Question, do scientists see back to the same point in ALL directions? Does the universe seem to show light 13.5 billion years old in all directions?
Yes. “Old light” is visible in all directions. The “microwave background radiation” indicative of that extreme age is roughly uniform whichever way you look; insofar as there are variations, they are consistent with expansion of gas from a very small space very long ago - to wit, all “seeing back to the same point”. It’s rather mind-bending to contemplate the time & distances involved, and to consider that what is seen very far away in every direction is entirely consistent with it all being closely packed together at one time ... but, when thoroughly contemplated, it does make sense.
And this indicates the problem I (and others) have with the “young earth” crowd: they seem grossly ignorant of the simple observable facts of reality. Universal microwave background radiation exists, and is consistent with having originated from a compact high-energy source. Fossils exist, types separated by strata consistent with biological change, geologic pressures & accumulation & erosion. Self-replicating complexity arises from very simple chemical processes. It’s not a matter of faith/belief, it’s a matter of just looking at what _is_; shouting “God made it!” is inadequate retort to “this is, why?”, especially when the “young Earth” position fails to address why God would, a mere 10,000 years ago, create (among other things) light which, by all sensible observation & consideration, appear to be 13.5 billion years old and (regardless of direction) originating from the same compact source. I reject the notion that God created many things in a “young” universe to look “old” to test our faith.