Cosmic rays are streams of particles moving towards the Earth from space. Their composition: 90% – protons, 7% – a-particles,. 1% – electrons and more than one percent – nuclei of heavy elements. There is one such particle in space near the Earth in one cubic centimeter. Among the corpuscles of cosmic rays, there are particles with enormous energy – up to 10 GeV. Cosmic rays are formed on the Sun and other stars, during supernova explosions, as well as in the center of the Galaxy.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.