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. Lab ...

Rare clouds could be seen from parts of the Highlands on Saturday afternoon. Called Kelvin Helmholtz, they resemble rolling ocean waves and similar patterns have been seen by astronomers on ...

This striking astronaut photo shows one of Russia's deepest lakes sandwiched between two halves of a volcano as its surface was transformed into a reflective sea of swirling clouds thanks to a ...

This striking satellite shot shows a pair of simultaneous phenomena painting parallel swirls in the sea and sky surrounding Bear ... a gap in the clouds is trailed by a series of interlinked ...

TAKAHASHI, Okayama Prefecture--Bitchu Matsuyama Castle here is transformed into a dreamlike “castle in the sky” this season ... as dawn broke over the city, a sea of clouds rose around ...

Mammatus clouds cover the sky over the Ernst-Taehlmann-Park housing ... A fogbow over the Arctic Sea at Svalbard, Norway. (Photo by: Arterra/Universal Images Group via Getty Images) Another ...