I'd say this is more of an interesting take on page transitions. I was expecting mouse wheel scroll to zoom, so I instinctively scrolled expecting some kind of zooming effect.

I remembered there was a website featured here on HN that had an interactive tour of the scale of the universe ranging from the very microscopic world (if I remember correctly I think it even went down to Planck length) all the way to the macroscopic (black holes, galaxies). I'd be interested in such a zooming library that achieves something like that.