For a brief moment, the sky over Bismarck turned into a series of snow-covered hills. A rare form of clouds blossomed over ...

But few are fortunate enough to see Kelvin-Helmholtz clouds, which look like a pattern of ocean waves in the sky. Kelvin-Helmholtz clouds, also known as fluctus clouds, is a rare phenomenon that's ...

“Even though the sun has set in Gale Crater, the clouds are high enough in the atmosphere that the sun still shines on them, making them seem to almost glow in the sky,” wrote Alex ...

Who needs drones and aliens when you can have this in the sky,' added ... similar 'spaceship' cloud appearing in Sydney. The bizarre natural phenomenon formed over the ocean in Cronulla, in ...

These swirls, known as von Kármán vortices, are formed when clouds get caught up in an airflow that has been disrupted by a tall landmass, most often above an ocean, according to NASA's Earth ...

TAKAHASHI, Okayama Prefecture--A university lab is providing artificial intelligence-based probabilities on whether a sea of clouds will form around the “mountain castle in the sky” here.