I thought the only observation we have of dark matter is via cosmological models.
1 point
It’s an interesting idea, but it assumes that physical forces are getting WEAKER over time, and that’s a pretty big assumption. It’s not very parsimonious.
I’m not a subscriber to this particular theory, but I do think model error is a more plausible explanation than magical, undetectable mass.
2 points
The mass is definitely detectable–it’s just not visible. And it’s detectable in several different ways that all match, that’s the key here. This is definitely an observation.
