A strange swirl in the sky seen over much of Britain and Europe this week wasn’t the result of alien activity but rather a ...

People across Europe were pretty confused last night, after a giant blue swirl appeared in the sky, lasting several minutes.

A strange blue spiral lit up the sky over Europe on Monday night (March 24), with residents of the UK and other countries speculating on its true nature on social media.

Have you ever wondered how clouds stay in the sky? Here's your answer, and by the way, the weight of an actual cloud might ...

You know that beautiful, clear blue sky over Rochester? It’s always a welcome sight—when it happens. But have you ever noticed the thin white streaks that sometimes crisscross the sky? Many people ...

NASA's Terra satellite was zipping over the Gulf of Mexico when one of its instruments snapped a photo of some odd-looking clouds. The clouds looked like someone had taken a hole punch to the sky.

A woman in Calgary, Alberta, Canada, saw a strange, wavy cloud in the sky ... These waves in the sky are formed similarly to ocean waves, where high winds blow over the water, sculpting the ...

DID you see these weird clouds in the York sky this morning ... "Stunning mammatus clouds over Huntington road this morning." Fellow club member Kieran Delaney also shared a photo of them ...