If I may put my two cents.
The Big Bang Theory, which says that the Universe started as a very small volume, even a singularity of zero volume, means that this small area, this center of the explosion, comprised everything there is. The Universe itself expanded and so, the Big Bang happened literally everywhere. So, background radiation from the Big Bang comes from everywhere.
Furthermore: Einstein, Cartan, Minkowsky, Poincare and others, based on the fact that light has a constant, finite speed, literally adapted a new geometry for space and time. This means that you cannot regard the Universe in the terms you would regard a city square. There, something happens and you see it almost instantly, the distance being small enough and light being fast.
In the Universe, only those events that are causally connected to you are visible. This means that you are not looking at some kind of "simultaneous" events sphere.
Superman might move faster than the debris, and be able to look at debris close and far. But we are just part of a piece of debris, and are always blindfolded. We can only sense the noise they make, and this noise does not travel faster than the shock wave we ride. In this sense farther noises will be earlier noises.