"well brain, it seems you really need this sleep because that makes no sense whatsoever"

Honestly the visual representation of the atom is just a simplified artist's rendition. It's more acceptable to treat the atom's components as charge fields filled with very high energy contained by nuclear forces. That said, the planets with molten cores and the sun also have their own electromagnetic fields so maybe the concept isn't so far off.

this is the ending to Men in Black (and then they did it again for the ending to Men in Black II because that film was creatively bankrupt).

Yes, because everybody knows the earth is in the sun's p orbital

I've always liked this idea. Like, everything just repeats as infinitum whether you look smaller and smaller or bigger and bigger. The universe is just one of those fractal image kaleidoscopes.

Now imagine if something... or someone... would poke our galaxy with an observation, and all the stars in the arms instantly collapsed into a single particle.

Considering how much shit orbits the sun that would be one wildly unstable atom