Recent content by Pete72

Fabulous. Thanks very much for your helpful explanation. Pete.

Thanks Chalnoth, that's really helpful. A bit of a follow up though. If I had a (really long) ruler I could measure the observable universe as being 46 bn light years wide. As I understand it, and also from your response, we are measuring matter from the CMB here. I could understand if the...

Hi all, I've just been having an interesting pub conversation with (what I would call) an amateur cosmologist and I posed the following question "the observable universe is stated as being c 50 billion light years wide but (even putting aside issues such as expansion / contraction) if nothing...