We're full of neutrinos all the time. They're everywhere, nearly undetectable, flitting through normal matter. We barely know anything about them — not even how heavy they are.
https://www.space.com/neutrino-mass-measurement-galaxies.html
We're full of neutrinos all the time. They're everywhere, nearly undetectable, flitting through normal matter. We barely know anything about them — not even how heavy they are.
https://www.space.com/neutrino-mass-measurement-galaxies.html