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In 1969, Roger Penrose showed that a rotating black hole has a region outside the horizon — the ergosphere — where some of its rotational energy can be extracted. The mechanism: a particle, entering the ergosphere, moves along a complex orbit and splits into two. One of them can escape to infinity with energy greater than that of the original particle, while the second falls into the hole, carrying away negative energy (according to distant clocks) and opposite angular momentum. As a result, the black hole slows down, and the surplus energy goes to the ejected particle. The maximum efficiency of the process can reach 20.7% for a hole with critical spin. This explains how supermassive black holes in quasars can generate colossal radiation fluxes.

How it works

Requires a rotating (Kerr) black hole with an ergosphere — the region between the event horizon and the static limit, where no body can remain at rest but must rotate in the direction of the hole's spin. Energy is extracted from the ergosphere via 'negative' trajectories: the infalling particle carries away angular momentum opposite to the spin, reducing the hole's energy. In nature, it may power ultra-powerful jets from galactic centers.

💡 The Penrose process is a cosmic analogue of energy 'theft': as if you threw a ball at a propeller and it bounced back faster, slowing down the propeller.
E = -p_\mu \xi^\mu
E — энергия частицы, измеренная удалённым наблюдателем, p_μ — ковариантные компоненты 4-импульса частицы, ξ^μ — времениподобный вектор Киллинга пространства-времени, который на бесконечности совпадает с направлением времени.
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Discovered by
Roger Penrose
Related concepts
black holeangular momentumevent horizon
Related laws
Hawking radiationBekenstein-Hawking entropyEinstein field equations

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arXiv:2512.05099 · 2025-12-04

Long-lived black holes: how their slow boiling is heard in a radio signal from the past

New research shows that tiny black holes don't explode; instead, like a cooling kettle, their own radiation creates a 'blanket' and slows the process. This heat should have warmed ancient hydrogen, altering its 21-cm radio signal. But observations say the signal is colder. So black holes can't be da
arXiv:2512.06941 · 2025-12-07

Vortons: Invisible Rings of Dark Matter

Scientists calculated how light and matter move near vortons—rotating loops of spacetime. It turns out their gravity creates bizarre trajectories and can reveal their presence through distortions of starlight. This is a new way to search for the universe's hidden mass.
arXiv:2512.07364 · 2025-12-08

The Twinkling of Quasars and the Variable Dark Energy

Astronomers noticed that the light of quasars flickers like a candle flame. By analyzing the flickering pattern, they can determine the quasar's true brightness and calculate its distance. This allowed them to peer into the Universe's past and see that dark energy may not have been constant over tim
arXiv:2512.07931 · 2025-12-08

Quantum Mpemba Effect: Chaos Orders Itself Faster

Scientists found a quantum analogue of the Mpemba effect: strong disorder settles faster than weak. The key lies in protected subspaces that are not destroyed by the environment. The larger the system, the faster the calming. The discovery paves the way to stable quantum computers.
arXiv:2512.13509 · 2025-12-15

Quantum Bubbles: A New Source of Gravitational Waves

In the hot early Universe, much like bubbles in boiling water, regions of a new state of space emerged. Some of them possessed an enormous number of microscopic states, rendering them quantum-entangled. The merger of such bubbles generates gravitational waves that carry information about their quant
arXiv:2512.13947 · 2025-12-15

The 'Chef' Black Hole That Prevents Star Birth

The model shows: the chef black hole heats galactic gas, preventing stars from igniting, and ejects metal-rich material while pulling in fresh gas. This explains the near-total lack of heavy elements in galaxy Abell 2744-QSO1 and the unusual ratio of the hole's mass to stars.
arXiv:2512.14066 · 2025-12-16

How to Swap Your Reality Without Knowing

A new idea called reality steering lets you switch between parallel branches of reality by erasing your memory of an event. The catch: the switch is invisible from the inside, so you can never be sure it happened. This turns philosophical 'what if' questions into a precise physics puzzle.
arXiv:2512.14377 · 2025-12-16

Dark Matter: A Hidden Threat to Neutron Stars

In a five-dimensional space, gravity behaves differently, and a tiny cloud of dark matter inside a neutron star can compress it into a black hole. The hole grows, devouring the star, thereby ruling out many possible compositions of dark matter.
arXiv:2512.14837 · 2025-12-16

Gravity vs. Superposition: Why the World Isn't Blurred

Scientists discovered that an object's own gravity destabilizes quantum superposition: the object quickly loses its fuzziness and ends up in one place. The collapse time is inversely proportional to mass—for heavy bodies it's almost instantaneous. The effect works even in free fall, explaining why l
arXiv:2512.15393 · 2025-12-17

A Middleweight Black Hole Exposed by a Torn Star

The flare AT2018cqh in a dwarf galaxy turned out to be the trail of a star torn apart by a middleweight black hole. These objects are the missing link between tiny and giant black holes, and they are extremely hard to find. This discovery offers a new way to hunt for the invisible.
arXiv:2512.16568 · 2025-12-18

Heat from the void: how to catch the Unruh effect

The Unruh effect predicts that the vacuum appears hot to an accelerating observer. But for ordinary particles, this heating is vanishingly small. New work explains how to bypass the impasse: in a superconducting circuit, an ultra-light 'effective mass' is created, making the thermal glow of accelera
arXiv:2512.17959 · 2025-12-18

The Quantum Coin: Bohr & von Neumann's Solution

A neo-Bohrian interpretation dissolves the measurement problem: the infinite complexity of instruments makes classical concepts not a convenient convention but a mathematical inevitability. A particle, like a spinning coin, is forced to reveal a definite result upon contact with the macroscopic worl
arXiv:2512.18400 · 2025-12-20

Black holes behave like boiling water

Using a new mathematical approach in gravity equations, scientists obtained an unusual type of charged black holes. Their thermodynamics strikingly resembles the behavior of water boiling: a critical point was found, and the ratio of pressure, volume, and temperature at it is constant. This brings t
arXiv:2512.19200 · 2025-12-22

Gravitational Echo Will Reveal the Number of Primordial Black Holes

Future gravitational wave detectors will see millions of black hole mergers. Sometimes the signal won’t arrive just once—massive invisible objects, like mountains, will create echoes. By measuring the delays between repeats, scientists will determine what fraction of dark matter is made up of primor
arXiv:2601.01034v2 · 2026-01-03

The Minimum Length and the Surprises of Quantum Physics

If space-time isn't smooth but grainy, like the pixels in a photo, a particle's usual momentum gains an imaginary, blurred part. But the main surprise: this 'pixelation' spontaneously entangles quantum states—no kicks or collisions needed. This new face of nonlocality promises a breakthrough in quan
arXiv:2601.02413 · 2026-01-03

Ghost Neutrinos: Born in the Coronas of Black Holes

Scientists have discovered that quiet galaxies with hot coronas, rather than bright jets, generate almost all the neutrinos that reach Earth. The finding, made with the Antarctic IceCube detector, changes our understanding of the origin of these elusive particles.
arXiv:2601.01533v2 · 2026-01-04

Cosmic Explosions: The Secret of the Strange Vortex Star

An ergostar is a theoretical remnant of neutron star mergers that spins so fast it twists spacetime. Long thought to be unstable and quickly collapse into black holes, a new study suggests that if it consists of 'strange' matter (quark soup), it becomes stable, and its rotational energy is enough fo
arXiv:2601.01949v1 · 2026-01-05

Black Holes as Ghost Particle Accelerators

Using computer simulations, scientists uncovered how natural particle accelerators work in the searing coronas around supermassive black holes. Shock waves in the plasma transfer about 10% of their energy to protons—even from mild shocks. This explains why neutrinos arrive from active galaxies while
arXiv:2601.01999v2 · 2026-01-05

A Black Hole Like a Bell: How a Light Pulse Gives Rise to Echoes

Light delayed by a black hole generates a prolonged echo with bright bands—like a bell tolling after a strike. Physicists recreated this on a tabletop using a curved surface, and can now study the echoes in the lab.
arXiv:2601.02197 · 2026-01-05

Mysterious Dark Object Challenges Theories

The cosmic lens effect offered a peek inside an invisible object with the mass of a million Suns. Its structure contradicts established theory: the density is uniform throughout, and a black hole likely hides at the center. Perhaps dark matter particles can collide.
arXiv:2601.02466v1 · 2026-01-05

Why Magnetic Fields Make Black Holes Quiet

Researchers found: the thicker the disk around a black hole, the rarer objects collide. Magnetic fields puffing up the disk can cut merger rates by billions of times. Astrophysicists must rethink gravitational wave forecasts.
arXiv:2601.02487v2 · 2026-01-05

A Lunar Telescope Will Reveal the Shadows of Distant Black Holes

Combining antennas on Earth and the Moon will deliver incredible sharpness. Astronomers have selected six black holes in alien galaxies whose silhouettes will become visible. The real twist: to glimpse the thinnest ring of light around them, we'll need antennas floating in space between planets.
arXiv:2601.02812v2 · 2026-01-06

Perfect Entanglement Defies Infinite Acceleration

Usually acceleration destroys quantum entanglement—the invisible bond between particles. But in a new study, physicists found a four-particle state where entanglement freezes entirely at its maximum level. This challenges old notions and paves the way for ultra-stable quantum links in space.
arXiv:2601.02976 · 2026-01-06

Black Holes 'Weigh' the Expansion Rate of the Universe

Analysis of 137 black hole mergers revealed three favorite masses: around 10, 18, and 33 solar masses. A flexible analysis, like a tuner, picked out these 'notes' more precisely than previous methods. As a result, the expansion rate of the universe was refined by 21%. This shows that the better we h
arXiv:2601.03347v2 · 2026-01-06

Distant Quasar Sets Gamma-Ray Record

Astronomers observed a gamma-ray flare from a quasar — the ultra-bright core of a galaxy with a black hole inside. The light traveled for 7 billion years. Unexpectedly, it turned out to have originated not from the hole itself, but from the dust ring surrounding it. This helps us understand how blac
arXiv:2601.03873v2 · 2026-01-07

How a Crystal’s Hidden Order Sharpens Gamma-Ray Telescopes

Gamma rays are hard to catch. In a telescope’s crystal detector, they create a particle shower that usually fans out, demanding heavy hardware. But if the crystal’s atomic grid aligns with the ray, the shower tightens. A small, oriented crystal then does a better job, even measuring the gamma ray’s
arXiv:2601.04129v2 · 2026-01-07

Invisible Vortices Sculpt Supermassive Black Holes

In the early universe, giant black holes were born at a dizzying pace. The key lies in a dance of invisible fields: the trembling of the axion field and dark photons created vortex mixers that prevented matter clouds from fragmenting and whisked away their spin. Thus, quantum crumbs sculpted the see
arXiv:2601.04145v1 · 2026-01-07

Galactic Bubbles: How Black Holes Paint the Cosmos

Simulations reveal that giant bubbles in the Circinus galaxy are sculpted by narrow black hole jets, not stellar winds. This unlocks the secret of how black holes govern galaxy growth.
arXiv:2601.04317v1 · 2026-01-07

How Giant Black Holes Are Born in the Early Universe

A computer simulation of the early universe revealed: supermassive black holes are born from plump seeds with a million solar masses and grow into giants in mere hundreds of millions of years, explaining the mysterious 'little red dots' seen by the Webb telescope.
arXiv:2601.04955v1 · 2026-01-08

Black Holes as Unexpected Beacons of the Early Universe

It turns out that black holes were 3–4 times brighter in ultraviolet light than scientists believed. This raises their contribution to the clearing of the universe to 20%, and possibly higher when dim nuclei are considered. A new model of active galactic nuclei changes the view of reionization.
arXiv:2601.05316v1 · 2026-01-08

Fireworks Called Off: Star Shrouded in Smoke

Some massive stars die without an explosion, quietly collapsing into a black hole. James Webb Space Telescope observations of the suspicious star M31-2014-DS1 showed it didn't vanish: a dusty cloud glows in its place with no X-rays. Possibly it's not a solo death but the merger of two stars shrouded
arXiv:2601.05317v1 · 2026-01-08

A black hole tore a star apart and sent a ghost particle

A single neutrino, caught by an Antarctic telescope, coincided with a flare from a star being torn apart by a black hole. The discovery showed that such catastrophes give birth to ghost particles. Now we know one of the sources of cosmic neutrinos.
arXiv:2601.05601v1 · 2026-01-09

A black hole rings nonlinearly: new gravitational overtones heard

In the gravitational waves from the black hole merger GW250114, nonlinear overtones—vibrations born from the interaction of the fundamental tones—have been directly detected for the first time. This discovery proves the complex nature of strong gravity and provides a new way to test relativity.
arXiv:2601.05734v1 · 2026-01-09

The Quiet Death of a Star

In the Andromeda galaxy, a star faded away without a flash. James Webb and the Chandra telescope saw a dim object in a dust cocoon. This proves that a black hole can be born in the quiet collapse of a star, not just in the fire of a supernova.
arXiv:2601.05774v2 · 2026-01-09

Tiny Black Holes Rip Atoms Apart

Scientists have shown that atom-sized black holes might be dark matter. With their gravity, they rip apart hydrogen atoms, leaving flashes. These traces can be found in ancient radio waves and chemical anomalies — that's how the invisible mass will be discovered.
arXiv:2601.05935v2 · 2026-01-09

Red Eyes: Cosmic Lens Reveals a Pair of Black Holes

Using a gravitational lens — a massive cluster of galaxies bending light — the James Webb Space Telescope detected two red dots in a distant galaxy. These are intermediate-mass black holes, located not in the center but on the outskirts. The discovery suggests such invisible objects might be widespr
arXiv:2601.06015v1 · 2026-01-09

Why neural networks are like black holes: a lesson from 'bald' models

Inside language models like LLaMA lie tangled patterns, their strength depending on the training method. But to an outside observer, the model always yields the same result—much like a black hole that 'forgets' every detail of the matter it swallows. This explains why simple fine-tuning methods are
arXiv:2601.06788 · 2026-01-11

Tiny black holes explain galaxy flows and the expansion of the Universe

A new study suggests dark matter isn't particles but a swarm of minuscule black holes. Born right after the Big Bang, like heavy dumplings in a cosmic soup, they quickly stirred up the surrounding matter, creating swift galaxy flows. The lightest of them evaporate, adding energy to the early Univers
arXiv:2601.07106 · 2026-01-12

How Gravitational Waves Twist Light

Scientists have described for the first time a mechanism by which gravitational waves flip the twist of light. The effect resembles the action of sugar syrup on polarization, but here curved spacetime does the work. The exchange of spin between the wave and the photon is rigidly fixed: gravity's spi
arXiv:2601.07179v1 · 2026-01-12

Quantum Echo: How Memory Changes the Fade

The old rule assumed an instant-forgetting environment. New work shows that real environments, with even a trace of memory, let quantum states linger longer initially – like a soft echo rather than an abrupt stop. This insight could reshape quantum computing and our understanding of reality.
arXiv:2601.07689 · 2026-01-12

Why Black Holes Can't Merge Without Gas

Astrophysicists discovered that stars alone aren't enough for supermassive black holes to merge — gas plays the decisive role. It not only brings the pair together but also makes them shine, revealing the merger long before the finale.
arXiv:2601.07762v1 · 2026-01-12

How to Hear a Swarm of Black Holes

Future detectors will catch the hum from mergers of tiny black holes. New work shows how to distinguish this hum from other sources by its volume and frequency, and peer into the first second after the Big Bang.
arXiv:2601.07774v1 · 2026-01-12

A Spinning Top at the Galaxy’s Core Snuffs Out Stars

Scientists studied the galaxy VV 340a, where the jet from its central black hole wobbles with a period of about 800,000 years. It sweeps away gas—roughly 19 solar masses per year. The superheated gas leaves the galaxy, and star formation shuts down.
arXiv:2601.08791v1 · 2026-01-13

Primordial Black Holes Build Early Galaxies

The James Webb Space Telescope has spotted enormous black holes in the young universe that couldn't have grown in the usual way. Their secret might be primordial black holes—tiny objects from the universe's first moments. Playing the role of dark matter, they rapidly merged at the centers of galaxie
arXiv:2601.08936v1 · 2026-01-13

Echo of a Silenced Black Hole

Astronomers measured the polarization of light from GSN 069—the direction in which its waves oscillate. The farther from the center, the more ordered the light became. This pointed to an extinguished active nucleus: the black hole once blazed brightly, and distant clouds still reflect its former bri
arXiv:2601.08940v1 · 2026-01-13

A Black Hole with an Icy Surface

Scientists have proposed a model of a black hole where matter and light freeze at the edge, like a whirlpool gripped by ice. Its shadow betrays itself with unexpected brightness—a path to testing quantum gravity.
arXiv:2601.10806v2 · 2026-01-15

X-ray Thunder After Gamma-ray Lightning

Astronomers have directly proven for the first time that a short gamma-ray burst is followed by a prolonged phase of soft X-ray emission. The discovery by the Einstein Probe telescope links gamma-ray bursts with gravitational waves and will allow more precise localization of neutron star and black h
arXiv:2601.14137 · 2026-01-20

Red Dots in Space Turned Out to Be Growing Black Holes

Data from the James Webb Telescope showed: mysterious red dots in the early universe are growing black holes. They emerged directly from gas clouds, without forming stars, and are now devouring matter at an incredible rate. This explains how supermassive black holes managed to grow so quickly.
arXiv:2601.14368 · 2026-01-20

The Moon as a Gravitational Wave Detector

The first accurate model of the Moon's response to gravitational waves reveals: uneven crust amplifies the signal tenfold. Energy transfers into extra vibration modes — like a bell with irregular walls. This will help pinpoint the ideal location for a lunar detector capable of catching the 'echo' of
arXiv:2601.16567 · 2026-01-23

Quantum Leap Through the Black Hole of Computation

Scientists have developed a quantum method that quickly solves the maximum independent set problem—one of the toughest optimization challenges. Instead of getting stuck for ages like classical computers, the new algorithm uses interference, as if two waves cancel each other out, smoothing the path t
arXiv:2601.17686 · 2026-01-25

Lack of Information Accelerates the Universe

Scientists have found a new explanation for why measurements of the universe's expansion rate don't match: a tiny fraction of information may be 'erased' from its visible edge. This shortage creates extra energy that slightly accelerates expansion in the last few billion years, without affecting the
arXiv:2601.17938 · 2026-01-25

Spun to the Limit: Black Hole Bypasses Laws

A numerical experiment showed that in five-dimensional space, an ordinary black hole can reach maximum spin in finite time, as well as emerge from nothing. This is the first violation of the third law of black hole mechanics in pure gravity, forcing a rethinking of the evolution of such objects.
arXiv:2601.20955 · 2026-01-28

Black Hole with Double Flashes

Five years after ripping a star apart, a black hole in a distant galaxy is emitting regular X-ray emissions: every 12 hours, a powerful flare, and on its crest, micro-bursts. Astronomers explain this by oscillations in the gas disk, churned up by an unseen companion, and in the future, such systems
arXiv:2602.03932 · 2026-02-03

Cold Water Trail in the Red Dots of Space

The James Webb Telescope discovered that the mysterious red dots are not hot disks around black holes, but dense clouds of water vapor with temperatures around 2000–4000 °C. This reduced the mass estimates of black holes by an order of magnitude.
arXiv:2602.06024 · 2026-02-05

Black Holes Are Born When the Universe Bounces

The universe behaves like a spring: it periodically compresses and then expands again. During compression, dense clumps form that survive the bounce and become the seeds of black holes and dark matter. This model explains the origin of dark matter, why supermassive black holes appeared so early, and
arXiv:2602.17702 · 2026-02-08

Dark matter from eternal inflation

Tiny black holes, born in ever-expanding pockets of the universe, may make up all dark matter. This scenario not only explains its abundance but also predicts a detectable hum of gravitational waves.
arXiv:2602.08338 · 2026-02-09

Invisible Black Hole Shreds Star in a Galactic Suburb

Normally, black holes rip stars apart in the centers of galaxies. A new discovery shows that some black holes lurk in the outskirts. Astronomers spotted a flare tens of thousands of light-years from the center of a large galaxy. A computer algorithm trained on similar events helped identify it. Soon
arXiv:2602.10180 · 2026-02-10

Black Hole Did Not Destroy Quantum Entanglement

Physicists tested a special entangled state of four particles near a black hole. Usually, temperature and gravity destroy any quantum bonds, but here the entanglement remained maximal, as if frozen. This is the first case where strong gravity does not suppress but preserves a quantum link.
arXiv:2602.11586 · 2026-02-12

The Quiet Phantom Before a Black Hole Rings

Scientists have discovered that after a collision, black holes don't immediately start to 'ring'. A hidden pause occurs — a phantom trap that holds back gravitational waves. The silence ends with a sudden burst. This discovery changes our understanding of how black holes settle down and provides new
arXiv:2602.12101 · 2026-02-12

A black hole can turn into a wormhole

Scientists have modeled how streams of negative energy transform a black hole into a stable wormhole. Colliding, they create a through-tunnel that doesn't collapse. This is a new look at the birth of traversable portals.
arXiv:2602.13609 · 2026-02-14

Wormhole Shadow: Sharp Angles When Rotating

New calculations show: if a wormhole rotates and lets light pass through its throat, its shadow unexpectedly gains jagged edges. The sharp transition from a smooth shadow to a 'gear' could help tell wormholes apart from black holes in telescope images.
arXiv:2602.14182 · 2026-02-15

Baby Black Holes and Giants: One Law for All

Black holes of any mass obey a single rule when ejecting matter. This was discovered by observing how supermassive black holes tear apart stars. The ejection mode changes when the brightness drops to 2% of the critical threshold beyond which light would blow away matter. This explains mysterious jet
arXiv:2602.14838 · 2026-02-16

Black Hole Throws Off Its Rhythm

At the supermassive black hole 'Ansky,' X-ray flares follow a steadily slowing rhythm. Each day, the gap between them grows by nearly half an hour. This defies all models: when a star falls into a black hole, flares should speed up, not slow down. The cause remains unknown.
arXiv:2602.16776 · 2026-02-18

Black hole vortex shifts quantum rhythm

When a black hole spins, it drags spacetime with it, like a spoon stirring thick honey. This cosmic vortex can alter the internal rhythm of quantum particles even when they feel no forces. Scientists have calculated that for a supermassive black hole this shift reaches 10²⁴ radians — a number that m
arXiv:2602.20337 · 2026-02-23

Quantum Analog of a Black Hole in an Atomic Cloud

Physicists turned a tiny cloud of cold atoms into a black hole mimic: inside a light-made cell, the particles streamed only one way. The reason? Their strong mutual interactions create a boundary of no return, just like an event horizon. This breakthrough could lead to microscopic circuits running o
arXiv:2602.20508 · 2026-02-24

The Elusive Lightweight Black Hole: Key to Dark Matter?

Gravitational wave detectors caught the merger of two objects with a total mass less than the Sun's. Such black holes aren't born from stars—they could be primordial black holes, formed in the era described by the Standard Model of physics. Perhaps they actually make up dark matter. Calculations sug
arXiv:2602.21295 · 2026-02-24

A Flashlight Wrapped in Red Tape: Why Active Cores Change Color

Scientists have explained the mystery of "red dots" in the early Universe: it's all about the viewing angle. If an active core is seen edge-on, dust makes it dim and red; face-on — bright and blue. Like a flashlight wrapped in red tape: straight on, the light is white; from the side, it's red.
arXiv:2602.22386 · 2026-02-25

Shadows of Colossal Black Holes on Ancient Light

Supermassive black holes heavier than a trillion Suns have an unexpected property: their shadow doesn't shrink with distance—it grows. This helps astronomers set strict limits: black holes with masses over a hundred million billion Suns simply cannot hide in the observable Universe.
arXiv:2602.22587 · 2026-02-26

Can Gravity Repel? A Quantum Trick

Scientists have found that a body smeared across two points simultaneously can repel gravitationally. The weak negative value effect makes attraction turn into a push. This suggests the fabric of spacetime itself follows quantum laws.
arXiv:2602.22715 · 2026-02-26

New Sensors Open Low Frequencies for Gravitational Waves

The low frequencies of gravitational waves were drowning in the constant shaking of the planet. Now laser stabilizers, 100 times more sensitive than the old ones, dampen this noise like active noise-canceling headphones. At 10 oscillations per second, sensitivity skyrockets tenfold, making intermedi
arXiv:2602.23531 · 2026-02-26

Why can't large objects be in two places at once?

The mass of a large object warps space so much that any attempt to be in two places creates a deep energy well into which the object immediately falls. This explains why tables and rocks don't follow quantum laws, linking gravity to quantum physics and homing in on the measurement puzzle.
arXiv:2603.01811 · 2026-03-02

Black Holes with a Surprise from the Fifth Dimension

New research shows that if gravity leaks into a fifth dimension, black holes gain a minimum mass and never cool down to zero. This changes our understanding of their final fate and their connection to the quantum world.
arXiv:2603.07125 · 2026-03-07

Secret of a Black Hole's Fastest Chaos

Astrophysicists have shown: the merger of two non-spinning black holes always produces an object with maximally chaotic movement of light rays at the horizon. The discovery helps better decode gravitational waves and test general relativity.
arXiv:2603.08643 · 2026-03-09

Dark matter stars mimic black holes

A small neutron star, orbiting a huge ball of dark matter, accelerates its fall due to friction and creates gravitational waves. This signal closely resembles a black hole merger. Future detectors, like LISA, will be able to distinguish these cosmic impostors.
arXiv:2603.08795 · 2026-03-09

A Message That Cannot Be Copied

Scientists have proven the possibility of creating a cipher where two independent interceptors cannot simultaneously reconstruct the original message. The protection relies on fundamental laws of nature and does not depend on computational power.
arXiv:2603.08916 · 2026-03-09

Two massive black holes swept clean the center of a galaxy

Telescope images revealed a region in a distant galaxy where billions of stars had disappeared. The void was caused by a pair of supermassive black holes whose combined mass is an absolute record. The discovery helps understand the growth of giant galaxies.
arXiv:2603.10104 · 2026-03-10

How Charging a Battery Explains Time

Physicists proposed a model where clocks are replaced by a microscopic battery. Its charging speeds up or slows down depending on a hidden quantum mode—creating the effect of time flowing differently. This overturns our understanding: spacetime isn't the foundation of reality but an illusion woven f
arXiv:2603.11079 · 2026-03-10

Quantum Entanglement Helps Play Pong

Quantum entanglement, where particles are linked at a distance as if by an invisible thread, helps a computer learn Pong faster. A hybrid algorithm with quantum vision sees hidden connections and outperforms ordinary programs. Quantum effects step out of labs onto the playing field.
arXiv:2603.10289 · 2026-03-11

Black Holes Sing Gravitational Songs

Scientists have discovered how rapidly spinning black holes produce the lightest particles—axions. These particles accumulate and vibrate, emitting gravitational waves at a single constant frequency. The hum from millions of such holes in our Galaxy can already be 'heard' by existing detectors, open
arXiv:2603.15734 · 2026-03-16

Measuring Black Holes with Spacecraft Stopwatches

When a tiny black hole evaporates, it releases a gamma-ray flash. Nearby black holes produce curved waves; distant ones, flat. Timing differences between spacecraft can gauge that curve to measure distance. No nearby events yet, but future missions could spot primordial black holes — tiny heavy remn
arXiv:2603.16508 · 2026-03-17

Magnets Mimic Black Hole Secrets

Black holes are thought to destroy everything they ingest, but quantum physics demands that information persists. Physicists have now built a model with chains of tiny magnets that mimics a shrinking black hole. As the chain gets smaller, it naturally releases hidden information, mirroring the predi
arXiv:2603.17000 · 2026-03-17

Quasi-stars: Cocoons with a Black Hole Inside

Astronomers have modeled quasi-stars—objects where a black hole hides inside a gas cocoon. When accreting matter rapidly, such a cocoon shines tens of thousands of times brighter than the Sun and lives for millions of years. Comparisons with telescopes show that these cosmic giants may be lurking in
arXiv:2603.21714 · 2026-03-23

Ancient Black Holes Could Burst into White Holes

This study calculates how often ancient black holes could suddenly turn into white holes—events that would look like intense radio flashes from deep space. But the chance is extremely low, and only matches reality in very specific, precise conditions. Most evidence, from gravitational waves to gamma
arXiv:2603.22516 · 2026-03-23

How Dark Energy Dresses Up Black Holes

If dark energy is not constant but evolves, it accumulates around black holes as a 'cosmic hair'. This hair alters the black hole's ringdown pattern after a collision. Observing these shifts with gravitational wave detectors like LIGO and LISA offers a powerful new way to measure dark energy's prope
arXiv:2603.23634 · 2026-03-24

Quantum Computers Will Challenge Gravity

Relativity and quantum mechanics diverge at the micro level. A new approach: if a quantum computer surpasses the classical speed limit of computation, it becomes a test of quantum gravity. A lab needs 500 logical qubits, the cosmos—1,600. Commercial roadmaps promise to reach that milestone soon.
arXiv:2604.06322 · 2026-04-07

Wormhole on a quantum chip

On a quantum processor, they simulated a chaotic system of 8 entangled particles. It behaved like a hologram of a traversable wormhole. The sent signal passed through with different intensity depending on the sign — a key signature of such a tunnel. The experiment provides a way to test quantum grav
arXiv:2604.10090 · 2026-04-11

A One-Way Black Hole: The Shadow That Changes Shape

The path of light from a lamp to a camera is usually the same in both directions. But near a rotating black hole with a preferred direction in space, this isn't the case. If you swap the light source and the observer, the black hole's shadow transforms from an oval into a teardrop, as if in a one-wa
arXiv:2604.18101 · 2026-04-20

Hawking's Area Law: How Black Holes Test Quantum Gravity

Analysis of black hole mergers confirmed Hawking's law and turned it into a selection tool: only theories without extra mathematical terms survive. Moreover, the law itself leads to the entropy formula and the idea that the horizon might not be just a smooth sphere.
arXiv:2604.18669 · 2026-04-20

The Rhythm of Black Holes from the Early Universe

Scientists have discovered that in the expanding universe, primordial black holes are born rhythmically: their mass grows not smoothly, but in jumps, forming a repeating pattern. Previously, this behavior was only observed in models without expansion. The discovery suggests that the mass distributio
arXiv:2604.21520 · 2026-04-23

Quasi-Stars: Black Holes Inside Giant Stars

In the dense star clusters observed by the JWST, supergiants were born. If a black hole fell inside, it began to grow, feeding on the star. Thus, a quasi-star formed — a translucent giant living for an astonishingly long time. These objects explain the red dots in the images and produce gravitationa
arXiv:2604.22924 · 2026-04-24

How Comets Revealed Dark Matter's Secret

When invisible black holes pass through the Oort Cloud, they leave a trail: comets fly off in all directions, some even falling toward Earth. By comparing the actual frequency of comet appearances with calculations, scientists found that black holes a thousand times the mass of the Sun make up only
arXiv:2604.22961 · 2026-04-24

What Does a Black Hole's Ring with Dark Energy Sound Like?

Physicists have calculated how dark energy and hypothetical string clouds affect the vibrations of black holes. The calculations show how the ringing frequencies shift and how much more transparent the hole becomes to radiation. These results are a step toward detecting quantum black holes and study
arXiv:2604.24813 · 2026-04-27

Tiny black holes as dark matter

Scientists explored theories with extra heavy particles. In the early Universe, these particles briefly lowered the pressure of matter, facilitating the formation of black holes. This gave rise to objects with asteroid masses that could fully explain dark matter. Standard theories without such parti
arXiv:2604.26005 · 2026-04-28

Gravitational Waves Reveal the Cosmic Missing Link

Merging black holes and neutron stars send out gravitational waves. A neural network trained on these signals can instantly tell if a gap object—the missing link between neutron stars and black holes—is involved. Quick classification directs telescopes to the fleeting light of kilonovae, where heavy
arXiv:2605.00391 · 2026-05-01

Quieter Mirrors — Louder Universe

In gravitational-wave detectors mirrors must reflect light almost perfectly, but heat makes atoms tremble, creating noise. A new coating — a thin pattern plus a few layers — makes the mirror thinner and suppresses the shiver tenfold, opening the way to observing quieter cosmic events.
arXiv:2605.00714 · 2026-05-01

Lightning over the Horizon: The Collapse of Semiclassical Gravity in Black Hole Evaporation

The information paradox of black holes requires accounting for quantum effects in strong gravity. The semiclassical approach, proposed by Stephen Hawking, assumes that quantum fields on a fixed curved background lead to radiation and mass loss, but the backreaction of radiation on geometry is a crit
arXiv:2605.00780v1 · 2026-05-01

Self-propelled Pair of Black Holes

When two black holes orbit each other, they act like a boat with oars: they fling away passing stars and push themselves. This not only brings them closer but also causes the pair to shift, spin, and tilt. This explains why supermassive black holes are sometimes found far from the centers of galaxie
arXiv:2605.00976v1 · 2026-05-01

Cosmic Gong: How a Black Hole Rings a Wormhole

Scientists have calculated the gravitational radiation from a stellar-mass black hole radially falling into a thin-shell wormhole. The signal resembles rhythmic beats: a burst as the black hole approaches the throat from our side, and a deep silence as it plunges into another universe. Calculations
arXiv:2605.01216v1 · 2026-05-02

Even Ordinary Stars Give Birth to Black Holes When They Explode

Computer simulations show that most massive stars don't go supernova but instead collapse directly into a black hole. The resulting flash is distorted by gravity, turning into a ghostly ring.
arXiv:2605.01405 · 2026-05-02

Improvisation beneath the horizon: quantum bounce turns a black hole into a white hole

The event horizon of a black hole conceals not a point of infinite curvature, but a zone of quantum transformation, where time itself changes roles. New research in quantum gravity shows: the singularity vanishes thanks to relational dynamics — one of the metric variables serves as a clock, and the
arXiv:2605.01576v1 · 2026-05-02

Gravitational memory as a defect in the fabric of spacetime

The gravitational memory effect is mathematically identical to defects in crystals. Ordinary memory is like an extra layer of atoms, while spin memory is like a spiral. This model, consistent with Einstein's theory, makes the search for the elusive deformation more tangible, and pulsars could become
arXiv:2605.02975v1 · 2026-05-03

The Black Hole's Spin Signature: Polarization Ripples on Its Shadow

New research reveals a subtle mechanism: polarization doesn't just illuminate a black hole's shadow — it deforms it. The effect, predicted for rotating holes, is vanishingly small but fundamental: polarimetry transforms from a passive spectator into an active probe of extreme gravity. In a static sc
arXiv:2605.02136v2 · 2026-05-04

Black Holes: Light's Hidden States

Scientists have shown: black holes, like water, switch between states. The light ring around the hole is a mirror of these transformations. Whirls of light betray its inner temperature and pressure, making the invisible visible.
arXiv:2605.02429 · 2026-05-04

Phantom Chords of Gravity: Boson Stars as Keepers of Quantum Memory

Quantum systems typically evolve toward equilibrium, losing all memory of their initial state. But occasionally, 'scars' are born — anomalously stable, weakly entangled states that challenge thermalization. New research shows that boson stars in anti-de Sitter space realize such scars, combining cha
arXiv:2605.02446v2 · 2026-05-04

How Particle Clouds Bend Light Rays

Light curves around massive bodies — that's gravity's rule. The new method also factors in hadron clouds: specks of matter that slow light down and deepen the bend. A simple formula tied to cloud density will give astronomers sharper shots of black holes.
arXiv:2605.02807v2 · 2026-05-04

Squeezed Gravitational Waves: How Quantum Optics Reveals the Voice of Black Holes

Black hole collisions transform the quantum whisper of spacetime into a roar that LIGO detectors can catch. Analysis shows that multi-particle graviton emission organizes into a generalized squeezed coherent state, exponentially amplifying fluctuations. Thanks to the double copy between QCD and grav
arXiv:2605.03038v1 · 2026-05-04

Primordial [tag:black_hole]black holes[/tag]: cracking the [tag:gravitational_waves]gravitational hum[/tag]

Primordial black holes are the key to two puzzles. They may make up dark matter (an idea by Vera Rubin and Fritz Zwicky), help black holes grow by generating a gravitational hum, and explain the giant black holes in early galaxies spotted by the Webb telescope.
arXiv:2605.03156v1 · 2026-05-04

Cosmic Tuning Fork: Earth and Moon Resonate with Gravitational Waves

A novel laser ranging technique aims to fill the microhertz gap in gravitational-wave astronomy. By exploiting resonant enhancement at the second harmonic of the Moon’s orbit and phase measurements precise to 80 micrometers, a five-year campaign could reach a sensitivity of Ω_gw ≈ 5×10⁻⁹ — enough to
arXiv:2605.04110v1 · 2026-05-04

The Quiet Overtones of a Black Hole Are Now Heard Louder

Using a method similar to tuning an equalizer, scientists isolated a quiet overtone in event GW250114. Its confidence level rose from 82.5% to 99.9%, fully confirming Einstein's theory.
arXiv:2605.03576 · 2026-05-05

How long does a black hole live? A new answer from quantum physics

Black holes are not eternal: they slowly lose energy, a process first described by Stephen Hawking. New research shows that when a hole almost disappears, a tiny reverse object remains — a white hole. Like a dying ember, it slowly releases the captured information. This resolves the long-standing pa
arXiv:2605.03922v1 · 2026-05-05

How to Peer into the Heart of a Black Hole

Astronomers are turning scattered radio dishes across Earth into a single instrument, which, after an upgrade, will film black holes like a big-budget blockbuster—with unprecedented detail. This will let us witness the birth of giant jets of matter and check whether the law of universal gravitation
arXiv:2605.04133v1 · 2026-05-05

Breath of the Abyss: How a Black Hole's Horizon Pulsates to the Rhythm of Accretion

Analog gravity doesn’t freeze in weak perturbations. When gas roars onto a black hole, it gives birth to a living acoustic spacetime—a horizon that oscillates and shifts. Using an equation of state for ultrahot plasma with a variable adiabatic index, the authors showed that the horizon radius dances
arXiv:2605.04158v2 · 2026-05-05

Alchemy of the Void: Nonlocal Magic of Particle Birth

Schwinger pair production in gauge fields reveals the unexpected depth of the vacuum: instead of simple entanglement, nonlocal magic arises—correlations that cannot be described without a full-fledged quantum computer. Holographic duality links this magic to the geometry of strings and black holes,
arXiv:2605.04210v1 · 2026-05-05

Gravitational Shooting Gallery: Sighting in on Black Holes

For the first time, nonlinear simulations of black hole flybys in modified gravity have been performed — test shots on the cosmic range. Comparing the scattering angles with analytics hit nearly the bullseye: the difference stayed within one degree. This paves the way for rapid gravitational wave te
arXiv:2605.04224v1 · 2026-05-05

Cosmic Hourglass: The Flickering Shadow of a Wormhole

Numerical simulations revealed how plasma gets stuck in the throat of a rotating wormhole, painting a thin luminous rim on its shadow and making it flicker with a period set by mass and spin. These signatures, observable by the Event Horizon Telescope at 230 GHz, turn active galactic nuclei into nat
arXiv:2605.04631v1 · 2026-05-06

Tiny Black Holes Don’t Warp the Cosmos

It turns out: the birth of black holes in the first moments doesn’t disrupt the harmony of the large-scale structure. Small and large processes in the Universe are separated, like basses and flutes. Thus primordial black holes become legitimate candidates for dark matter.
arXiv:2605.04815v1 · 2026-05-06

Ashes of Inevitability: The Quantum Singularity of Evaporating Black Holes

The legacy of Penrose and Hawking asserted: the collapse of massive stars begets a singularity. But quantum evaporation casts doubt on the classical conditions, making us wonder if the core of a black hole is blurred by quantum fog. Engelhardt and Nagar put an end to it: by relaxing causality requir
arXiv:2605.05326v1 · 2026-05-06

The Invisible Artist: How Dark Matter Distorts Portraits of Black Holes

Simulating black hole images against different dark matter profiles revealed a frightening flexibility: a cored-NFW-type flattened halo noticeably inflates the bright ring, shifts its center, and amplifies asymmetry — almost exactly replicating real Event Horizon Telescope data. The Einasto profile,
arXiv:2605.05635v3 · 2026-05-07

Cosmic Magnifying Glasses Catch Gravitational Waves

When ripples in space from colliding black holes pass by a galaxy, it bends their path and makes the signal brighter — like a cosmic magnifying glass. This helps us hear the most distant cataclysms and weigh invisible dark matter.
arXiv:2605.06321v2 · 2026-05-07

Black Hole Horizon in a Causal Web

In a scenario where spacetime is a web of points and cause-effect connections, the authors demonstrate how to detect a black hole horizon. To do this, they used chains that mimic light rays and found that at the horizon, a characteristic of their divergence changes sign.
arXiv:2605.06813v1 · 2026-05-07

Nuclear Reaction Defines the Abyss for Black Holes

Stellar-mass black holes are almost absent between 60 and 120 solar masses—there yawns an abyss from pair-instability explosions. These blasts completely destroy the star. Where the edge lies is determined by the reaction of carbon with helium. New data: the abyss begins at 61–75 solar masses.
arXiv:2605.07027v1 · 2026-05-07

Fuzzy-nova: A Quantum Wave Dissolving Black Holes

According to classical theory, the collapse of a massive star ends in a black hole with a singularity, where the curtain of physical laws falls. Roger Penrose proved the inevitability of singularities, and Stephen Hawking showed that quantum effects create the information paradox. New work proposes
arXiv:2605.07848v2 · 2026-05-08

Gravitational Memory: A Key to Testing Gravity

Black hole collisions leave a permanent mark on spacetime—gravitational memory. Calculated for the first time within an alternative theory of gravity, it reveals striking differences at the moment of merger. This offers a novel way to test whether our theory of gravity is correct.
arXiv:2605.07879v1 · 2026-05-08

Fluffy Black Holes: The Flickering Tangle and the Paradox

Fuzzball black holes replace the event horizon with a dense, reflective boundary. New calculations show that entropy islands, meant to resolve the information paradox, behave erratically: they appear and vanish. In more realistic models, they don’t appear at all, hinting at the depth of the puzzle.
arXiv:2605.08347 · 2026-05-08

The Funeral March of Negative Mass: Why LIGO Doesn't Hear Anti-Chirps

A new study proposes a simple observational test: any binary system with a negative-mass component must either produce an anomalous signal with a falling frequency or instantly fly apart. Not a single such 'note' has been found in the LIGO, Virgo, and KAGRA archives. The silence shuts down an entire
arXiv:2605.10976v1 · 2026-05-08

Weighing the invisible: how light reveals the secrets of black holes

By comparing the redshift and blueshift of light from two symmetric points in orbit, scientists can calculate the mass and distance to a black hole. Gravity distorts the color, but a pair of beams allows its influence to be isolated. The method works even if the system is moving.
arXiv:2605.08582 · 2026-05-09

The Formula Governing the Magnetic Fields of Stars

The Grad–Shafranov equation is the key to understanding magnetic fields in hot gas. Previously, it had to be derived anew for each object. New work provides a general form that works both in tokamaks and near black holes. Modeling cosmic magnets has become simpler.
arXiv:2605.08597 · 2026-05-09

Symphony of Collapse: The Algebraic Key to Black Holes

At the heart of a dying star lies an algebraic cipher that translates the language of matter into the language of black hole geometry. Physicists have found a precise two-way map: given a density profile, you can recover the exterior metric—and vice versa—without solving complex differential equatio
arXiv:2605.08807v1 · 2026-05-09

Cosmic Instrument: Resonant Songs of Rotating Wormholes

By numerically investigating the scattering of scalar waves on a rotating traversable wormhole, scientists discovered Breit-Wigner resonances. They sharply intensify under fast rotation and for counter-rotating modes, creating a spectral fingerprint radically different from that of black holes—a sig
arXiv:2605.09426v1 · 2026-05-10

Stellar Mimicry: Boson Stars Pretend to Be Black Holes

The heart of the Milky Way, the object Sagittarius A*, might turn out not to be a black hole, but its perfect cosmic counterfeit — a boson star. Data from the infrared interferometer GRAVITY were compared with models of twelve such stars — giant scalar clumps — and the Bayesian verdict could not tel
arXiv:2605.09521v1 · 2026-05-10

Black Hole Protects Vacuum from Disturbances

Physicists have found that near a black hole, the well-known trick of birthing particles from emptiness stops working. Space is so curved that any mirror vibration must slow down, otherwise it would exceed the speed of light. The closer to the hole's edge, the more the motion fades, and with it, the
arXiv:2605.09783 · 2026-05-10

Astrons: Electric Leviathans That Defy Cosmology

Astrons — hypothetical relics of the early Universe with a mass on the order of 10¹² solar masses and a gigantic electric charge — could explain dark energy. However, rigorous analysis crushes the simple hopes: ordinary accretion does not yield the required charge, and phenomenologically interesting
arXiv:2605.10587v1 · 2026-05-11

Heat-Resistant Quantum Memory

Scientists have created a three-dimensional structure that, like a Russian doll, shields quantum information from thermal noise layer by layer. The qubit stays stable for a very long time, paving the way for quantum computers that operate without extreme cooling.
arXiv:2605.10943 · 2026-05-11

Laboratory Black Holes: Playing with Temperature

Researchers studied the behavior of miniature black hole analogues built from superconductors. They found that in these systems, the dependence of temperature on internal state can be turned on and off—a feature unavailable to real black holes. This paves the way for an engineering approach to under
arXiv:2605.11046 · 2026-05-11

Big Mysteries: Survey Reveals Physicists' Disagreements

Hundreds of scientists answered questions about the deepest mysteries of the Universe. The results showed that topics which seem settled in textbooks actually provoke fierce debate. Science is not a set of dogmas but a living dialogue, and this research confirms it.
arXiv:2605.11058v1 · 2026-05-11

AI Learns to Listen to Black Holes: A Simple Recipe for Gravitational Waves

Collisions between black holes shake spacetime itself, sending out gravitational waves. Decoding these signals used to require hours of computer simulations—until scientists built an AI agent. Like a chef reconstructing a recipe from taste, it finds a simple formula that nearly matches exact calcula
arXiv:2605.11280 · 2026-05-11

Lunar detector to hear ancient black holes

A supersensitive laser device will be built on the Moon—it will catch the trembling of space from the merger of intermediate-mass black holes. This will help peer into the early Universe and understand how galaxies grew. The detector will warn of a collision months in advance, so telescopes across E
arXiv:2605.11283v1 · 2026-05-11

Cosmic sous-vide: How slow reheating resurrects primordial black holes

Primordial black holes (PBHs)—candidates for dark matter—were long thought impossible to produce during phase transitions due to the gauge dependence of density contrast. However, new research shows that slow reheating after the transition creates a matter-dominated era where even weak perturbations
arXiv:2605.11332v2 · 2026-05-11

Polarization Echo: Light Catches the Gravitational Ringing of a Black Hole

A covariant approach has been developed, showing that light in the gravitational "storm" of merging black holes alters its polarization, tracing the damped melody of the ringdown. Numerical simulations based on Kerr perturbation theory confirm: an achromatic rotation of ~10 degrees is a direct impri
arXiv:2605.11499v1 · 2026-05-12

The Horizon's Silent Roar: The Fading Ring of Analog Black-White Holes

A new theoretical study demonstrates how analog black-white holes created in superconducting SNAIL chains respond to perturbations: they don’t explode, but quietly fade, emitting a pure dissipative tone. Supersymmetric quantum mechanics proves the absence of growing modes, and quasinormal frequencie
arXiv:2605.11565v1 · 2026-05-12

How the elongated merger orbit points to where the pair was born

When two dead bodies draw near in a dense stellar city, their orbit before impact becomes elongated, like a skid mark. This elongation tells about speed, and speed about place: in old globular clusters, stars move slowly, like on a quiet lane, while in nuclear clusters they race as if on a freeway.
arXiv:2605.11947 · 2026-05-12

Ancient Black Hole Jet Left a Gamma Trail in the Center of the Galaxy

Mysterious gamma-ray glow in the center of the Milky Way has been attributed for 15 years to either dark matter or pulsars. New work links it to the echo of an ancient jet: the same black hole Sagittarius A* ejected particles millions of years ago and inflated giant bubbles. Collisions of these part
arXiv:2605.12448v2 · 2026-05-12

The Dance of Light Around a Black Hole: How to Keep the Main Frame Sharp

Light from gas around a black hole takes different times to reach us. If not accounted for, rapid changes in an image get blurred. The study proposes an intermediate method, 'brisk light', which preserves important temporal details and is easy to compute. This is critical for future observations of
arXiv:2605.12659 · 2026-05-12

Black Holes: The Perfect Mask of the Abyss

All the headline discoveries — from mergers detected by LIGO to the image of M87*’s shadow — are interpreted as direct proof of black holes’ existence. But a careful analysis shows that the same signatures arise from any ultracompact horizonless object, if its radius differs from the gravitational r
arXiv:2605.13901v1 · 2026-05-12

The Bicycle Dynamo in Space: How Collapsar Jets Are Born

Three-dimensional modeling of a collapsing star has shown for the first time: from chaotic magnetic fields, a dynamo effect spontaneously arises, creating giant magnetic loops that feed oscillating jets. This mechanism explains the launch of long gamma-ray bursts and predicts their unusual 'striped'
arXiv:2605.12931 · 2026-05-13

Gravitational Radio Forest: How a Hydrogen Quantum Detector Reveals Dark Matter

Astrophysicists have proposed a new method for hunting dark matter — not searching for the black holes themselves, but listening to the quantum echo of gravity. In regions of ionized hydrogen, tidal forces from primordial black holes split the atomic level 2P₃/₂, turning a single 9.9 GHz absorption
arXiv:2605.13042v1 · 2026-05-13

The Universe Is a Finite Book You Can Never Read to the End

New research shows: if the Universe accelerates its expansion and is built from a finite set of quantum states, any model of it stays ambiguous. The culprit is quantum measurement. An observer inside such a Universe can only access a minuscule share of the total information. That's an unbreakable bo
arXiv:2605.13490 · 2026-05-13

Bottomless Black Hole: A Quantum Recipe

Usually, a black hole’s center is an abyss of infinite density. But quantum effects, like an invisible spring, create a cushion of resilience. Even without complex quantum gravity, simple laws of the microworld can turn black holes from dead ends into passages.
arXiv:2605.13508 · 2026-05-13

Graviton Laser: Translating Gravity into the Language of Light

The main obstacle for a graviton laser is that gravitational waves cannot be reflected: they pass through any substance. The solution lies in the Gertsenshtein effect. Under a powerful magnetic field, gravity particles temporarily become photons, which are easily reflected by ordinary mirrors. The r
arXiv:2605.14050v1 · 2026-05-13

Long-Throat Wormholes: How Doppler Notes Give Them Away

New research shows: wormholes with a precisely tuned throat length can cast a shadow indistinguishable from that of a Schwarzschild black hole. But numerical simulations expose a critical flaw in the disguise—the wormhole's accretion disk emits far more energetic radiation thanks to Doppler boosting
arXiv:2605.16413v2 · 2026-05-13

Gravitational Waves: A New Listener at the South Pole

A new type of gravitational antenna will be built in Antarctica. It will capture low-frequency space vibrations that are inaccessible to current detectors, allowing us to hear the cosmic symphony in previously unheard notes.
arXiv:2605.14279v1 · 2026-05-14

The Magic of Translation: From Black Holes to Electricity

The main formula for a black hole's thermal properties exactly matches the rule for how a charge creates an electric field. Translating from the language of gravity to the language of electricity brings us closer to a unified picture of the world.
arXiv:2605.14707v2 · 2026-05-14

Why Black Holes Don't Incinerate What Falls In

Scientists have shown that a black hole's interior and its radiation aren't separate entities. They're intertwined like pages in a book. This connection resolves the contradiction: the horizon stays smooth, and information about infalling objects doesn't vanish.
arXiv:2605.14794v2 · 2026-05-14

Gravitational Echo: How Black Holes Weave a Quantum Web of Gravitons

Quantum gravity eludes experiments due to the Planck scale. But the 2026 Gravity Research Foundation award-winning work points to a natural super-amplifier: superradiant axion clouds around rotating black holes. This cosmic mechanism generates squeezed states with up to 10⁷ correlated gravitons, cre
arXiv:2605.14797v1 · 2026-05-14

Black Holes: Quanta Won't Break Cosmic Censorship

Roger Penrose proved that special surfaces inside black holes – “trapped” – guarantee the formation of a superdense core, forever hidden behind the boundary of no return. Quantum effects could break this rule. A new “sufficiently trapped” surface restores reliability: black holes keep their secrets
arXiv:2605.14798v1 · 2026-05-14

Invisible Drums: How Gravitational Waves Give Birth to Black Holes

A mechanism is proposed in which gravitational waves from bubble collisions during phase transitions and domain wall annihilation induce second-order scalar inhomogeneities. These inhomogeneities can collapse into primordial black holes of asteroid masses, fully accounting for dark matter. Model-ind
arXiv:2605.15197v1 · 2026-05-14

How Brane Tension Changes Black Holes

Brane theory predicts that a hidden dimension weakens gravity. For light black holes in a dense particle cloud, this prevents horizon formation. Their shadow grows while the light ring shrinks — astronomers are hunting for these signs.
arXiv:2605.26124 · 2026-05-14

Black Hole Without a Dangerous Center

In the new model, the black hole lacks a deadly point: its center is a smooth, empty region. A key internal barrier makes the space dip gentle, avoiding infinities. This is a step toward a unified theory of gravity and quantum.
arXiv:2605.15576 · 2026-05-15

Ghost Black Holes: The Hunt That Comes Up Empty

An analysis of black hole mergers over the past year of observations reveals: almost all signals come from ordinary black holes of stellar origin. Primordial black holes, if they exist at all, make up only a tiny fraction of dark matter.
arXiv:2605.15749 · 2026-05-15

The Perfect Mirror: Quantum Fields on a Donut and the Geometry Within

Physicists found that the connection between two points on a donut exactly equals the length of the shortest path in the curved space within. This strict equality holds even for simple fields. Such an 'exact dictionary' simplifies calculations and hints at a deep link between quantum information and
arXiv:2605.15776 · 2026-05-15

Sound Trap in a Superfluid

Scientists have discovered that a rotating superfluid creates sound traps akin to black holes. They calculated specific frequencies at which sound resonates inside without escaping. This provides a lab model for exploring quantum effects and gravity theory.
arXiv:2605.16621 · 2026-05-15

Dark Matter Around Black Holes: How to Hear the Invisible

The future LISA detector will be able to catch distortions in gravitational waves from black hole mergers, caused by clouds of dark matter. If dark matter consists of ultra-light particles, their clusters act like a sound-absorbing fog. By changes in the 'ringing' of space, scientists will determine
arXiv:2605.17589 · 2026-05-17

Wormholes Without Exotic Matter

Ordinary wormholes need negative-energy matter to stay stable, and there's almost none in the universe. But if you rewrite the equations of gravity, the bends in space itself replace that stuff, keeping the hole from collapsing. This brings travel through such tunnels closer to reality.
arXiv:2605.18376 · 2026-05-18

Celestial Waves: Found in Just 16 Seconds

Collisions of neutron stars or black holes create ripples in spacetime—gravitational waves. Scientists need to know about such an event instantly to see its light. This is the story of GstLAL, a program that finds the signal in just 16 seconds and almost never shuts down. Thanks to it, out of 250 al
arXiv:2605.19153 · 2026-05-18

A Scout Probe Will Uncover the Mystery of the Nearest Black Hole

A journey to the nearest black hole will take a century, but for the first time it will test gravity's laws at their limits. The probe will set out on an automated voyage to understand: is it a bottomless pit in space or a super-dense star with a solid crust? The answer will rewrite textbooks.
arXiv:2605.19176 · 2026-05-18

How to Reconcile Two Neutron Stars

Observations of two cosmic cataclysms gave conflicting hints about neutron star density. New analysis shows that sound inside them can accelerate to nearly the speed of light, and the structure can be two-layered. This resolves the paradox while staying within relativity.
arXiv:2605.30369 · 2026-05-18

How Black Holes Erase Quantum Secrets

A quantum particle can be like a spinning coin—both heads and tails until observed. Near a black hole, a passing photon acts like a camera flash, forcing the particle to 'land' on one state. That photon then crosses the event horizon, adding a snapshot to the black hole's surface memory without brea
arXiv:2605.19588 · 2026-05-19

Invisible Middleweight Black Holes Discovered

The universe is full of black holes, but middleweights long eluded detection. Now distortions in radio signals have given them away, as if invisible masses altered the voice of distant bursts. These could be Big Bang relics hiding in dark matter.
arXiv:2605.19653 · 2026-05-19

Neutron stars could be more compact than black holes

Black holes are the record holders for compressing matter. But physicists have found a way for neutron stars to beat them in density: just add tiny corrections to the theory of gravity that kick in under extreme conditions. Calculations show that such ultra-dense stars are stable and can produce gra
arXiv:2605.19731 · 2026-05-19

Gravitons: A Double Twist in a Curved World

Gravitons — the quanta of gravity — split into two streams in curved spacetime depending on their spin. The effect, discovered by Michael Berry, causes particles with right- and left-handed spin to move in opposite directions, and for gravitons it is twice as strong as for light due to their double
arXiv:2605.19817 · 2026-05-19

A Vortex's Silent Patch Reveals Its Speed

Physicists have found that the shape of a water vortex's sound shadow can precisely measure its rotation speed. The main surprise: the mathematics of an ordinary sink plug and a giant black hole are the same.
arXiv:2605.20354 · 2026-05-19

Quantum Cloud Near a Black Hole

Near a black hole, the usual quantum rules for solitary particles break down. Physicists tweaked the equations and got a stationary cloud of such particles. This may explain matter's behavior at the horizon and even help unite micro-world physics with gravity.
arXiv:2605.21064 · 2026-05-20

Why baby black holes didn't put on a gravitational concert

The evaporation of primordial black holes was supposed to generate gravitational waves. But because of their inevitable mass spread, a loud signal becomes mere noise, restoring these objects' chance to be dark matter.
arXiv:2605.21474 · 2026-05-20

Where Do Intermediate-Mass Black Holes Hide?

Researchers trained a neural network on computer twins of star clusters to guess the main black hole. Comparison with real objects showed: giants are rare in globular clusters, while central clusters of galaxies might harbor middleweights. Unexpected twist: many black holes get a kick from the merge
arXiv:2605.21593 · 2026-05-20

When Black Holes Just Wave Hello

Most encounters of black holes are a long, tightening spiral dance ending in mergers. GW190521 was different: two holes shot past each other, swapping a brief “wave,” like strangers in a crowd. Gravitational wave detectors caught this rare signal.
arXiv:2605.21640 · 2026-05-20

How a Black Hole’s Magnetic Tilt Creates Matter

It turns out that the tilt of the magnetic field around a spinning black hole acts as a power regulator in a cosmic factory: the more precise the tilt, the more matter is born from emptiness. This explains where the energy for the brightest explosions in the universe — gamma-ray bursts — comes from.
arXiv:2605.21910 · 2026-05-21

How to Measure the Chaos of Spacetime Itself

A geometric way to measure the chaos of curved spacetime: entropy is calculated as the sum of disorder of all light rays passing through a region. For a black hole, the result matches the Bekenstein–Hawking formula, revealing a connection between gravity, information, and heat.
arXiv:2605.22172 · 2026-05-21

A Star Dances with Dark Matter Near a Black Hole

Astronomers used the orbit of star S2 near the black hole at the center of the Galaxy to measure invisible dark matter. The new model didn't require guessing the shape of the dark cloud—it adjusted itself to the observations. This opens the door to understanding how invisible mass governs the evolut
arXiv:2605.22210 · 2026-05-21

Gravity Born from Disorder: Physicists Find a Universal Recipe

From a single entropy 'recipe,' physicists derived both Einstein's equations and a method to calculate energy at the boundaries of space—like at the edge of a black hole. The approach even works for surfaces moving at light speed, and explains why energy can vanish at boundaries. It’s a unified view
arXiv:2605.22434 · 2026-05-21

Black Hole Pinball: How Spin Creates Dark Matter

Light caught in the gravitational trap of a spinning black hole bounces around like a pinball and, under the influence of magnetic fields, turns into axions—prime dark matter candidates. This process betrays itself by a dimming of high-energy emission. Future telescopes could spot this 'dimming' and
arXiv:2605.22696 · 2026-05-21

Black Hole Shrinks in an Expanding Universe

Scientists have for the first time combined a rotating black hole and the expansion of the Universe in a mathematical model. It turns out that in the inflating cosmos, its point of no return and the twisted region of space gradually shrink — even though the hole's mass remains unchanged. And mysteri
arXiv:2605.22895 · 2026-05-21

Black Hole Shadows Put Quantum Gravity to the Test

Images of the shadows of M87* and Sgr A* provided a way to test the predictions of loop quantum gravity. Quantum corrections slightly enlarge the shadow, and even without an event horizon, it remains a ring—classical models might be just an approximation.
arXiv:2605.28871 · 2026-05-23

The Black Hole's Record: Flare Rhythm Reveals Its Spin

Astronomers cracked the flare pattern of a distant galaxy. A tiny orbiting object repeatedly punches through a gas cloud — the remains of a torn-apart star. The cloud is bent, so some bursts shine brighter, others dimmer. This on-off rhythm unveils the central black hole's spin. In a few decades, th
arXiv:2605.24905 · 2026-05-24

Causality: Why It Can't Be Measured

In everyday life, cause always comes before effect. But quantum particles can communicate outside of time—events have no strict sequence. Physicists tried to figure out whether this 'muddle' could be considered a measurable quantity. It turns out, it can't: causal order refuses to obey the laws of m
arXiv:2605.25302 · 2026-05-24

Even a Slow Warp Violates Energy Rules

Scientists tested hundreds of warp-shell configurations that compress and stretch space. At the boundary between shell and void, the laws of ordinary physics were always violated. Even a static warp bubble is impossible without exotic matter.
arXiv:2605.25417 · 2026-05-25

How the Ringing of Black Holes Reveals Their Secrets

When two black holes collide, the resulting hole trembles, and this trembling tells us about its mass and spin. The new SPRING method accounts for not only the final ringdown but also how the holes circled before the impact. This allows us to more precisely decode the hole’s properties and test the
arXiv:2605.25623 · 2026-05-25

When Black Holes Turn Inside Out

The transition of a black hole into a white hole produces an immensely powerful gamma-ray burst. Scientists have calculated that such a burst creates far more light and lightweight particles than heavy nuclei. This makes it visible across half the universe; especially if primordial black holes the s
arXiv:2605.25709 · 2026-05-25

How Gravitational Wave Polarization Reveals Hidden Patterns of Space

Gravitational waves aren't just the hum of space. They have polarization, a direction of oscillation that has been ignored until now. A new approach, like polarized sunglasses, filters out glare from bright black hole mergers and reveals the background's true pattern for the first time.
arXiv:2605.25772 · 2026-05-25

Why Black Holes Dance Differently

Gravitational wave detectors have revealed three distinct black hole merger styles: a slow waltz, a chaotic disco, and a mixed dance. The difference points to their origin — either from binary stars or star clusters — and helps reconstruct the history of galaxies.
arXiv:2605.25980 · 2026-05-25

Quantum Generator: Images Without Training

The quantum approach eliminates training. An energy landscape is constructed, where the lowest point is the finished image. Quantum effects stitch together possibilities into a sharp, coherent visual. Fast, transparent, and without thousands of examples.
arXiv:2605.25986 · 2026-05-25

How to Get Quantum Communication from Nothingness

Physicists have shown that accelerating two sensors can extract quantum entanglement from the vacuum. If space is curled into a ring or two versions of it are superimposed, the connection strengthens. This reveals how the vacuum stores information and promises new quantum technologies.
arXiv:2605.26490 · 2026-05-26

Time Can Still Be Tricked

Physicists examined two classic time machine designs within extended gravity featuring an extra field. The time loops didn’t collapse, and the chronology protection hypothesis failed. Even souped-up gravity doesn’t forbid time travel, which matters for testing modified theories.
arXiv:2605.26696 · 2026-05-26

Record Haul: 161 Black Hole Mergers in Gravitational Waves

The updated GWTC-5.0 catalog includes 161 recent gravitational-wave bursts from black hole collisions. Thanks to improved detector sensitivity, some signals are now record-breakingly clear, allowing for more precise measurements of black hole masses and stricter tests of relativity. The total number
arXiv:2605.27225 · 2026-05-26

Light Delay Near Black Holes Will Uncover the Mystery of Dark Matter

Astrophysicists have shown: dark matter around a black hole barely distorts images of distant galaxies, but it alters the delay between the distorted images. For giant holes like M87*, the difference in light arrival time can be measured—a path to solving the dark matter puzzle.
arXiv:2605.27242 · 2026-05-26

Gravitational Waves Leave an Eternal Imprint

Traveling through the cosmos, gravitational waves don’t just shake it—they leave an irreversible shift, a microscopic deformation in the fabric of reality. This memory effect, predicted by Einstein, has so far eluded measurement. Astrophysicists used a special method of stacking data from many obser
arXiv:2605.27500 · 2026-05-26

Shadow of a Shaggy Beast: How Scalar Hair Shatters a Black Hole’s Image

The stronger the scalar field around a black hole, the more distorted its shadow. New simulations reveal that at extreme values, the shadow fractures into crescent-shaped shards.
arXiv:2605.28376 · 2026-05-27

Black Hole Whisper-Changes the Quantum Rhythm

Scientists have described gravity as a flow of quantum fluid. It turns out that a black hole alters a particle's 'rhythm' — akin to how a magnetic field influences an electron without it ever crossing it. This reveals that gravity affects quantum objects not just through force but with an invisible
arXiv:2605.28582 · 2026-05-27

Is dark matter the remnant of evaporated black holes?

Physicists suggest that invisible dark matter is the 'salt' left behind after primordial black holes evaporated. Calculations show that if there were too many such holes, their remnants would have overfilled the cosmos. But black holes weighing about a ton naturally account for the observed amount o
arXiv:2605.28953 · 2026-05-27

Dark Matter: Quantum Vortices Around Black Holes

A new study models dark matter as a superfluid near a black hole. Physicists found two types of stable structures: a dense core and a rotating vortex. It turns out the vortex is stable if dark matter particles attract each other weakly; strong attraction makes it collapse. This discovery suggests th
arXiv:2605.29069 · 2026-05-27

Dark Matter Sculpts Black Holes

In the early Universe, black holes sprang directly from clumps of dark matter. But collapse only kicked in where the matter formed broad, gently sloping hills, not sharp peaks. These primordial holes became the seeds of the giants at the centers of galaxies — allowing them to grow huge in a short ti
arXiv:2605.30145 · 2026-05-28

The Mystery of Disorder: Why Entropy Follows Strict Rules

The work reveals the fundamental laws of entropy: the ordinary kind (like in computers) and its rarer varieties. All of them obey two rules: the whole is never more chaotic than the sum of its parts, and adding a new element changes the system more if it’s already evenly mixed. This sheds light on t
arXiv:2605.30331 · 2026-05-28

Acoustic Black Holes Get Entangled Differently

Scientists modeled a flow where sound gets trapped and found that entanglement entropy grows with volume, not area. The reason: pairs of sound particles (phonons), born at the horizon, remain connected throughout the interior. This helps us understand how information might be preserved inside real b
arXiv:2605.30540 · 2026-05-28

How a Black Hole Amplifies Gravitational Waves

A cloud of matter can orbit a black hole, and the space between them works like a natural resonator. Weak external disturbances shake a hidden field in this gap, and its energy grows like an avalanche over time. Once amplified, the field emits a secondary gravitational wave — a delayed but powerful
arXiv:2606.00166 · 2026-05-29

Tunnels from Entropy: A New Key to Wormholes

Can modified entropy laws replace exotic matter for wormholes? Testing five non-standard models, physicists found each naturally generates matter with negative energy density—exactly what keeps spacetime tunnels open. This links entropic gravity theory to the prospect of interstellar travel.
arXiv:2606.00178 · 2026-05-29

Rotating Wormhole Without Exotic Matter

Scientists considered a theory of gravity where matter curves space more strongly. In this model, rotation prevents the wormhole from collapsing, eliminating the need for exotic matter. Since almost all cosmic bodies rotate, such tunnels could form naturally. They would be betrayed by a double shado
arXiv:2606.01141 · 2026-05-31

Phantom Glow: A Wormhole's Shadow Shines Brighter Than a Black Hole's

Scientists compared images of an Ellis-Bronnikov wormhole and a Schwarzschild black hole with accreting plasma. It turns out the central shadow and photon ring of the wormhole are noticeably brighter—light passes through the throat, adding from the far side of the disk. The result matches Event Hori
arXiv:2606.01699v1 · 2026-06-01

A Polygraph for Flashes: How the Pincus–Lyapunov Diagram Uncovers FRBs

To unravel the nature of fast radio bursts (FRBs), astrophysicists applied methods from nonlinear dynamics and constructed the Pincus–Lyapunov diagram, comparing them with pulsar glitches, solar flares, and earthquakes. It turned out: repeating FRBs form a compact cluster on the border between stoch
arXiv:2606.01855v1 · 2026-06-01

Quantum Tide from the Future: Accelerating the Universe Without Dark Energy

A new study offers a bold explanation: the accelerating expansion of the Universe isn't the result of mysterious dark energy, but a consequence of quantum boundary conditions imposed from the distant future. In a radiation-dominated model with zero cosmological constant, a final state in the form of
arXiv:2606.02514v1 · 2026-06-01

Cradle for a Black Hole: Dark Matter and the Mystery of Red Dots

Observations by the JWST have revealed a population of compact, anomalously red and bright sources in the early Universe — the so-called 'little red dots' (LRDs). Their nature remains a mystery: standard models of stars or active galactic nuclei cannot explain their spectra. One candidate is quasi-s
arXiv:2606.02539v1 · 2026-06-01

Fading Black Hole Flares: The Key Is the Star's Rapid Spin

Some repeating partial tidal disruption events show flares that fade from one to the next—a phenomenon that contradicted old models. Hydrodynamic simulations reveal that the culprit is the rapid initial prograde spin of a star captured via the Hills mechanism: the tidal torque is inefficient, and ma
arXiv:2606.02692v1 · 2026-06-01

Smoldering Ember in a Star’s Heart: Two Apocalypse Scenarios

These objects are one of the biggest mysteries and a possible key to dark matter. New modeling has revealed a rare but spectacular scenario with two outcomes for capture by a binary system. Without an accretion disk, the star fades unnoticed; with a disk, it is torn apart by relativistic jets in min
arXiv:2606.02700v1 · 2026-06-01

Ghost Wind of the Cosmic Dawn: How Lyman-alpha Destroys Stellar Cradles

The first two-dimensional radiation-hydrodynamic simulations prove that the radiation pressure in the Lyman-alpha (Lyα) line can exceed the direct stellar light force by up to 16 times and serve as the main feedback mechanism even before the explosion of supernovae in environments poor in dust. This
arXiv:2606.02711v1 · 2026-06-01

Graviton Fog: How Quanta Blur Light Cones

The classical light cone is a crystal-clear boundary between what can be causally connected and what remains forever separated. But quantum field theory in curved spacetime paints a different picture: gravitons, the quanta of the gravitational field, tremble even in vacuum, causing spacetime itself
arXiv:2606.02729v2 · 2026-06-01

Ruby Pupae: How Dark Matter Transforms the Face of Galaxies

The James Webb Space Telescope discovered a population of 'little red dots' (LRDs) — compact objects with disproportionately massive black holes that almost disappear at z<3. A study of 98 such sources showed that at z>4 they reside in sparse regions, but by z~3.5 their environment and dark halo mas
arXiv:2606.02773v1 · 2026-06-01

The Neutron Kitchen of the Big Bang: How Black Holes Tidied Up Lithium-7

The primordial lithium-7 problem is one of the main contradictions in standard cosmology: Big Bang nucleosynthesis theory predicts three times more lithium-7 than observed in old stars. An elegant solution proposes using neutrons from the evaporation of primordial black holes. Neutron capture turns
arXiv:2606.03316v2 · 2026-06-02

Roots from the Abyss: The Secret Growth of Supermassive Black Holes

Astronomers are increasingly finding giant black holes in the early universe, with masses reaching a billion suns. Ordinary gas accretion can't 'fatten' them up fast enough. A new hypothesis introduces an extra dimension: our brane-universe and an invisible donor brane intersect at a shared horizon.
arXiv:2606.03414v1 · 2026-06-02

Red Lanterns of the Cosmos: What Compact Objects from the Early Universe Conceal

Analysis of a hundred 'little red dots' (LRDs) with JWST has shown that their ultraviolet light is redder and more compact than that of ordinary galaxies. Spectral lines of carbon, helium, and hydrogen point to extreme conditions around a black hole, whose radiation seeps through a clumpy envelope.
arXiv:2606.03522v1 · 2026-06-02

Cosmic Detective: Two Independent Clues Against the Main Cosmological Debate

The Hubble constant — the expansion rate of the universe — has become a bone of contention: data from the cosmic microwave background and the distance ladder diverge by 6 sigma. Astrophysicists have proposed a new arbitration by cross-breeding 142 gravitational-wave events from the GWTC-4 catalog wi
arXiv:2606.03634v1 · 2026-06-02

Echoes of Black Holes: How Gravitational Sirens Reveal the Curvature of the Universe

Gravitational waves from mergers of black holes and neutron stars are not just ripples of curved spacetime but precise 'standard sirens' for measuring distances. A new study demonstrates that the Cosmic Explorer and Einstein Telescope detectors will be able to determine curvature Ω_k with an error o
arXiv:2606.04216v1 · 2026-06-02

Levitating Graphite Web Captures the Moon's Embrace

In Southampton, the thinnest graphite flake has been turned into an ultrasoft gravitational antenna. Levitating above magnets, it shifts by nanometers under tidal forces, and a laser interferometer converts this into a precise signal. The instrument distinguishes lunar and solar contributions, achie
arXiv:2606.14738v1 · 2026-06-02

Scarlet Invisible Cores: How Hydrogen Fog Conceals Black Holes

Scientists spectroscopically studied 14 'little red dots' (LRD) — compact objects at high redshifts. They decomposed the hydrogen Balmer series lines and found that the anomalously high Balmer decrement values are not due to dust absorption, but to extreme gas density (above 10⁹ cm⁻³). This led to a
arXiv:2606.04711v1 · 2026-06-03

Dance on the Razor's Edge: How the Star-Black Hole Balance Is Decided by Seven Percent

In tight binary systems, a star on an elongated orbit sheds mass—and this shedding either brakes the catastrophe or triggers a chain reaction of disruption. The key is the duel between two radii: the tidal radius and the Roche lobe. If the pericenter is below 3.45 tidal radii, adiabatic expansion in
arXiv:2606.04966v1 · 2026-06-03

The Cosmic Pearl String: How Galaxies Lost Their Dark Matter

Stretching around NGC 1052 is a chain of ultra-diffuse dwarfs — galaxies almost devoid of dark matter. According to the 'bullet dwarf' hypothesis, they were born from a head-on collision of gas clouds: dark matter slipped through, while the stars lined up in a row. Skeptics saw a projection illusion
arXiv:2606.05144v2 · 2026-06-03

Magnetic Forge: Plasma Pulsations Give Birth to Record Energies

In astrophysical plasma with high beta parameter — from planetary magnetospheres to accretion disks around black holes — particles with non-thermal energies are often detected. New kinetic simulations have shown for the first time: they are produced by magnetic pumping — rhythmic cycles of compressi
arXiv:2606.05286v1 · 2026-06-03

Winds of Cosmic Noon: How Quasar WISSH13 Halts Star Formation

At the peak of star formation, 12 billion years ago, quasar WISSH13 was ejecting two streams of matter at near-light speeds. Analysis of XMM-Newton and NuSTAR data revealed a cold corona and powerful reflection—a sure sign of accretion at the Eddington limit. These ultrafast winds, with kinetic powe
arXiv:2606.05312v1 · 2026-06-03

Quiet Quasar: Ultraviolet Storm at a Third of Light Speed

The quasar SDSS J2318, pretending to be a quiet one with weak emission lines, concealed inside a furious wind accelerated to 0.3 the speed of light. This outflow is capable of sweeping the interstellar medium out of its host galaxy, forever halting star birth. The discovery, made through spectroscop
arXiv:2606.06226v1 · 2026-06-04

Neutrino Lighthouse: The Hidden Heart of Supernova SN 2021foa

For the first time, a collapsing supernova is reliably linked to high-energy neutrinos. IceCube detected four neutrino events clustered in time and space near the peak brightness of SN 2021foa, a rare Type IIn supernova. The energy of the neutrino burst exceeded the optical by two orders of magnitud
arXiv:2606.06409v1 · 2026-06-04

Gravitational Phantoms: Domain Walls Instead of Black Holes

The recent short gravitational-wave transients GW190521 and GW231123 have caused puzzlement: their parameters — extreme masses and spins — challenge the standard black hole merger scenarios. Scientists tested an exotic hypothesis: perhaps these bursts are not generated by cosmic catastrophes, but by
arXiv:2606.06478v1 · 2026-06-04

Quasi-stars: The Furnaces Where Supermassive Black Holes Are Born

The James Webb Space Telescope has spotted mysterious "Little Red Dots" in the early universe—compact objects that don't fit standard models. A new study suggests they may be quasi-stars: black holes shrouded in a dense gas cocoon that thermalizes radiation like a giant furnace. Calculations using t
arXiv:2606.06575v1 · 2026-06-04

The Neutrino Chord: How a Supernova Will Unveil the Hidden Mass Order

The next galactic supernova is a rare gift to astrophysics, capable of answering a key particle physics question in a fraction of a second. Analysis of two independent signals—the sharp peak of electron neutrinos in the first milliseconds and the rise rate of the electron antineutrino flux—points to
arXiv:2606.06580v1 · 2026-06-04

The First Cry of a Merging Black Hole Confirms Hawking's Unbreakable Law

Scientists used a new method: measuring the horizon area from short-lived direct gravitational waves emerging right after the merger, before the quasi-normal ringing. Analysis of GW250114 showed agreement with the Kerr remnant area — a direct test of the area law. This opens an independent pathway t
arXiv:2606.06592v1 · 2026-06-04

Roots of the Cosmic Banyan: How Black Holes Feed

New data from the JWST telescope on galaxy NGC 4696 in the Centaurus cluster have for the first time traced the kinematic connection between large-scale filaments and a compact circumnuclear disk with a radius of about 120 parsecs. The S-shaped structure, familiar from Hubble images, turned out to b
arXiv:2606.06620v1 · 2026-06-04

The Rapids of a Black Hole: The Birth and Death of Blanets

In the turbulent disks of active galactic nuclei, blanets form—giant planets of incredible density. Drifting toward the central black hole, they are torn apart by tidal forces, generating brief but dazzling flares in optical and ultraviolet light. Their density allows them to approach the horizon of
arXiv:2606.06884v1 · 2026-06-05

The Cosmic Hump: How a New Spectrum Creates Massive Galaxies at the Dawn of Time

Observations by the James Webb Space Telescope have shown that in the early Universe, there are tens to hundreds of times more massive galaxies than standard cosmology allowed. A new model offers a paradoxically simple solution: a tiny 'hump'—a local enhancement—in the spectrum of primordial perturb
arXiv:2606.07357v1 · 2026-06-05

Dark Matter's Invisible Sparks: Tiny Black Holes as Stellar Detonators

What if dark matter isn’t just passive, but can actually ignite stars? New research simulates white dwarf explosions triggered by the passage of a primordial black hole—a candidate for dark matter. Hydrodynamic simulations and nucleosynthesis calculations of 495 isotopes show that such Type Ia super
arXiv:2606.07505v2 · 2026-06-05

The Color Key to the Ultraviolet Excess: Ghost Stars from Globular Clusters

The mystery of the ultraviolet 'hump' in the spectra of elliptical galaxies has found an unexpected solution: it's created not by natives, but by immigrant stars from destroyed globular clusters. Analysis of Hubble images in four filters revealed radial color gradients sensitive to helium and nitrog
arXiv:2606.07751v2 · 2026-06-05

Radio Telescopes Hear Gravitational Ripples

Radio telescopes CHIME and FAST can detect high-frequency gravitational waves that, passing through magnetic fields, turn into radio signals. This method enables the detection of mergers of microscopic black holes and even clouds of invisible particles around black holes, paving the way to solving t
arXiv:2606.09968 · 2026-06-08

Black Hole as a Gravitational Atom: Gravitational Echo

A spinning black hole accumulates a cloud of nearly weightless particles—a gravitational atom. A faint gravitational wave makes them synchronously "fall" from high orbits, creating a delayed burst. This flare is a key to detecting dark matter.
arXiv:2606.10776 · 2026-06-09

Twisted Solar Loop Reveals the Secret of Magnetic Explosions

A solar magnetic loop, twisted by 540 degrees, snapped at one end alone, spewing hot gas and hard X-rays. This proves that magnetic reconnection accelerates particles and heats the corona. Scientists found a pattern: the frequency of plasma pulsations directly indicates the strength of the magnetic
arXiv:2606.13953 · 2026-06-11

Gravity: Classical or Quantum?

Physicists have shown: if gravity is classical and matter is quantum, then a qubit solves problems beyond any computer. This would violate a fundamental limit on computation. Since we don't see that, gravity must be quantum.
arXiv:2606.14806 · 2026-06-11

Information — The Shadow of What Never Was

What is information? Not a substance, nor an empty abstraction. Rather, it’s the shadow of all the options that never came to be. When we erase data, the shadow vanishes, releasing a tiny amount of heat. In black holes, this shadow thickens but doesn’t disappear—a puzzle leading to quantum gravity.
arXiv:2606.15120 · 2026-06-13

There Is No Singularity in Black Holes

There is no point of infinite density at the center of a black hole—quantum effects cut off space at a finite radius, creating a 'quantum boundary.' No new physics is required.
arXiv:2606.15423 · 2026-06-13

Gravitational memory makes wormholes more stable

Physicists added gravitational memory to models of wormholes supported by the Casimir effect. Memory, like a wave's footprint, changes the energy distribution: the wormhole becomes sturdier and outwardly resembles a black hole. Its shadow matches measurements of M87*, pointing the way to discovering
arXiv:2606.15552 · 2026-06-14

The Law of Unified Cooling: What Links Blazars and Gamma-Ray Bursts

Blazars are long-lasting beams from black holes in galactic cores; gamma-ray bursts are short flashes from stellar explosions. Scientists have discovered that, despite their different timescales, their radiation is shaped by the rapid cooling of electrons in a weakening magnetic field. This explains
arXiv:2606.15759 · 2026-06-14

How a tiny satellite makes a black hole 'sing'

Researchers have shown: a tiny neighbor, through its tidal influence, rocks the almost eternal hum of a black hole. This resonance turns gravitational waves into a precise tool for measuring gravity at the very edge of the hole.
arXiv:2606.17883 · 2026-06-16

Vacuum’s Memory: How Information Survives in a Black Hole

A new hypothesis suggests the vacuum is a network of invisible threads. When a star collapses, the threads tangle into a dense knot—a fuzzball—whose surface imprints everything that fell in. Nature saves information from disappearing.
arXiv:2606.20334 · 2026-06-18

Gravity doesn't always hide the heart of a dying star

Imagine gravity as a stretched rubber sheet. A heavy star pushes it down into a deep funnel, which normally snaps shut, hiding the core. But new research shows: in some theories, the rubber is too bouncy, the funnel doesn't close, and light from the core seeps out.
arXiv:2606.20540 · 2026-06-18

Red Dots in the Early Universe Are Black Holes Viewed Edge-On

In the young universe, telescopes found many reddish dots. A new explanation: these are huge black holes that we see from the side. The gas disk around them blocks the most energetic radiation, allowing only dim red light and hydrogen glow. A similar object exists right in the Milky Way. If viewed f
arXiv:2606.21105 · 2026-06-19

Ghostly Neutrinos Illuminate the Milky Way's Bubbles

A powerful explosion once erupted at the center of our Galaxy, creating two searing-hot bubbles. Neutrinos — ghostly particles — arrived from their edges, proving that shock waves there accelerate matter to incredible energies. The discovery offers a glimpse into the black hole's turbulent past.
arXiv:2606.22387 · 2026-06-21

Magnetic fields of the early universe created black holes

Scientists described how magnetic fields in the early universe, like an invisible spoon, stirred spacetime, creating eddies that condensed into black holes. These holes could be a major component of dark matter.
arXiv:2606.23307 · 2026-06-22

When a Black Hole Can Split Apart

The laws of physics forbid black holes from dividing: their total area cannot decrease, just like entropy. But rapid rotation changes the rules, allowing tiny fragments to break off. In worlds with extra dimensions, fragmentation is even easier, revealing secrets of primordial black holes.
arXiv:2606.24642 · 2026-06-23

A Black Hole's Corona Blazes Like the Sun's

X-ray telescopes caught a double flare from the black hole in galaxy NGC 3783: first hard radiation, then soft. On the Sun, that pattern signals magnetic reconnection. The black hole also blasted out a stream of gas, akin to solar eruptions but billions of times stronger. For the first time, it's be
arXiv:2606.25636 · 2026-06-24

Neutrino Secret: The Invisible Express in a Black Hole's Jet

Nearly invisible neutrino particles come from black holes, but their source remained a mystery: the jets seemed too slow. New analysis revealed that inside the jet hides a super-fast core, racing at near-light speed. This core is the neutrino generator, and the radio signal arrives years later, like
arXiv:2606.27430 · 2026-06-25

Permanent Chaos: How Disorder Emerges in Static Quantum Systems

In frozen quantum objects like crystals, chaotic disorder has been discovered. Previously, it was only seen in systems continuously shaken by external forces. Scientists used a clever trick — a quantum clock mechanism — to 'awaken' chaos in stillness. This discovery links the microworld with black h
arXiv:2606.30635 · 2026-06-29

Fog Passes Off Tiny Black Holes as Giants

The Webb telescope spotted red dots that look like galactic cores with enormous black holes. But a fresh analysis suggests they might be modest-sized objects wrapped in a dense gas cocoon. Just as fog makes a lantern seem like a huge red ball, the gas distorts our estimates. Inside, there may not be
arXiv:2606.30711 · 2026-06-29

Testing Gravity's Quantum Nature with Spin

Scientists have calculated how a massive rotating sphere can make a passing particle be in two places at once—a hallmark of quantum gravity. The effect, predicted by Einstein, is like a spoon dragging through honey. A tabletop experiment using this frame-dragging will show for the first time that gr
arXiv:2606.31678 · 2026-06-30

15 Solar Masses: The Spin Frontier of Black Holes

Analysis of 259 gravitational-wave events revealed a sharp change in the effective spin χeff of binary black holes at around 15 M⊙. Below this threshold, spins tend to be positive and cluster in a narrow peak, while above it, the distribution broadens and becomes symmetric. It’s as if nature drew a
arXiv:2607.00565v1 · 2026-07-01

Dark Blizzard on the Edge of the Abyss: How Invisible Particles Ignite Stars

Star S4714 orbits the supermassive black hole at the center of the Milky Way on an extremely tight path, dipping into a hypothetical dark matter density spike. Scientists have shown that elastic scattering of dark matter particles off hydrogen nuclei and electrons can transfer energy to the star com
arXiv:2607.00840v2 · 2026-07-01

How Black Holes Actually Glow: A Simple Discovery

What's it about: they created an analog of a black hole's event horizon in an optical fiber — a point from which light cannot escape. What's new: Hawking radiation turned out to be not an avalanche, but a single burst. Why it matters: this could explain how real black holes lose mass.
arXiv:2607.01118 · 2026-07-01

The Smoking Gun of Hierarchy: Black Holes Betray Their Ancestors

Using a flexible mixed population model, scientists discovered a striking coincidence: the mass distribution of high-spin black holes exactly matches the distribution of remnant masses from the low-spin subpopulation. This ‘smoking gun’ proves that rapidly spinning black holes arose from hierarchica
arXiv:2607.01121v1 · 2026-07-01

Cosmic Metamorphosis: How Quasars Shed Their Dust Cocoons

A study of rare quasars with powerful outflows and anomalously weak emission lines has shown that these objects are in a transitional phase of 'blowing off' their dust cocoons. Using spectroscopy and polarimetry, outflow velocities of up to 0.16c were measured, and a predominance of tiny dust grains
arXiv:2607.01330v1 · 2026-07-01

The Conductor's Baton: How a Phase Transition Creates Axion Dark Matter

Lattice simulations showed that a first-order cosmic phase transition — like a sudden sweep of a conductor's baton — causes the axion field to switch on abruptly rather than smoothly. This gives rise to two regimes: a fast transition enhances the axion abundance due to delayed oscillations, while a
arXiv:2607.01333v1 · 2026-07-01

Cosmic Radio: How a Neural Network Catches the Whisper of Neutron Stars

The Aframe algorithm, previously honed on black hole mergers, now teases out signals from binary neutron star mergers from the noise of gravitational wave detectors in fractions of a second. Thanks to a trick from the radio engineer's toolbox—heterodyning—minute-long 'chirps' are compressed to just
arXiv:2607.01372v1 · 2026-07-01

The Cosmic Club with Face Control: The Mystery of Quasar Broad Lines Solved

Broad emission lines are the hallmark of active galactic nuclei, but they mysteriously weaken both at low and critically high accretion rates. A new study proposes a unified mechanism: the filtering of ionizing radiation by dense inner disk structures plays the decisive role. The effective flux reac
arXiv:2607.01479v1 · 2026-07-01

Cosmic Symphony: How the Bass and Whistle of Primordial Black Holes Sound in Unison

The formation of primordial black holes requires extreme amplification of primordial curvature perturbations, which generates two types of gravitational waves: a low-frequency background (SIGW) from the perturbations themselves and a high-frequency signal from the mergers of the resulting binary sys
arXiv:2607.01818v1 · 2026-07-02

Gravitational Atoms: When Boson Stars Break the Laws of Energy

Physicists investigated boson stars in teleparallel gravity, where a scalar field is non-minimally coupled to spacetime torsion. It turned out that excited states of these objects can have negative energy density, violating all four classical energy conditions. The compactness of these stars exceeds
arXiv:2607.02017v1 · 2026-07-02

Black Hole Cardiogram: NICER Records X-ray Heartbeat

In 2025, the NICER X-ray telescope aboard the ISS monitored the outburst of black hole 4U 1630−47, a binary system where matter from a companion star falls onto the compact object. Analysis revealed quasi-periodic oscillations (QPOs)—rhythmic flux variations with frequencies from 0.24 to 3.43 Hz—and
arXiv:2607.02228v1 · 2026-07-02

Dark Champagne: What Pulsars Revealed About the Phase Transition

Recently, pulsar timing array collaborations detected a stochastic background of nanohertz gravitational waves. Scientists investigated whether a first-order phase transition in the simplest dark sector — an Abelian Higgs model — could have produced it. Precision thermodynamic analysis using dimensi
arXiv:2607.02505v1 · 2026-07-02

How a Quantum “Pillow” Saves a Black Hole from Infinity

A new black hole model incorporates quantum corrections that remove the infinity at the center, turning it into a smooth region. This shifts the horizon, weakens Hawking evaporation, and changes the size of the shadow — the dark silhouette we can observe. By measuring the shadow, we can gauge the st
arXiv:2607.02631 · 2026-07-02

Neutrino Tomography of Earth: A New Look at the Planet's Interior

Earth's internal structure is traditionally studied using seismic methods and gravimetry. But neutrinos—particles that barely interact with matter—offer a fundamentally different, gentle probe. The IceCube collaboration analyzed 10.7 years of muon neutrino observations with energies from 500 GeV to
arXiv:2607.02644v2 · 2026-07-02

Corkscrew Galaxy: How a Twisted Jet Reveals the Magnetic Signature of Clusters

The spiral radio jet of the 'Corkscrew Galaxy' served as a natural magnetometer: astronomers compared its bends with Faraday rotation measure and proved that RM oscillations are synchronous with its morphology. In the eastern part of the jet, rotation is generated by its own magnetic field, while in
arXiv:2607.02665v1 · 2026-07-02

Cosmic Cocoons: MEOW's Infrared Hunt Reveals the Secret Growth of Black Holes

In a new study presented in the MEOW survey, astronomers used the MIRI infrared camera on the James Webb Space Telescope to search for dust-obscured active galactic nuclei from an era when the Universe was less than a billion years old. Analyzing the emission from hot dust allowed them to identify 1
arXiv:2607.02666v1 · 2026-07-02

When the Black Hole's Edge Doesn't Flinch

New research shows: if an imaginary light flow piercing spacetime converges on a spherical surface, the black hole's boundary remains unshakable. If the flow diverges, the horizon will shatter at the slightest disturbance. This rule will refine modeling of black hole mergers and decoding of gravitat
arXiv:2607.03128 · 2026-07-03

Black Holes Remember More Than You'd Think

Black holes store more information than the infalling matter provides. This excess 'information load' shifts the frequency of gravitational waves during mergers, revealing their origin—stellar or quantum.
arXiv:2607.03560 · 2026-07-03

Cosmic Jazz: Three Finales of an Encounter with a Black Hole

How does a primordial black hole, a dark matter candidate, alter the fate of a planetary system? Simulations of the TOI-2796 system revealed three dramatic outcomes: planet ejection, formation of a stable triple system, and capture of the planet into an eternal journey with the black hole. The rare
arXiv:2607.03724v1 · 2026-07-04

Dark Core or Pearlescent Layer: Metamorphoses of Neutron Stars

Scientists used an agnostic approach to study how dark matter affects neutron star structure. Light dark matter forms extended halos that boost tidal deformability, while heavy dark matter creates a dense core, making the star more compact. Constraints from NICER and GW170817 show that the fraction
arXiv:2607.03840v1 · 2026-07-04

Pendulum without heating: X-ray mystery of PSR J0901-4046

Observations by the Chandra space observatory set a record-low upper limit on X-ray luminosity for the periodic radio pulse source PSR J0901-4046. Its period—75.9 seconds—is too long for a classical pulsar: there isn't enough electric potential to pull particles out of the vacuum. It was thought tha
arXiv:2607.03848v1 · 2026-07-04

Fragrances of Cosmic Noon: How PAHs Survive the Hell of a Double Quasar

In the era of cosmic noon, 3 billion years after the Big Bang, two supermassive black holes are drawing close in galaxy J0749+2255. The MIRI infrared spectrograph on JWST captured emission from polycyclic aromatic hydrocarbons (PAHs) — organic molecules — not only in the cores but far beyond them. T
arXiv:2607.03913v1 · 2026-07-04

Triple Black Hole Waltz: How Chaos Spawns Mergers

Astrophysicists embedded the behavior of three massive black holes directly into hydrodynamic simulations of galaxies. It turned out that even a slight tilt of the third body's orbit turns billions of years of waiting into a rapid merger. The chaotic dance of three gravitational wells not only solve
arXiv:2607.04121v1 · 2026-07-05

Cosmic Drops: How Gravity Revealed Four New Cold Giants

Astronomers have reported the discovery of four cold giant planets around low-mass stars. They were betrayed by brief anomalies in the light curves — as if a water droplet on a windowpane momentarily focused distant light. All planets lie beyond the snow line, up to 6 astronomical units from their s
arXiv:2607.04594v1 · 2026-07-06

Cosmic Palimpsest: Gravitational Waves Reveal the Story of Ancestor Black Holes

Analysis of two recent events from the GWTC-5.0 catalog showed that, with a probability 6–8 times higher than alternative explanations, the primary black holes in these systems were born in previous collisions. A Bayesian comparison of hypotheses favored the “2G+1G” scenario—a merger of a descendant
arXiv:2607.04663v1 · 2026-07-06

Stellar Nurseries in the Jet's Shadow: JWST Explores Centaurus A

Centaurus A is the nearest radio galaxy to us, where an active supermassive black hole lives at its center, shooting out a powerful jet, while a warped dusty disk whirls around it. For a long time, it remained a mystery whether stars could be born under such extreme conditions. New observations with
arXiv:2607.04942v1 · 2026-07-06

The Ocean of Spacetime: The Hum of Black Holes and the Precision of Simulations

Recently, pulsar timing arrays have for the first time picked up the low-frequency hum of gravitational waves — a cosmic analog of the noise from distant storms in the ocean of spacetime. Comparing NANOGrav data with the Fable simulation showed that the predicted signal from supermassive black hole
arXiv:2607.05208v1 · 2026-07-06

Catching the Neutrino Wind: Why the Faintest Breeze in the Universe Demands the Impossible

The cosmic neutrino background is a ghostly echo of the Big Bang, billions of neutrinos permeating every cubic centimeter of space. Scientists have been hunting for its direct detection for years, but new work shows that measuring its anisotropy—the 'neutrino wind'—is a task orders of magnitude hard
arXiv:2607.05221v1 · 2026-07-06

The Pulse of a Black Hole: Birth of a Jet in X-ray Echo

Years of observations with XMM-Newton, Swift, and VLA showed how the changing-look active galaxy 1ES 1927+654 underwent a dramatic transition from a wind regime to a jet. X-ray spectra revealed oxygen emission lines and a broad iron line, while ionized absorption faded. Synchronously, radio emission
arXiv:2607.05246v1 · 2026-07-06

Symphony of Shadows: Neutrino Telescopes Catch the Whisper of Dark Matter

Using 13 years of data from the ANTARES telescope, scientists have set stringent limits on the interaction of dark matter with ordinary matter across mass scales from keV to GeV. Collisions of cosmic rays with dark matter particles in the Galactic Ridge produce neutrinos that are detected by deep-se
arXiv:2607.05335v1 · 2026-07-06

The Forge of Black Holes: Stellar Mergers as a Source of Spin

In dense globular clusters, frequent collisions of massive stars lead to the formation of rapidly rotating blue supergiants. Simulations show that when the mass ratio of the components exceeds 0.3, the merger product does not expand into a red supergiant and retains its angular momentum. The collaps
arXiv:2607.05495v1 · 2026-07-06

The Mystery of Fragile Satellites: Dark Matter Under Tidal Assault

Elena Asencio and her colleagues showed that, contrary to standard cosmology, the Milky Way’s classical satellites suffer strong tidal deformations. In MOND (modified Newtonian dynamics) these disruptions are natural, while cold dark matter predicts they should be almost completely shielded by massi
arXiv:2607.05502v1 · 2026-07-06

The Arrow Piercing the Disk: Recipe for an X-ray Flare

When a wandering star slams into the accretion disk of a supermassive black hole at immense speed, a quasi-periodic X-ray flare is born — a cosmic firework capable of outshining a galaxy. For the first time, 3D radiation hydrodynamics simulations systematically linked the collision parameters — star
arXiv:2607.05508v1 · 2026-07-06

Globular Clusters: A Palimpsest of Ancient Gas Clouds

For decades astronomers puzzled over mysterious anti-correlations of light elements in globular clusters. New research based on high-resolution cosmological simulations shows: the chemical anomalies could have arisen long before the birth of the cluster's first stars—in giant gas clouds. This scenar
arXiv:2607.05509v1 · 2026-07-06

The Safe at the Edge of the Universe

Using a simplified model, researchers determined the delay with which information emerges from behind the cosmological horizon. Quantum particles born near the horizon carry data not instantly: first, a characteristic time passes — roughly 1/8 of the horizon’s traversal period. This discovery helps
arXiv:2607.08737 · 2026-07-09