He says, “”85% of the gravity in the universe has no known origin. So we call it Dark Matter. But we don’t know what it is. We don’t even know if it’s matter. We measure that. We didn’t pull that out of our ass! We measure this force in the universe and we gave it a name. It’s possible to talk about something even if you don’t know what’s causing it. Then there’s a mysterious pressure in the vacuum of space that is forcing an acceleration of the universe opposite the wishes of gravity. That’s what we call Dark Energy. We can measure that.””
https://youtube.com/shorts/Fww89svX2XY?si=dtIoEj4MNXRuvmb-