The world is very large.
And yet achievable for today's human being so far away from the hands and imagination.
Sajad,
We are very sure that this is not the case.
Atoms have very specific qualities - and are well-described by quantum mechanics. These rules are qualitatively very different from those that we see around us.
We are contained by gravity not electricity.
Too many other answers are available to list here.
Nucleus of an atom doesn't give off heat, light, and solar wind.
Science fiction explored this topic in comic books, but with sad results that we put far behind us.
Still it is fascinating, that looking into the furthest space yields similar structures as looking into the smallest quantum world. The diameter of a helium atom is about 62x10-12 m , the diameter of the solar system (to Neptune) roughly 4.5x 10+12 m. So we humans are approximately in the middle of the magnitudes.
The structure of the known universe in new pictures looks like a microscopic 3-D tissue view - very fascinating. See here a video of the university of Copenhagen: youtube.com/watch?v=jq_Ib4_QAUU (around minute 4:30).
The filament structures are unbelievably huge: millions of light years.
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