3 ms·
they are obvious. The evidence against it is that there are not that many of them (or we would have detected more), and while we aren't sure how much they all
by hwillis 6y ago
they are obvious. The evidence against it is that there are not that many of them (or we would have detected more), and while we aren't sure how much they all weigh we're pretty sure it's orders of magnitude less than what would be required for dark matter.
- Trasmatta 6y agoI believe I heard on a podcast that there's a theory that dark matter might actually be multiple things, and that neutrinos could just account for a small percentage of that. Is that correct?
- exmadscientist 6y agoThat's correct. In the standard ΛCDM cosmology, neutrinos would provide about 0.5% of the required matter. See the Particle Data Group's dark matter review: http://pdg.lbl.gov/2020/reviews/rpp2020-rev-dark-matter.pdf http://pdg.lbl.gov/2020/reviews/rpp2020-rev-dark-matter.pdf