Appreciate both this and sigmoid's comment above. I don't really understand cosmic background radiation enough to understand though. I get it at an absolutely s

Appreciate both this and sigmoid's comment above. I don't really understand cosmic background radiation enough to understand though. I get it at an absolutely superficial level and understand that it's used as evidence of the big bang, but that's about it. Which is why I fall back to lensing as sort of the only argument for DM which I really understand.