Post #1870138
2026-05-01 17:14 UTC
I have a #physics question and I hope maybe some nerd will be interested in taking up the challenge of explaining something to an (I like to think) intelligent layperson.
A lot of stuff I read about dark matter seems to assume, implicitly or even explicitly, that it comprises particles that not only don't interact with the ones we're pretty sure about, but also don't interact with each other.
Is this just Occam's Razor? 'Cause, I mean, everything we DO know about is *complicated*! …
Replies (1)
-
@stargazersmith@social.linux.pizza 2026-05-02 04:03
@stevegis_ssg@mas.to What I understand is that dark matter would explain a number of observations, including the Einstein rings around galaxy clusters, the reason that galaxy clusters don't move apart given their velocities, and the rotational speeds of stars in clusters. If there are some exotic particles making up dark matter, they interact only through gravity, else they would radiate something. Other ideas seem to not be able to explain all observed effects.