Cosmic rays are streams of particles moving towards the Earth from space. Their composition. 90% are protons, 7% are alpha particles, 1% are electrons and more than 1% are nuclei of heavy elements. There is one such particle in the space around the Earth in 1 cm3. Among the corpuscles of cosmic rays, there are particles with tremendous energy – up to 10 GeV. Cosmic rays are formed on the Sun and other stars, during supernova explosions, and 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.