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Is the structural similarity between atoms ( smallest) and universe (biggest) a coincidence? Or there can a reason for this beyond imaginations?

It seems like, if one starts travelling out from atoms... and grows bigger and bigger, one ends in a similar structure somewhere in the universe. Kind of a circular ring.

PS: By structural similarity I mean : single nucleus and electrons revolving around in an atom, is structurally similar to planets revolving around the sun.

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    $\begingroup$ What is the structural similarity that you're referring to? $\endgroup$ – Colin McFaul Nov 15 '12 at 15:02
  • $\begingroup$ single Nuclues and electrons revolving around in an Atom, is structurally similar to planets revolving around the sun. $\endgroup$ – Vishwas G Nov 15 '12 at 15:52
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    $\begingroup$ Can there be a reason for this beyond imagination? ... I'm going to steal this line. $\endgroup$ – Nikolaj-K Nov 15 '12 at 15:58
  • $\begingroup$ OP's question(v2) is perhaps indirectly spurred by the same $1/r^2$ dependence in the Coulomb electrostatic force and in the Newton gravitational force, cf. e.g. this and this Phys.SE post. $\endgroup$ – Qmechanic Nov 16 '12 at 16:08
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There is no structural similarity between an atom and the universe.

Atoms are usually described as bound states of a quantum system, while the universe is usually described by general relativity, two very different and currently even incompatible approaches.

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