In the sky over the Novosibirsk there was a silver cloud, and at night they look very nice

In the sky over the Novosibirsk began the season of noctilucent clouds, typical for the summer.

Noctilucent clouds seen in the summer, because at this time practically no night — her place is astronomical twilight. The sun never sets beyond the horizon and illuminates the clouds, so they can be clearly seen.

Astrophotographer Dennis Franczak could make their images June 7 — look how beautiful the sky was that night.