Noctilucent clouds, are tenuous cloud-like phenomena that are the "ragged-edge" of a much brighter and pervasive polar cloud layer called polar mesospheric clouds in the upper atmosphere, visible in a deep twilight. They are made of crystals of water ice.
Close up of the beautiful breaking wave formations of a Kelvin-Helmholtz wave cloud, seen along the eastern side of the Rocky Mountains, over the town of Monument, Colorado.
See best pictures Noctilucent Clouds
Better stay indoors and snuggle into some comfort furniture from our Cloud Collection.
VAN GOGH CLOUDS: On Christmas morning, Gene Hart of Jonesport, Maine, woke up to this, also known as Kelvin-Helmholtz clouds.
Noctilucent clouds should actually be called cloud-like phenomena as they are formed at very big altitudes, from 76 to 85 km (even 100 km by some), making them the highest formed phenomena that could be called clouds
islamic-art-and-quotes: “ La Ilaha IllAllah on Clouds “لا إله إلا الله” “ La ilaha illallah None deserves worship but God.