nostr:npub1a73wyr3s8ffagwsnlfd548d0nsaqcwdnn6550akehaxglw3kzc8qce7y6q that's not true, it's not about matter antimatter at all. It's all about torsion field mathematics and the frame dragging of fast moving heavy metals twisting spacetime in a fashion that reduces the gravitic effect somewhat. There are patents describing this produced with spinning mercury suspended in a magnetic torus.

That science paper only says that there is no anti-gravity in antimatter so we can't blame repulsion for the lack of antimatter in the universe.