Hey great article I actually struggle with this notion sometimes cause there are a lot of scientific and metaphysical question that come into play with the idea of over 90% of matter in the universe really being empty space between electrons and atoms. I was wondering though cause i'm actually not sure, you say at the beginning "Matter is formed by particular structures in the geometry of space-time " but is this really true or just meant to be a simpler explanation? I thought all of the matter that has always existed was in the singularity at the beginning of the big bang, it simply expanded out and formed different structures that have different effect on space-time?