In 1963, Roy Kerr, a New Zealand-based mathematician proposed a set of equations that explain the properties of rotating black holes as per Einstein’s theory of general relativity.

These equations are collectively called the Kerr solution, and to this date, they represent one of the most accurate descriptions of rotating black holes.

However, a new study reveals that black holes are filled with instabilities, and what Kerr proposed is possibly not 100 percent accurate, especially about the internal structure of black holes.