When three massive objects meet in space, they influence each other through gravity in ways that evolve unpredictably. In a word: Chaos. That is the conventional understanding. Now, a researcher from the University of Copenhagen has discovered that such encounters often avoid chaos and instead follow regular patterns, where one of the objects is quickly expelled from the system. This new insight may prove vital for our understanding of gravitational waves and many other aspects of the universe.
Thanks yes I might look at the paper. Having a mixture of stable and chaotic regions is a well known phenomenon though. See for example Wada basins.
My dad used a Wada basin to shave in the morning when he was in Vietnam.