4-Body Problem?

The last three years I've been involved in educating myself on the history of science and physics which has been truly fascinating.

It wasn't until I saw the very good Netflix series 3 Body Problem, based on a series of books by author Liu Cixin, that I first heard of such a thing.

Now astronomers have identified a four body system.

GIZMODO:

Astronomers have identified a rare, tightly bound star system in which an eclipsing binary—two stars that pass in front...