Using the ideas of Olbers paradox, why is the night black?

If the universe were geneous, isotropic, infinite, and unchanging, then the night sky would be bright because any line of sight would eventually intercept a star. The fact that the night sky is dark is called Olbers's paradox. Its resolution lies in the fact that, regardless of whether or not the universe is infinite, we see only a finite part of it from Earth—the region from which light has had time to reach us since the universe began.