Since our own Solar System consists of the Sun in the middle with eight smaller planets rotating around it in their orbits, and the element Oxygen has a nucleus and eight smaller electrons rotating around it in their orbits, people have speculated that perhaps atoms are like tiny solar systems. Likewise, perhaps our solar system is an atom in some larger form.

However, atoms are governed by quantum physics, held together by electromagnetism instead of gravity. According to quantum mechanics, tiny objects like electrons do not have precise trajectories. Rather, they must be described by quantum waves of probability. Yet the quantum and classical realms must join smoothly, so somehow the rippling quantum waves must be able to mimic a “classical trajectory” (i.e., same as a solar system).

In the 1920s, the inventors of quantum mechanics dismissed the notion that the system of an atom behaves like a tiny solar system. This was because they observed that while planets orbit the Sun in elliptical orbits, the electrons of an atom seem to hover around the nucleus in diffuse cloud-like waves (known as orbitals), that describe only the probability of finding the electron at different places. But those orbitals can combine to form a clump-like “wave packet” that contains the electrons and does orbit the nucleus like a planet, researchers report in the 2 April PRL. The observation confirms a long-sought connection between the quantum and classical realms. Source: APS Physics https://physics.aps.org/story/v13/st15

Atoms have the same physical properties as planetary systems, which is evident in Bohr’s equation where he equated the electromagnetic force to the centrifugal force.
Source: Turtle Rock Studios https://talk.turtlerockstudios.com/t/the-monster-galaxy-and-atom-hypothesis/54100

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