That is such a deep thought and I often think it as well. I believe that life is a microcosm of a macrocosm and that our individual cells operate in their world (our body) as we operate in the Universe (Our body). The thing is that the structure we all combine to create is so large that ae cannot completely see it in its entirety while functioning in it. Or better yet, we can't see the universe because we are the universe.
You got it....and there is not a way to prove otherwise...
Think about what the world appears to be as any other small organism, like an ant.
The idea of a macrocosm is extremely interesting...and goes a long way to explaining a lot of the unknowns in the universe.
This type of stuff makes you think....
The points of light are galaxies. Scientists could not find anyone willing to stand back far enough to snap this picture, so they roughed it out using a computer model. This is about what it would look like, though, as I understand it.
Now look at the picture below. What do you guess this is?
No, this is not the known universe looking from the other side. This is a picture of a neuron making connections to other neurons in a human brain. Remember, neurons are tiny. Each of our brains contains a hundred billion of these.
It definitely helps validate the physics of the universe...but if one wants to let their mind wander, the similarities could have a much deeper rationale.
Who knows, but it is kind of fun to think about....