nacreous

Nacreous cloud form in very cold conditions over polar regions and within the stratosphere, about 12 to 19 miles high, far above normal clouds.

Looking like a "portal to the next dimension" or possibly a spaceship, the shimmering colours of nacreous cloud were spotted.

Nacreous clouds are mostly seen a couple of hours either side of sunset or sunrise and, being so high, they are still lit by sunlight which makes them appear even brighter in our evening sky.

One BBC Weather Watcher said "absolutely fantastic Nacreous cloud caught at tonight's sunset with some gulls flying over. What a fantastic sight to behold".

Nacreous cloud forms in very cold conditions over polar regions and within the stratosphere, around 12 to 19 miles high.