Bradleigh Hancock, 47, was driving along the A62 towards Marsden, West Yorkshire, with his family when they spotted a ...

Cumulus clouds are complex enough; those deep clouds “have 100 times the complexity,” he said. In his view, the U.S. is devoting a tremendous amount of effort to cloud research; it’s only up ...

Nacreous clouds appear as 'rainbow clouds' high in the sky above polar regions. ... Tuomas Olkkonen snapped these photographs of the polar stratospheric clouds above Jyväskylä, Finland. Image 1 of 5 ...

Italy's Mount Etna produced a spectacularly explosive eruption Monday morning, sending a ripple of reddish clouds down from its summit. The soaring ash rose to form a mushroom cloud high above ...

That's because they were forming from the exhaust of the rocket more than 200,000 feet in the air, so while the sun had not risen for us, it was able to reflect off those clouds. Hence the term ...