Both of those are pressureless, so they could be dark matter but not dark energy...

		snarkconjecture on April 5, 2024 \| parent \| context \| favorite \| on: Scientists may have discovered a flaw in their und... Both of those are pressureless, so they could be dark matter but not dark energy. Except that primordial black holes are ruled out (as 100% of dark matter) by various observational bounds, and antimatter would be just as visible as normal matter and not "dark" at all.