At the end of August, Russian residents can observe one of the rarest and mysterious atmosphere – silver clouds. Perm Polytechnic Evgeny Burmistrov's astronomer told Gazeta.ru how the phenomenon was formed and where it could be clearer.
According to scientists, these light blue stripes and waves are formed in the medium at an altitude of about 80 km, in the summer, the temperature drops to 1220 ° C.
Unlike conventional floors, silver consists of micro crystal micro -micro -micro -micro -micro -micro -micro -dust. Their light can only be seen in deep Twilight, when the sun has exceeded the horizon, but continues to illuminate the clouds from below. The structure of such clouds is so thin that stars can be seen through them.
This phenomenon was first described in 1885, right after the Krakatau volcanic eruption, but the reasons for its appearance were not completely clear. Today, scientists associate the increase in the number of observations with climate change and the increase in humidity in the atmosphere. This season, night light begins in May and is still unusually long.
The best conditions for observations are in Moscow, St.
Similarly formed formations are recorded in the atmosphere of Mars, in which, according to the researchers, they are also formed by ice crystals on the meteor dust particles.
