Is the evolution of matter in the Universe reversible?

The evolution of matter in the Universe is irreversible. Proof of this is the existence of stars in which an irreversible process of conversion of hydrogen into heavier elements occurs.

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.