High-redshift Galaxies

High-redshift galaxies are distant galaxies observed in the early universe, generally at redshifts greater than 2 (meaning they are more than 10 billion years old). The term "redshift" refers to the stretching of light from these galaxies as the universe expands, causing it to shift toward longer wavelengths. Studying these galaxies provides insight into the formation and evolution of the universe, stellar processes, and the growth of cosmic structures. Their light takes billions of years to reach us, allowing astronomers to glimpse the universe's past and understand how galaxies have changed over time.