AMA | September 2024

5926.075 - 5949.711 Sean Carroll

And then if it's neither of those, I think that the next couple of candidates that you would take seriously are sterile neutrinos, which are neutrinos not like the ones we already have in the standard model, but neutrinos that don't feel the weak interactions at all. That's why they're called sterile. And on the one hand, on the other hand, black holes. Why are these two examples so good?