Current theories about Universe dimensions and age put them - respectively - at about 90 G light-years wide and 13.8 G years old. To avoid implying that matter travelled faster than light, theories state that - sometime after 'time 0' - space wildy expanded "by itself", so that matter ended up enormously scattered in spite of having moved very little in comparison.
This - possibly as many other concepts in modern physics which work perfectly but remain un-imaginable - SEEMS to me to imply that:
1) No matter how big the Universe is, and what tools we will have available, it will never be possible to "see" anything coming from farther than 13.8 G light years (nothing travels faster than light); if this happened, the age of the Universe would be updated;
2) Looking very far away in one particular direction, we might be actually looking at ... ourselves, i.e. to the matter now composing our galaxy when it was still there, before being "shooted" where it is now by the expansion of space, and be reached by its own light !
3) The expansion of space creates/created enormous "gaps" amongst matter, where absolutely nothing is/was present, until waves of all sorts (gravitational & electromagnetic) reach and start moving through it;
4) The fact that we are now receiving light 13.5 G years old from far-away galaxies scattered in every direction, means that we now are at least 13.5 light years from the current "borders" of the universe. Provided - of course - that a "centrifugal" expansion of the Universe still makes any sense, with theories which no longer have anything in common with ... common sense.
Most of them seem very odd conclusions. Am I wrong on all the line ?