Three Body Problem

The Three Body Problem is a four hundred year old problem of mathematics which has its roots in the attempts to simulate a heliocentric Sun-Earth-Moon system.

From an article titled The Physics Problem that Isaac Newton Couldn't Solve by cosmologist Robert Scherrer we read:

Issac Newton
Issac Newton is an authority who is credited to have "brought the laws of physics to the solar system."1 In regards to the multi-body problems of his system, Newton famously invoked divine intervention as his solution:

1The University of California San Diego credits Newton as providing the laws of physics for the Solar System:

Henri Poincaré
http://n.ethz.ch/~stiegerc/HS09/Mechanik/Unterlagen/Lecture13.pdf

Ask A Mathematician
https://www.askamathematician.com/2011/10/q-what-is-the-three-body-problem/

A Thousand New Solutions
From a New Scientist article titled Infamous three-body problem has over a thousand new solutions:

Unequal Masses
Over a thousand new periodic orbits of a planar three-body system with unequal masses