The huge clouds of material erupting from the sun may share at least one feature with the fluffy white clouds scudding through Earth's skies — ripples of instability along one flank.

Night sky photographer Ruslan Merzlyakov captured bright blue-white noctilucent clouds dancing over Nykøbing Mors in Denmark just before dawn on July 1.

If your knowledge of clouds only extends to 'dull and grey' or 'white and fluffy', then prepare to be amazed by this cloud atlas. Nature also produces clouds in all shapes, sizes and colours.

The tallest clouds in the sky are the mighty cumulonimbus clouds, which can stretch up to an astonishing 50,000 feet, or 15,240 meters, high. These towering giants are the primary clouds ...

Did you ever take a picture of a landscape in which the dominating feature was the sky with slowly moving, fluffy white clouds, only to discover that the clouds did not record on your black-and-whi… ...

Night sky photographer Ruslan Merzlyakov captured bright blue-white noctilucent clouds dancing over Nykøbing Mors in Denmark just before dawn on July 1.