Space and matter are not the same things. They are independent.
I can't argue with you how you choose to define matter, but are you questioning the folks at CERN who tell us that invisible dark matter makes up most of the universe that we can only detect it from its gravitational effects? source:
https://home.cern/science/physics/dark-matter
If I recall correctly, didn't these folks a few years back claimed that mass could travel faster that the speed of light;
"...they had recorded subatomic particles travelling faster than light, the world went into a frenzy. An experimental result that broke one of the most fundamental laws of physics..."
Of course it was amazing how many members of the scientific community jumped on board with the announcement but as it was claimed:
" The team tried and tested every permutation of software, hardware, and theory that they could think of, and through every step, every bug they fixed, every increment of understanding they earned, the evidence for faster than light neutrinos stood as solid as the mountain above the experiment."
But how many of them read the Bible, if they had then they would have heard what wasn't seen as written in
John 16:16-19. I think they figured it out
@00:22 they would seen what was heard.
Well, they had to come up with something to tell everyone.....
But as far as the dark matter, I hear if you go look up at midday described by Paul as being 6 hours after the beginning of evening and the morning of the day, you can look up and see all that dark matter they are talking about, but that is only when gravity has pulled the moon into the earth's atmosphere along with the sun, that way the great light which rules the night doesn't block the invisible dark matter from being seen.