@I am Legend,
Well their are many theories. Here is one...like with "Rick and Morty" or "Men In Black", or "The Cell" maybe we are part of another being entirely, just a spec of something else
We ask "Why is space black?" Well when you are inside of a closet with no lights on ( a type of outdated punishment ), all you see is blackness. Your in a room with no windows ( often the bathroom ) with no lights on. Black. It is not that nothing is there but the truth is that we
must be inside something. Correct. I could prove this if NASA would allow me to, but again maybe the technology is not a reality yet.