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Rains come from outer space

15.08.2003

According to researchers from the Institute of Nuclear Physics in Heidelberg (Germany), elementary particles of cosmic rays are involved in the formation of clouds.

Clouds, as you know, consist of water droplets (at low temperatures - from ice crystals). In order for droplets to condense from water vapor, crystallization centers are needed. They are small dust particles, crystals of sea salt, particles of soot and smoke, and at high altitudes (about 50 kilometers), water can condense around relatively large clusters of ions.

These groups of ions, about 30 nanometers in size, as shown by German physicists, arise from gaseous sulfur oxides under the action of the ionizing energy of cosmic rays. Sulfur dioxide enters the atmosphere from volcanoes, from forest fires and, of course, from fuel burned by humans. Water molecules are attracted to accumulations of ions, resulting in a microdroplet of sulfuric acid, which, as you know, is highly hygroscopic (earlier, in the winter, a glass of sulfuric acid was placed between window frames so that the glass would not be covered with ice).

The acid attracts new water molecules, forming a drop. Many drops form a cloud, rain falls from the cloud. So the physical processes in the Galaxy affect our weather.

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