The universe might be expanding not because of 'dark energy,' but because black holes are turning into brand new mini-universes.
March 24, 2026
Original Paper
Accelerating universes generated by off-diagonal deformations and geometric flows of black holes in Einstein gravity vs $f(R)$ gravity
arXiv · 2603.20244
The Takeaway
Rather than inventing a mysterious new energy source to explain why galaxies are flying apart, this theory uses the math of General Relativity to show that black holes can 'evolve.' Under specific conditions, they can geometrically transform into an entire accelerating universe, potentially explaining the history of our own.
From the abstract
Over the past two decades, numerous modifications of general relativity (GR) and the standard cosmological paradigm have been proposed to describe both the early inflationary epoch and the late - time accelerating expansion of the Universe, while remaining consistent with updated observational data. In this work, we argue that it is possible to effectively stop the machinery of producing new modified gravity theories and exotic cosmological models, and instead remain within an axiomatic, spaceti