Researchers have developed a new class of relativistic theories of gravity that solve the problem of gravitational singularities. These theories are based on a generalization of the gravitational potential and recover flat spacetime at large distances. The key lies in the fact that, for the chosen gravitational potential, both the gravitational force and the spacetime curvature vanish at the origin, eliminating the singularity predicted by classical general relativity.

Black hole solutions derived from these new theories exhibit a double horizon structure. Furthermore, a subclass of gravitational potentials has been identified that produces geodesically complete spacetime geometries through the origin, meaning that particle trajectories can pass through the center of the black hole without encountering a singularity. This advance is significant because singularities are points where the known laws of physics cease to be valid.

An important implication of these theories is the prediction of a minimum allowed mass for black holes. This could have observable consequences and offer new avenues for the detection and study of these cosmic objects. The elimination of singularities and the introduction of a minimum mass open new perspectives for understanding gravity in extreme regimes and the search for a consistent quantum theory of gravity.