Physicists Just Accidentally Made a New Discovery About Black Holes - ScienceAlert

While running equations for quantum gravity corrections for the entropy of a black hole, a pair of physicists found that black holes exert pressure on the space around them.

"It is hoped that when quantum field theory is incorporated into general relativity, we might be able to find a new description of black holes.".

"The pin-drop moment when we realised that the mystery result in our equations was telling us that the black hole we were studying had a pressure – after months of grappling with it – was exhilarating," Kuipers said.

"Our work is a step in this direction," Calmet said, "and although the pressure exerted by the black hole that we were studying is tiny, the fact that it is present opens up multiple new possibilities, spanning the study of astrophysics, particle physics and quantum physics."