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 ...

The universe is huge, yet astronomers have looked at a few parts of the night sky over and over again ... beyond—have looked at the Magellanic Clouds, two mini-galaxies in our celestial ...

I love the different forms they take. There are the puffy cotton ball-like clouds against the blue sky — those iconic cumulus clouds. There are curlicue cirrus clouds wafting high above made of ice.