Nacreous clouds, or ice polar stratospheric clouds, are a rare type of cloud that forms in very cold conditions and at high altitudes. They are known for their iridescent colors, which are created ...

At an early age, one of the first science lessons for most will probably be a lesson on the various types of clouds in the sky. However, it might surprise you to learn that cloud formations are ...

Strange "rainbow clouds" that look like a colorful portal to another dimension have recently appeared across northern skies. These nacreous clouds, also known as polar stratospheric clouds ...

Temperatures are achingly cold in the stratosphere over the Arctic, which can only mean one thing: it's perfect conditions ...

"I was lucky enough to spend time with some very rare nacreous clouds this morning appearing & evanescing near Swords, north county Dublin," said one person who posted a video of the clouds on ...

Never seen anything like it before !!" So what exactly are nacreous clouds — and will there be any more opportunities to see more before the end of the year? Nacreous clouds are known for ...

Because nacreous clouds can only exist in such frigid conditions, they’re not often seen outside polar regions. But not often isn’t never—and observations of nacreous clouds in southern ...

Skies across England and Scotland looked more colourful than usual this week after onlookers spotted some nacreous clouds. The rare phenomenon, identifiable by an array of shimmery pastel colours, ...

Skies across England and Scotland looked more colourful than usual this week after onlookers spotted some nacreous clouds. The rare phenomenon, identifiable by an array of shimmery pastel colours ...