Could our universe be like an atom compared to a much larger universe? Could an atom be a universe compared to a much smaller universe?
Think of it. What if our whole universe - including all the galactic clusters, galaxies, stars, planets, moons and everything else in it was just a tiny little atom in comparison with a much larger Macro-universe.
On the other hand, imagine that the tiniest little atom was an entire mini-universe with its own variants of galactic clusters, galaxies, stars, planets, moons but happening at a microscopic scale that is so small that it is not observable to us.
Are these just fantasies? Or is there a possibility that all these things were possible, that existence could be layered into several layers of small within large universes on an unending scale both ways.
There is an episode of Cosmos, where the legendary astrophysicist Dr. Carl Sagan asks a similar question.
What if?
