Check out this whizzy interactive scale of the universe thing.
Speaking of whizzy physics stuff, I also came across these ten purported answers to the question 'Why is there something rather than nothing?' What bollocks. Apart from number 2 (and maybe, if we're feeling generous, 1), they are no such thing. They explain how – not why – there is apparently something rather than nothing.
Now, of course, in reality neither I nor the world exist. But we indisputably appear to do so. Why is this? Logically, nothing should.
Maybe it's cos we can appear to exist. The apparent universe we inhabit is the expression of the possibility that it can appear to exist.
If you know what I mean.