An atom only appears in a particular place when witnessed by a conscious observer. Without this witness, nothing specific or tangible ever happens. There is only a constant super-positioned whir of possibilities. No object exists outside of a relationship with a conscious observer. There is nothing to be seen without a watcher.
When any number of sub-atomic particles become physically joined together, an energetic bond is created; a connective relationship that continues unbroken forever. remains permanently bound forevermore. Even when separated by hundreds, thousands, millions of miles, this energetic bond connection remains intact so that if you do something to one, you affect the other in the same way, no matter how far apart they are.
When our universe was born, it exploded out of one, tiny particle approximately the size of a pea, from which came all of the bits of matter that make up the universe. What this tells us is that we are connected to the entire universe, and to each other. Human individuality does not, cannot exist. It is a delusion within our thinking, fabricated by our brain. The only thing that could ever be identified as individual is the entirety of all matter in one, the Universe as a whole. We are comprised of this matter. The original joining relationship bonded us all together forever the instant when that tiny little pea-sized particle exploded with the Big Bang.
This is the best we can do with the information our limited sense receptors are able to perceive and that our little human mind is able to comprehend. We simply don’t know what we can’t know.