Black Holes: Gateways to White Holes, Reimagining Time

University of Sheffield researchers propose black holes may transition into white holes, ejecting matter and potentially time back into the universe. Published in *Physical Review Letters* on March 11, the study challenges the conventional view of black holes as cosmic dead ends. Instead, singularities might represent new beginnings. The research uses quantum mechanics to theorize that a black hole's singularity could transition into a white hole, reversing the flow of matter and energy. This model employs a simplified planar black hole, suggesting similar dynamics in standard spherical black holes. Time, traditionally linear, is proposed to be measured by dark energy, the force behind the universe's expansion. This perspective could unify gravity and quantum mechanics. Dr. Steffen Gielen suggests an observer could theoretically pass through a black hole, emerge from a white hole, and experience time differently. This concept challenges existing physics and could resolve paradoxes like the information paradox. The findings invite further research into dark energy, time, and black holes, potentially redefining our understanding of the cosmos.