"I'm going to leave the scientific babble off the table on here because I am sure not that it may be as riveting to others as I find that stuff interesting. But as a parting shot, which is always the fun part before leaving a debate in the state of suspense, I will have to say that the notion of an expanding Universe is no longer a belief as it is an observable fact."
No sense in arguing with someone who cannot be proved right or wrong. Hubble's conclusion about an expanding universe is, of course, accepted almost universally - by mankind, perhaps - but doubtful that all alien life takes it as gospel. The message here is that the beat of a fly's wings is observable, but are they really beating that fast when you slow them down to observe them? Then my next question would revolve around the word "fact". You will lose, LOL, just accept it.