Normally I skip articles by Wolfram because all he does is spout about how good Mathematica is.  But filter out the free advertising for Mathematica and you have a pretty decent article that starts out discussing gravitational waves and continues on to some interesting coverage on some neat results about gravity.  I&#x27;m not sure we&#x27;ll be creating a stable lattice of bodies all orbiting each other any time soon, but it was fun to read about.  If you are moderately talented at math&#x2F;physics you can probably understand most of this article.  No PhD required, and the animations are fairly informative.