There is a solid wall of nothingness at the edge of the universe. It took years after inventing numbers for man to invent zero. So absolute nothingness is literally impossible to imagine. It is like trying to imagine a 4th direction in space except there are no directions at all. It is not empty space filled with nothing, it is nothing absolute.
BobFX t1_ja56f7j wrote
Reply to Eli5 Help, please my brain hurts. If there is an expanding ring of light from the big bang, what is outside it? by ExtremeQuality1682
There is a solid wall of nothingness at the edge of the universe. It took years after inventing numbers for man to invent zero. So absolute nothingness is literally impossible to imagine. It is like trying to imagine a 4th direction in space except there are no directions at all. It is not empty space filled with nothing, it is nothing absolute.