David Brin on Nostr: Attempts to figure out dark matter have pinned hopes on the possibility that the ...

Attempts to figure out dark matter have pinned hopes on the possibility that the dark… bits… whatever they might be… interact with regular matter in some way – even very slightly – beyond just gravity.
https://www.sciencealert.com/dark-matter-may-interact-with-regular-matter-beyond-gravity-study-finds