In addition to what andreareina said: Neutrons also interact with light while da... | Hacker News

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		codethief on Dec 21, 2020 \| parent \| context \| favorite \| on: Evidence of “modified gravity” in 150 galaxies bol... In addition to what andreareina said: Neutrons also interact with light while dark matter is called "dark" for a reason.

frongpik on Dec 22, 2020 [–]

Interact enough to drop a noticeable shadow? Iirc, a neutron is 50e3 times smaller than a hydrogen atom.

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