Physics
Mediterranean Neutrino Telescope Finds No Crack in Einstein's Relativity
KM3NeT/ORCA, running at a fraction of its planned size, analyzed 5,828 neutrinos and set the first direct limits on certain muon-tau effects.
Topic
Quantum gravity
21 stories from Planck Standard. Latest: November 8, 2026.
PhysicsThree Quantum-Inspired Black Hole Cores Would Ring at Different Pitches, Math Shows
Khalifa University researchers computed how Planck stars, Bonanno-Reuter and Hayward black holes would sound compared with Einstein's, though today's detectors cannot hear the difference.
PhysicsPhysicists Derive Einstein's Gravity Equations From Quantum Information Theory, Without Analogies
A Physical Review Letters paper shows that a measure of how distinguishable quantum states are, evaluated at a horizon, yields the semiclassical Einstein equations.
PhysicsElectron Spins Alone Push a Centimeter-Wide Levitating Diamond, a First, Okinawa Physicists Report
The OIST experiment is the first time a quantum effect has directly moved an object massive enough to feel gravity, with an eye on testing whether gravity is quantum.
PhysicsPhysicists Use a Topology Theorem to Show a Passing Disturbance Leaves a Mark on Hawking Radiation
A new calculation says that once a black hole's horizon is temporarily distorted in one direction, its radiation cannot return to its original behavior with zero trace.
PhysicsPhysicists Sifted Three Years of LHC Collisions for the Spherical Spray a Microscopic Black Hole Would Leave When It Evaporates
The UC Santa Barbara team used a new 'phase-space distance' method with a supervised machine-learning classifier for the first time in a particle search and showed it beats the standard sphericity test. 'It's not a dead end,' said graduate student Danyi Zhang. 'If this thing existed with these properties, we'd have seen it.'
PhysicsA Coffee-Mug-Sized Germanium Crystal Under 1.4 Kilometers of Italian Rock Listened for 62 Days for the Radiation a 1960s Theory Says Gravity Should Emit While It Kills Schrödinger's Cat
The Károlyházy model held that tiny ripples in spacetime erode quantum superpositions and explain why big objects behave classically. The VIP collaboration at Gran Sasso says the predicted signal isn't there, and the null result narrows where quantum gravity can hide.
PhysicsA 300 TeV Photon Crossed 2 Billion Light-Years It Should Not Have Survived
The model combines axion-like particles with a violation of Lorentz invariance — and it predicts the photon arrived an hour late, which is what detectors saw.
PhysicsTwo Rubidium Isotopes Fell Side by Side for 280 Days in Orbit. They Never Drifted Apart
A team aboard the China Space Station ran the first atom-interferometry test of Einstein's weak equivalence principle in permanent free fall, and matched the two isotopes' accelerations to five parts in 100 million.
PhysicsThey Split an Atom's Wave in Two, Let One Half Fall, and Watched Einstein's Oldest Idea Survive
A team including Roger Penrose held one branch of a rubidium atom's wavefunction against gravity and dropped the other. The phase shift when they recombined matched the equivalence principle.
PhysicsPhysicists Propose the Universe 'Remembers,' Offering a New Path to Dark Matter and Dark Energy
A Leiden University team's 'Quantum Memory Matrix' theory suggests spacetime stores an imprint of every interaction, a single framework its authors say could also resolve the black-hole information paradox.
PhysicsPhysicists Propose Spacetime Itself May Have a Quasicrystal Structure — Ordered But Never Repeating
Researchers at the Perimeter Institute constructed a mathematical framework for spacetime that respects Lorentz symmetry but is organized like a quasicrystal — patterned without being periodic.
PhysicsScientists Detect Hidden Ripples in Spacetime Using Revolutionary Framework
Researchers create the first unified approach to identify tiny fluctuations that could unlock the mysteries of quantum gravity.
- Physics
Australian Physicists Observe Atoms Existing in Two Places at Once — A Quantum First
ANU researchers have demonstrated Bell correlations in the momentum of helium atoms for the first time, using massive particles instead of light to test quantum entanglement.
- Physics
Scientists Create Breakthrough Method to Detect Hidden Ripples in Spacetime
New unified framework could enable LIGO and smaller experiments to test quantum gravity theories much sooner than expected.
- Physics
Scientists Create First Unified Framework to Detect Hidden Ripples in Spacetime
Breakthrough allows LIGO and tabletop experiments to search for quantum gravity signatures that could unlock physics' biggest mystery.
- Physics
Scientists Solve Spacetime Fluctuation Mystery With Revolutionary Detection Framework
Researchers create the first unified method to detect tiny gravitational ripples that could unlock quantum gravity secrets using existing technology.
PhysicsScientists Edge Closer to Detecting Hidden Ripples in Spacetime Itself
Breakthrough provides first unified method to search for tiny quantum fluctuations that could reveal how gravity and quantum mechanics connect.
PhysicsScientists Unveil Revolutionary Theory of Universe's Origin Through Quantum Gravity
University of Waterloo researchers propose that the Big Bang's explosive expansion emerges naturally from deeper quantum gravity framework, offering testable predictions.
- Physics
Scientists Discover Bold New Theory Explaining How the Big Bang Happened
University of Waterloo researchers show universe's explosive early growth may emerge naturally from quantum gravity framework.
- Physics
Scientists Discover How Universe's Explosive Birth May Emerge From Quantum Gravity
University of Waterloo researchers propose that Big Bang inflation arises naturally from deeper quantum gravity framework, offering testable predictions for future experiments.
