Five-dimensional black holes offer a possible explanation for dark matter and neutrinos
A theoretical study predicts five-dimensional primordial black holes within a model containing a hidden extra spatial dimension.Some modeled…
Physicist proposes laser light could transfer energy to a gravitational wave
A theoretical proposal would use laser light to exchange tiny amounts of energy with a passing gravitational wave.Repeated…
Cosmic gamma rays test the limits of Einstein’s speed of light rule
A reanalysis of cosmic gamma-ray measurements found no evidence of the tested departures from Lorentz invariance.The researchers tightened…
Scientists Hunt for Tiny Black Holes Hidden in LHC Collisions
Physicists found no tiny black holes at the LHC, but they just made the hiding place for new…
CERN scientists find no evidence that the Large Hadron Collider created microscopic black holes
A new CMS analysis found no evidence that the Large Hadron Collider produced microscopic black holes or electroweak…
Mathematician Offers New Solution to a Fundamental Cosmic Paradox
A thermodynamic analysis of spacetime also points to an unexpected role for emergent dark energy and hints that…
Quantum Gravity May Be Far Less Quantum Than Physicists Expected
Physicists have long assumed that uniting quantum mechanics with gravity would require spacetime itself to behave quantum mechanically.…
Meet Sabrina Pasterski: Stephen Hawking cited her, NASA wanted her, but she chose physics
Most children dream of flying a plane. Sabrina Gonzalez Pasterski built one. By the time she was 14,…
Time may be an illusion derived from quantum entanglement
Time has always seemed like the one thing physics could count on. Matter changes, stars die, particles flicker…
Wormholes may enable time travel, astrophysicists find
A ring in space, at least on paper, can do something a black hole cannot. It can connect…
‘Mini Universe’ built from ultracold atoms measures time without a clock
A trapped cloud of ultracold atoms, colder than almost anything found in nature, has become the setting for…
24,000-atom mini universe demonstrates time flow without a clock
What if time isn’t woven into the fabric of reality at all? A new experiment suggests that the…