There are two possibilities: Either the universe has an end and a certain size or the universe has no end and extends forever. Both possibilities are mind-boggling.
If the universe has an end, we need to know how wide it is, measure its size, or know where its limits are.
But if the universe has no end, all previous beliefs and ideas are wrong. The space or universe extends and extends forever in all directions.
As for the painting is wonderful and expressive