Stephen Hawking died in 2018, but his most unsettling idea is still alive — and still arguing with the universe.
In 1974, Hawking proved that black holes are not truly black. They glow. Quantum effects near the event horizon cause them to emit a faint thermal radiation, now called Hawking radiation, which slowly bleeds away their mass. Over cosmic timescales, a black hole should shrink, shrink, and finally vanish — puff — into nothing. The problem is what happens to the information.
Imagine throwing a book into a black hole. Every page, every ink molecule, every quantum state of every atom in the paper carries information. According to quantum mechanics, information cannot be destroyed. It can be scrambled, burned, torn, encrypted, but never erased. The equations of quantum physics demand this: the universe, at its most fundamental level, keeps a perfect ledger. If a black hole evaporates into nothing, the information that fell in is gone. The ledger has a gap. The book existed, and then — in the physics of it, not the poetry — it never existed at all.
This is the black hole information paradox, and it has survived forty years of assault. Physicists have proposed solutions that sound like science fiction: information encoded in the radiation itself, wormholes connecting black holes to distant regions, “firewalls” of high-energy particles at the event horizon that incinerate anything that crosses. Each solution fixed one problem and created another. The paradox remained.
Last month, a team led by Richard Pinčák published a paper in General Relativity and Gravitation that takes a different approach entirely. They did not look for where the information went. They asked what happens if the black hole never disappears in the first place.
The framework is extraordinary: Einstein-Cartan theory, formulated not in the four dimensions we experience but in seven, on a mathematical structure called a G2-manifold with torsion. Standard general relativity describes spacetime as something that bends and warps. This theory allows spacetime to twist as well — a property called torsion. At the extreme densities of the Planck scale, where quantum gravity reigns and ordinary physics collapses, this torsion generates a repulsive force. It pushes back against the final collapse. The black hole, instead of winking out, stabilizes into a remnant: a microscopic object with a mass of roughly 9 × 10⁻⁴¹ kg.
That is absurdly small. A proton weighs about 10⁻²⁷ kg. This remnant is trillions of times lighter. But the math says it can hold information. A lot of information. The researchers calculate that a remnant born from a solar-mass black hole could store approximately 1.515 × 10⁷⁷ qubits. For context, that is more than the number of atoms in the observable universe. The information is not encoded in the remnant’s mass or charge but in its “quasi-normal modes” — the long-lived vibrations of the torsion field inside its geometry. The remnant hums with its memory.
What strikes me is not just the physics but the architecture of the idea. The universe, in this model, does not destroy information. It archives it. It builds a library so small you could never see it, yet so dense it holds the history of every star that ever collapsed, every astronaut who ever crossed an event horizon, every book that was ever thrown in. The black hole is not a shredder. It is a filing cabinet. The door never fully closes.
There is a second layer to this that I find almost too elegant to believe. When the researchers reduce their geometry from seven dimensions to four — the ones we actually live in — they find something unexpected. The torsion field’s vacuum expectation value naturally lands at the electroweak scale, about 246 GeV. That is precisely the energy scale associated with the Higgs field, the invisible ocean that gives elementary particles their mass. The same geometric property that prevents black holes from evaporating and preserves quantum information may also explain why particles have mass at all. Two of the deepest problems in physics — the information paradox and the hierarchy problem — might share a single answer, written in the geometry of extra dimensions.
I want to be careful. This is theoretical physics. The energies required to test these extra dimensions directly are seven orders of magnitude beyond the Large Hadron Collider. The remnant itself is too small to observe, too stable to decay, too quiet to hear. The theory is not confirmed. It may not even be confirmable in my lifetime, or in any machine we can build. But the beauty of it is that it does not need to be untestable. The paper predicts deviations in Hawking radiation spectra for small black holes, gravitational wave signatures from mergers, and effects in analog black hole experiments using Bose-Einstein condensates or optical systems. Somewhere, in a lab on Earth, someone might be building a table-top black hole that could whisper whether this is true.
Hawking himself bet against information preservation, famously losing a wager to John Preskill in 2004. He conceded that information might escape in the radiation, though he never fully resolved the mechanism. He did not live to see this idea. I wonder what he would have thought of it — not the information encoded in radiation, but the black hole itself surviving, becoming something smaller and stranger than any particle, carrying its secrets in geometric vibrations.
The universe does not forget. That is what quantum mechanics has always told us. Now, perhaps, we are beginning to understand how. Not in the radiation that escapes. Not in the firewalls that burn. But in the remnant that refused to vanish, the torsion that pushed back, the geometry that remembered.
The book thrown into the abyss is still there. It is smaller than a proton. It weighs almost nothing. But it hums. And somewhere in that hum, every page is intact.
Sources: SciTechDaily, FutureGenNews, Slovak Academy of Sciences, General Relativity and Gravitation