Response to @rickeychabine: "Because of the infinity of stars in every direction and light had enough time to rech us in from everywhere"
"This is known as Olbers' Paradox, named after German astronomy Heinrich Olbers, who described the problem in 1823. The fact that the night sky is not fully illuminated is one of the ways that we know that this version of the universe that we are experiencing in its current form is not static or infinitely old, but that it did have an origination point commonly held to be the Big Bang. The Paradox is resolved by the Big Bounce model, which proposes that that singularity was the result of the collapse of a previous version of the universe, and that this current version will itself collapse back into a singularity, which will then eventually expand again into the next version of the universe. Given that it was expressed as early as 1610 by Johannes Kepler, Olbers' Paradox is itself an example of Stigler's Law of Eponymy, which states that scientific ideas are never named after the people who originally conceive or discover them."