A Met Office video explains seven rare cloud types - including noctilucent clouds as they’re sighted in the UK.

They Are Earth’s Highest Clouds Noctilucent clouds are Earth's highest clouds. They form between Earth and space, about 47–53 miles (76 to 85 kilometers) above the ground in the mesosphere.

Rare clouds that form in summer high up in the Earth's atmosphere have been seen from parts of Scotland.BBC Weather Watchers ...

The ice-blue clouds form 50 miles above the ground in a layer of our atmosphere known as the mesosphere. Resembling ripple-like reflections of water in the high-altitude sky, noctilucent clouds ...

Noctilucent clouds form in the mesosphere, or the third layer, at an altitude of about 45 to 55 miles. Since they’re so high up, they catch sunlight long before local sunrise and after sunset ...

Striking displays of clouds which are mostly only seen in the summer months have been appearing in the skies over Northern ...

Noctilucent clouds literally take it to a different level. These clouds form in the third layer of the atmosphere, known as the mesosphere.

Noctilucent, or night-shining clouds, are rare clouds that can be spotted shortly after sunset in higher latitudes. Summer is the best time to look for them.

Aurora chaser and photographer Harlan Thomas ( @TheAuroraGuy) was about 18.5 miles (30 kilometers) north of Calgary along a rural stretch he calls "The Twisted Pond Road" when the surprise display of ...

Photographers hoping to capture stunning "night-shining" clouds have been left frustrated this year. The fast-approaching solar maximum may be to blame.

These are noctilucent or “night-shining” clouds made up of tiny grains of ice, about the size of a flu virus (100 nanometers). They are formed in the upper reaches of the mesosphere.

A fantastic photograph shows noctilucent clouds over Edinburgh.Sachiko Hamada caught the stunning space phenomenon at 2:10am ...