Merging black holes and neutron stars have unusual oval orbits prior to colliding and merging, which challenge the laws of physics.

Black hole and neutron star mergers push the laws of physics with their odd orbits

Source: space
Source Link: https://www.space.com/astronomy/black-holes/black-hole-and-neutron-star-mergers-push-the-laws-of-physics-with-their-odd-orbits