What are the strengths and weaknesses of the redshift theory?

Answer 1

cons

quasars have have large red shift that suggest they are far away as distant galexies some quazars with very high redshifts appear to be interacting with other galexies that have lesser redshift which would suggest that quazars have ann in trensic redshift

pros

its perfect evidence to show that the universe is expanding

Answer 2

The strength of the redshift theory is that it provides strong evidence for the expansion of the universe and supports the Big Bang theory. However, a weakness is that redshift measurements can be influenced by other factors such as gravitational effects, which can complicate the interpretation of the data.