29/06/2025
After 12 years they make their appearance again in the sky !!! Noctilucent clouds.
Noctilucent clouds are thin, wispy clouds that glow with a blue or silvery hue at night when illuminated by sunlight from below the horizon.
They are the highest clouds in our atmosphere, forming in the layer known as the mesosphere around 80 kilometres (50 miles) above the Earth's surface.
Noctilucent clouds only appear during the summer months, and only at latitudes between about 45 and 80 degrees north or south of the equator