A 2014 satellite image captured a rare glimpse of a massive, eerily circular ring of clouds that formed slap-bang in the ...

A colossal and unusually symmetric cloud ... formed ring appearing in isolation over open ocean is exceptionally rare. The discovery not only adds to our visual catalog of Earth’s upper ...

This striking satellite image reveals a giant, near-perfect cloud circle ... Earth Observatory. "As the warm air became buoyant and rose, cumulus clouds and eventually patches of light rain ...