The astrophysical origin of over 90 compact binary mergers discovered by the LIGO and Virgo gravitational wave observatories is an open question. While the unusual mass and spin of some of the discovered objects constrain progenitor scenarios. the observed mergers are consistent with multiple interpretations. A promising approach to solve this question is to consider the observed dist... https://www.markbroyard.com/flash-grab-hobbit-door-on-sale-limited-grab/