Virginia residents spotted a rare surprise on the horizon on Aug. 9, prompting dozens of photos online. A vibrant rainbow cloud appeared in the sky, morphing as it rolled over the state. One viewer ...

The skies above Dublin, Ireland, and northeast England became a spectacular site of "utterly transfixing" iridescent lights Thursday morning. Rare "rainbow clouds" formed in the early morning, ...

A spectacular movement of rainbow-colored clouds has been spotted in the skies above Scotland. The rare view was captured near Nairn Beach on Christmas Eve, shortly after sunrise around 9 a.m. local ...

HAMILTON, Va. — It's safe to say we have all seen a rainbow before. The bright and colorful band that shows up following rain storms can be stunning. Sky watchers in Hamilton, Virginia, were treated ...

A stunning iridescent cloud mesmerised and puzzled locals in one Chinese province earlier this week. Footage filmed in the city of Haikou in the Hainan Province of China shows a cloud coloured in the ...

“Rainbow clouds” appear because of cloud iridescence, according to the National Oceanic and Atmospheric Administration. The small water droplets or ice crystals in the cloud must be relatively the ...