The hard upper limit on a neutron star mass, the Rhoades-Ruffini limit, is at 3.2 solar masses.
This discovery is significant, because we never found a collapsed object in the 2-3 solar masses range, but it definitely doesn't need new physics to be explained.
This discovery is significant, because we never found a collapsed object in the 2-3 solar masses range, but it definitely doesn't need new physics to be explained.