From the perspective of the rest frame of the universe, the motions of the very large and the motions of the very small can be characterized or described as seeking a "center" by virtue of evolving helical motion and abstractional waveform constructs.
Atoms and elements smaller than atoms are described as quanta and thus have statistical definition by quantum mechanics. Due to the atom being a primary constituent of all large scale matter, the fuzziness involved in such description (contained within each atom) is carried along as "sub parts" of the atom which itself is moving in evolving helices of elliptical/circular motion relative to the rest frame of the universe.
Additionally, the Schrodinger wave equation is central to quantum mechanics and used to interpret the behavior of elementary particles as they evolve in time:
As the name of the equation implies, the analytical gist in any interpretation is a graphed waveform. For example:
Graphical waves oscillate about an axis or in reference to a "center"...
Watch this video for an excellent, but brief encapsulation of the quantum world:
To experience the very small aspects of our known universe review the video below:
Read the following article for background on the large scale universe:
Now view a fly-through of all known scales of direct or indirect experience:
Summary:
On a grand scale then, all matter elements of the observable universe can be said to be constantly in search of a finer and finer "center" metaphorically, physically, and in description.