Fallstreak holes, also called cavum, sometimes occur when airplanes fly through certain clouds high in the atmosphere.

Want to learn how to make a cloud? I'll show you how here, in an experiment you can do with everyday materials at home!

Theresa Birgin Lucas' photo of the mystery cloud formation. Atmospheric scientists are unsure what type of cloud this is, or even if the picture is real, but have suggested it may be an asperitas ...

Summer is a time when many weary and sleep-deprived amateur astronomers and skywatchers put their binoculars and telescopes into hibernation. Depending on your location, the night sky may not get dark ...

On a road trip from Phoenix to Washington D.C., you may notice the sky is falling — or at least the clouds are. We often admire the shapes and sizes of those overhead puffs, but the height of ...

And, finally, the observed stability of tropical temperatures argues that increased clouds provide even greater negative feedback to CO2, and a cloud expert who has done enough research for 80 Ph ...

On Wednesday morning over the Florida sky, we got to witness this amazing glow due to increased water vapor from a Space X launch. The noctilucent clouds were visible well before the first ...

This year’s NASA GLOBE Cloud Challenge lasts through Feb. 15. Anyone can participate — all it takes is a smartphone or computer and an eye toward the sky.