3 ms·
In addition to what andreareina said: Neutrons also interact with light while dark matter is called "dark" for a reason.
by codethief 6y ago
In addition to what andreareina said: Neutrons also interact with light while dark matter is called "dark" for a reason.
- frongpik 6y agoInteract enough to drop a noticeable shadow? Iirc, a neutron is 50e3 times smaller than a hydrogen atom.