What are cosmic rays and what is the source of cosmic rays in the Galaxy according to modern concepts?

Cosmic rays are elementary particles and nuclei moving at near-light speeds. The main sources of cosmic rays in the Galaxy are supernova remnants and neutron stars.

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.