Isilder, we can show dark matter’s properties. It has a pressure equal in magnitude to its energy density, but opposite in sign. Unfortunately, that’s about all we can say about it. Yes, it’s a problem that we can say so little about something that’s apparently so abundant. Got any better suggestions?
Thanks all, for your well thought out and intelligent responses!
Keep 'em coming!
That reads like a 2-for-1 poop joke.