In the realm of astrodynamics the so-called Three-Body Problem is one of the oldest challenges in celestial mechanics. It focuses on trying to explain the motion of three celestial bodies interacting with each other through gravity.
The orbital dilemma is also the name of the cult 2008 science-fiction novel by the Chinese author Liu Cixin, the first in a series that portrays a fictional past, present and future during which Earth encounters an alien civilisation from a star system with three Sun-like stars orbiting one another.
