The symmetry of the cosmos is based on the repetition of patterns found throughout nature, from sea shells to spiral galaxies. For example, snail shells, sea shells, vortices, the cochlear nucleus of the inner ear, etc., show similar repeating patterns around an eye. The patterns intrinsic to the shell of a snail are replicated repeatedly in nature and typify the structure of a cyclone and the Milky Way galaxy and every spiral galaxy so far observed.
It looks like some beautiful nebula hanging in space. But this is actually a fluorescence image of the cochlear nucleus, a way-station in the brain for info coming from the ear via auditory nerve fibers (in green). UB research in the Journal of Neuroscience shows that synapses made by these fibers are arranged by plasticity. Image by S. R. Oh, from the Journal of Neuroscience Methods.