>>12996401It could still expand into itself. you need to understand it only takes place on large scales. So the distance between the furthest galaxies no matter the direction is always expanding. and those galaxies would be observing the same exact thing.
say you have a finite set of numbers. we can have all of the even numbers between 1 and a thousand. a set of about 500 numbers.
now lets add odd numbers, now we have 1000 numbers.
We can go further still. lets add all tenths, so now we have 10000 different numbers. We can do this as much as we want adding more and more numbers but we still only have a finite set.
Galaxies getting further apart is like adding more numbers to a set. but in this case the measure is amount of space.
