Curious about whether the clouds you see mean sunny skies, roaring storms or a stunning sunset? Here’s your guide to the ...

Why do some clouds look like cotton balls while others look like flying saucers? The shapes of clouds reveal different things about changing weather patterns.

Have you ever looked up at the clouds in the sky and wondered how they form? Understanding cloud formation is really important for studying weather patterns and making accurate forecasts. Those clouds ...

SEATTLE — Even a clear sky contains layers of wet and dry air, that is, layers with different humidities. You can’t see these layers unless the humidity is high enough for the moisture in the layer to ...

Ever looked up at the clouds and wondered where they came from? That's exactly what atmospheric researcher Lubna Dada studies at the Paul Scherrer Institute. She is part of an international project ...

Is your weather app predicting clouds? No need to pull out that umbrella just yet. Not all cloudy days are the same, or, not all clouds are the same to be exact. There are a number of distinguishing ...

A casual weather observer can make a general forecast just by looking up at the clouds. The types of formations can offer ...

The night sky can host a wide range of spectacular sights like the northern lights, meteor showers and comets, as well as ...

Mammatus clouds are pouchlike formations that hang from the base of storm clouds, signaling turbulence in the atmosphere but ...

Astronomers have struggled to explain why a long and thin cloud forms above Mars’s Arsia Mons volcano each year, until now ...

Mars is a planet of extremes—towering volcanoes, vast canyons, and colossal dust storms that can wrap the planet in a reddish ...