

A rare cloud formation resembling waves in the sky has been seen across North Yorkshire. The billowy phenomenon was captured ...

An isolated heavy storm or two is possible Wednesday evening, but rain chances largely remain at bay as highs sharply rise over the next three days.

But think of dark clouds behind which the sun is hidden. As a cloud comes out from behind the dark clouds into a bright blue sky, it is edged with a silvery lining. Thus we are moving from ...