In 1963, the mathematician Roy Kerr found a solution to Einstein’s equations that precisely described the space-time outside what we now call a rotating black hole. (The term wouldn’t be coined for a few more years.) In the nearly six decades since his achievement, researchers have tried to show that these so-called Kerr black holes are stable.

We still don't know exactly what happens when black holes die. Ever since Stephen Hawking discovered that black holes evaporate, we've known that they can potentially disappear from our universe. But our understanding of gravity and quantum mechanics isn't powerful enough to describe the last moments of a black hole's life.

Scientists have created a new phase of matter, in which time has two dimensions. The creation of an “extra” dimension in time could change the way we think about matter as well as helping build quantum computers that could themselves change the world, according to the researchers who found it.

Two players leverage quantum rules to achieve a seemingly telepathic connection

We can model the motions of planets in the Solar System quite accurately using Newton’s laws of physics. But in the early 1970s, scientists noticed that this didn’t work for disc galaxies – stars at their outer edges, far from the gravitational force of all the matter at their centre – were moving much faster than Newton’s theory predicted.

The "most comprehensive studies" of the Higgs boson conducted to date reveal that the particle behaves just as expected and could help unlock some of the greatest mysteries of physics, including the nature of dark matter, scientists say.

Researchers have discovered a new particle that is a magnetic relative of the Higgs boson. Whereas the discovery of the Higgs boson required the tremendous particle-accelerating power of the Large Hadron Collider (LHC), this never-before-seen particle  —  dubbed the axial Higgs boson — was found using an experiment that would fit on a small kitchen countertop.

Even if you keep your distance, a black cat in your path is bad luck if you're superstitious. Similarly, in quantum physics, particles can sense the influence of magnetic fields with which they have no direct contact. Scientists have now demonstrated that this strange quantum effect applies not only to magnetic fields but also to gravity — and it's not a myth.

Investigating cosmic mysteries by smashing protons together.

The physics of the microrealm involves two famous and bizarre concepts: superposition and entanglement. Both are described mathematically by quantum theory, but many physicists believe that one day quantum theory will need to be replaced by an ultimate theory of reality that lies beyond quantum theory. Now, a team of physicists and mathematicians has discovered a new connection between these two weird properties that does not assume that quantum theory is correct. Their work, partially funded by the Foundational Questions Institute, FQXi, confirms that current quantum cryptographic protocols, which promise ultra-secure un-hackable...

Over the past 60 years, the standard model (SM) has established itself as the most successful theory of matter and fundamental interactions—to date.

The double-slit experiment is one of the most famous experiments in physics and definitely one of the weirdest. It demonstrates that matter and energy (such as light) can exhibit both wave and particle characteristics — known as the particle-wave duality of matter — depending on the scenario, according to the scientific communication site Interesting Engineering.

A seemingly intractable black hole paradox first proposed by physicist Stephen Hawking could finally be resolved — by wormholes through space-time. The "black hole information paradox" refers to the fact that information cannot be destroyed in the universe, and yet when a black hole eventually evaporates, whatever information was gobbled up by this cosmic vacuum cleaner should have long since vanished. The new study proposes that the paradox could be resolved by nature's ultimate cheat code: wormholes, or passages through space-time.

An elusive form of matter called a quantum spin liquid isn’t a liquid, and it doesn’t spin — but it sure is quantum. Predicted nearly 50 years ago, quantum spin liquids have long evaded definitive detection in the laboratory. But now, a lattice of ultracold atoms held in place with lasers has shown hallmarks of the long-sought form of matter, researchers report in the Dec. 3 Science.

It's become increasingly clear that quantum computers won't have a single moment when they become clearly superior to classical hardware. Instead, we're likely to see them becoming useful for a narrow set of problems and then gradually expand out from there to an increasing range of computations. The question obviously becomes one of where the utility will be seen first.

The international Forward Search Experiment team, led by physicists at the University of California, Irvine, has achieved the first-ever detection of neutrino candidates produced by the Large Hadron Collider at the CERN facility near Geneva, Switzerland.

The hunt for mysterious theoretical particles known as sterile neutrinos has turned up empty again. Neutrinos are extremely light subatomic particles that barely interact with regular matter. There are three known types and the search for a fourth has been going on for decades. Now, a new set of analyses has failed to find any sign that it exists.

Scientists just broke the record for the coldest temperature ever measured in a lab: They achieved the bone-chilling temperature of 38 trillionths of a degree above -273.15 Celsius by dropping magnetized gas 393 feet (120 meters) down a tower.

Researchers working in partnership with Google may have just used the tech giant's quantum computer to create a completely new phase of matter — a time crystal. With the ability to forever cycle between two states without ever losing energy, time crystals dodge one of the most important laws of physics — the second law of thermodynamics, which states that the disorder, or entropy, of an isolated system must always increase.

Not much is known about the vortex beams’ properties at the moment, but scientists plan to learn more by crashing them into other particles.