What do you think about this idea/theory I have

I have noticed similarities between our universe and atoms/molecules since I first began learning about atoms, etc. I have always kind of wondered if we and our "universe" were just part of some large atom or molecule making up some other larger world. It just seems like such a cool thing to be so insignificant and for there to be so much else out there, most of which we are either too small or too large to explore. Perhaps there is some massively larger version of you and you are just a speck on a speck of a skin cell and you could have some miniature version of yourself living on a speck of a speck as well. Has anyone else ever thought about this or am I making any ridiculous assumptions here? Just thinking about it and I thought I'd throw it out and see if anyone else found it as interesting as I do.

It's not as ridiculous as you think. The reason the study of the atom and the particles that make up the atom... and the particles that make up the particles that make up the atom is so fascinating, is that their behavior is what makes them what they are and their behavior seems to be definable. You can observe and define the behavior of atoms, they react in a predictable way to stimuli. This is what drives scientists to try and find a unifying theory that explains everything in the universe.

If we know there are subatomic and atomic particles, and the only thing that makes them different is their elemental configuration and behavioral patterns, then it is simply a matter of perspective to think, that from a view beyond the borders of our own comprehension, larger than larger than large, our universe could be sub-atomic, and could be reacting to stimuli, and could be decaying in the same way the cell of a body decays, or the same way the elements all have atomic half lives, and will eventually break down, or become less stable. It's also true that time moves differently at different speeds. So for us, 65 billion years, could be a second... or less, from the perspective of whatever large "being" of which our universe is a part. It now becomes a question of your mind facing a mirror against a mirror. (you ever do that?) the never, ending exponential possibility that, whatever huge thing of which our universe is a fraction, is itself a fraction of a much larger thing... it is a tiny particle in an even greater thing, immeasurable by any standard it could ever produce and not observable, but possible. And from our perspective, atoms and tinier particles could be mini universes, with sub-subatomic parts, which make up a tiny universe, with little itty bitty people (intelligent life) discussing this exact same concept.