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 ...

No... these aren't storm clouds. They're tiny songbirds known as starlings. Starlings flock together in thousands. Their shifting movements are called "murmurations ...

Have you ever gazed up at the sky and seen clouds that resemble waves in an ocean? These aren't your everyday fluffy cumulus clouds or storm clouds. These are gravity wave clouds -- a fascinating ...

A recent video created from images captured by Curiosity shows clouds tinted red and green flowing though the sky over Mars. Captured using the rover’s Mastcam instrument on January 17 ...