In astronomy, redshift is the phenomenon in which light from an object appears to be shifted towards longer wavelengths, making it appear more red. This occurs as an object moves away from the observer. Redshift is an important term in cosmology and observational astronomy.
Astronomers can learn about the universe’s expansion history by examining the distribution of redshifts across various objects in the universe. This contributes to a better understanding of cosmic evolution and the universe’s fate.