fermionic dark matter

Some models of dark matter are wispy and diffuse, but one candidate allows for dense clumps – fermionic dark matter, particles that obey quantum rules that prevent them from being infinitely squished, similar to the way electrons and neutrons refuse to be mooshed together below a certain density limit.

Something Far Darker Than a Black Hole Could Hide in The Heart of The Milky Way Michelle Starr 2026