Thanks Andre, I’m wondering if you are referring to the multiverse, or perhaps eternal inflation with an infinite bubble universes. If so, would you agree that that is far from established science and represents a likely unprovable conjecture that must be taken on faith?

Carl Sagan referred to the cosmos as “everything there is” or something like that. I and others do use cosmos and universe interchangeably but I think it is clear from the context that they are referring to the same thing.