Quantum Gravity May Erase Black Hole Singularities

Theoretical physicists in the U.K. and Spain have proposed a solution to the black hole singularity paradox by modifying Einstein's theory of general relativity. Published in February in Physics Letters B, the study suggests that instead of an infinitely dense point, a black hole's core could be a highly curved but regular region of space-time. This modification incorporates quantum gravity, unifying general relativity with quantum mechanics. While directly confirming the absence of singularities is challenging, researchers suggest searching for signatures in gravitational waves from black hole collisions or primordial gravitational waves from the early universe. Further research will explore singularity-free black hole formation and address other types of singularities, such as those associated with the Big Bang. This approach may lead to models of bouncing cosmologies, replacing the Big Bang with continuous expansive and contracting phases.