One reason I don't really like these discussions is that they get over the heads of almost all of us pretty quickly (eta being a probably exception).
My guess (and I want to emphasize GUESS) is that space proves to be the tensors in Einstein's GR equations. ( I did try to read an advanced text on GR once but got lost less than a quarter of the way through). I think your definition of it being "everything" is too broad and not useful.
Space-time is the backdrop upon which energy-matter does it's thing. I can't even hope to do much better than that.
It may prove to be the 4D part of the full 11 dimensions that the "real" universe operates in but it's so wild, so speculative and so laden with difficult math that I think we have to leave it untill we have someone who can explain it available.
Once again, at the edges, "I don't know" is a necessary answer sometimes. What I, personally, don't know is if
anyone knows the answers in this area. Or if they do would we understand the answer anyway
.
This message has been edited by NosyNed, 06-23-2004 10:11 PM