Provide proof that the universe is expanding.

Light from distant galaxies is shifting towards the red end of the spectrum – a phenomenon called redshift. The farther away the galaxies, the greater their redshift. The most distant galaxies that we can observe have the greatest redshift, which indicates the expansion of the space in which the observed galaxies are located.

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.