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Photometry is measuring the brightness of light. How the eye senses night is darker than day.

History

Astrophotometry dates back to Galileo's telescope. Modern CCD photometry developed in the late 20th century.

How it works

The telescope counts photons, like a bucket in the rain: how many drops fell in a minute.

💡 The most precise photometry notices a star dimming by as little as 0.01%.
Links in the knowledge graph 1
Scientists
William Borucki
Related tags
exomoonexoplanetspectroscopytransit methodwhite dwarfspectrometer
Laws
Stefan–Boltzmann law

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arXiv:2601.02665v1 · 2026-01-06

Dance of the Invisible Giants: Gaia Finds a 'Desert' of Brown Dwarfs

Astronomers are reimagining the map of nearby stellar pairs. The zone of tight orbits around Sun-like stars was once called the 'brown dwarf desert,' thought to hold few objects heavier than planets but lighter than stars. Fresh Gaia data reveal that many stars are dancing with unseen companions — a
arXiv:2601.03539v1 · 2026-01-07

A Trap for Invisible Axions: A Magnetic Detector

Physicists are hunting axions—light particles that might make up dark matter. They built a device with a levitating magnetized rod that should tremble if axions fly through it. In a new experiment, the rod stayed still, but the scientists set record constraints on how strongly axions interact with o
arXiv:2601.04576v1 · 2026-01-08

Smashing a moon slowed down the main asteroid

The DART probe's impact with moon Dimorphos caused the main asteroid to spin slower. Measurements showed that Didymos's day lengthened by 0.18 seconds, and the asteroid itself became more flattened. It's the first time a kinetic impactor has reshaped and respun a celestial body.
arXiv:2601.04793v1 · 2026-01-08

The Photonic Lathe: 100,000 Custom-Made Photons

Physicists have for the first time produced up to 100,000 photons in a precisely defined quantum state – hundreds of times more than before. Using virtual lenses, they correct distortions and reduce operation time as the number of particles increases. The method paves the way for ultra-sensitive sen
arXiv:2601.05118 · 2026-01-08

How One Supernova United Different Types of Explosions

Supernova PTF12dam changed its appearance right as it was brightening. This prompted astronomers to think: the entire diversity of superluminous supernovae could be explained by the temperature of the ejected material at peak brightness. It turned out that the slower the light rises, the weaker the
arXiv:2601.05363v1 · 2026-01-08

New Arid Meteor Shower: How a YouTube Camera Helped the Discovery

Hunting for a rare celestial phenomenon is like setting up a camera trap in a dense forest. In the fall of 2021, astronomers aimed a camera with high light sensitivity at the dome of the Subaru Telescope into the empty sky above Maunakea, trying to catch the predicted but elusive Arid meteor shower.
arXiv:2601.05412v1 · 2026-01-08

Lava Oceans of Exoplanets

A planet on a slightly egg-shaped orbit swings in close to its star, then pulls away. The changing gravitational tug heats its guts, melting rock into a lava ocean. Tidal waves stir it, spawning wandering hot spots. This makes the planet's glow flicker unpredictably—and sometimes the entire world tu
arXiv:2601.07080v2 · 2026-01-11

Space is Colder Than We Hoped

Scientists analyzed infrared data from the WISE telescope to detect possible Dyson spheres or other technologies that reprocess starlight. After excluding ordinary hot objects, they set an upper limit: only one in 6,500 galaxies could emit such excess heat. The probability of encountering an advance
arXiv:2601.07297v2 · 2026-01-12

Star Duet Spawns Ripples in Spacetime

A pair of white dwarfs whirls in a deadly dance: one star steals helium from its neighbor, spinning up a glowing disk. The orbit shrinks, energy leaves as gravitational waves. The rate of approach has been measured — the future LISA detector will catch the signal in four years.
arXiv:2601.07925v4 · 2026-01-12

Quantum computers save not just time, but also energy

Researchers compared the energy consumption of a photonic quantum chip and the best classical algorithms on the same task. The quantum approach becomes more energy-efficient long before achieving computational supremacy. This paves the way for reducing data center energy consumption.
arXiv:2601.08068 · 2026-01-12

The Mystery of Asteroid Kamo'oalewa: Why It's Not from the Moon

Astronomers have unraveled the origin of Kamo'oalewa. The lunar shard hypothesis hasn't held up: there are dozens of times more similar bodies from the asteroid belt. The Chinese Tianwen-2 mission will settle the matter.
arXiv:2601.08923v1 · 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

Cosmic Billiards: How Planets Become Wanderers

Gravitational kicks from distant giant planets knock small rocky worlds (super-Earths) near the star out of the system. The ejected planet becomes a lonely wanderer. This same mechanism can shuffle the orbits of the remaining planets and even send them plunging into the star.
arXiv:2601.09835v2 · 2026-01-14

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

Atom in a Mirror Trap: A Step Toward the Quantum Internet

Scientists assembled a node from a rubidium atom and a mirror-dish: it catches the atom's radiation and links it with light particles. Entanglement fidelity is 93%, and the simple design is ready for mass production. This module will become the foundation of quantum networks.
arXiv:2601.13420 · 2026-01-19

A Dimmer Reveals the Quantum Secrets of Light

A primitive light sensor can't tell what kind of light it sees, but physicists found a way: put a dimmer in front of it. By varying the dimming, the pattern of clicks reveals whether the light is quantum or classical.
arXiv:2601.13869 · 2026-01-20

How Squeezed Light Makes Microscopes Sharper

Light is sent through a microscopic waveguide, stripping away excess jitter. This squeezed beam outsmarts conventional precision limits. A new record — noise reduced by a factor of 35 — promises microscopes that can see cells without heating them.
arXiv:2601.15565 · 2026-01-22

Your Coffee’s Warmth Is a Silent Light Trade

Stable warmth is not stillness but a dynamic balance. Objects constantly emit and absorb light energy. A new calculation shows the average photon in this exchange carries 2.7 times the energy of molecular motion, linking your coffee to the sun’s fiery glow through a universal trade network.
arXiv:2601.22247 · 2026-01-29

Quantum Internet: From Theory to Reality

For the first time, single atoms were reliably linked over long optical fiber, and a secret code was extracted from their 'conversation'. Any eavesdropping attempt instantly destroys the pair — not a trick, but a property of the quantum world. This protection scheme turns any interception into a bla
arXiv:2602.09596 · 2026-02-10

The Birth of Quantum Light in a Semiconductor

By illuminating a semiconductor with a laser, physicists obtained light that behaves like a synchronized orchestra: its particles are squeezed and entangled. This discovery promises quantum microchips based on ordinary materials.
arXiv:2602.10882 · 2026-02-11

A Waterfall of Planets: The Mystery of the Vanishing Water Worlds

The model divides exoplanets into rocky and water worlds. Water worlds with steam atmospheres nicely account for the size gap, but at three Earth radii, their numbers plummet — like water over a cliff. This points to the inevitable capture of light gases by large planets.
arXiv:2602.11923 · 2026-02-12

How Atoms Themselves Create a Mosaic That Never Repeats

In a mixture of two types of atoms cooled into a joint wave state, quasicrystals form — structures with eight-fold symmetry. This requires equal proportions of components and strong mutual repulsion, not a pre-set 'irregular' lattice.
arXiv:2602.13129 · 2026-02-13

Synthetic Lattice for a Single Photon

A superconducting qubit and a fast modulator turned frequencies into floors for a single photon, letting it wander randomly, oscillate, or move only forward. This is a step toward compact quantum simulators.
arXiv:2602.13736 · 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

Sunlight Creates Quantum Entanglement

Physicists have discovered that ordinary sunlight is enough for quantum entanglement. By passing it through a crystal, they obtained pairs of 'twin particles' that instantly sense each other. Measurements confirmed that the link is on par with laser systems. This paves the way for cheap quantum tech
arXiv:2602.15655 · 2026-02-17

The Laser Where Atoms Listen to Each Other

A regular laser is a collection of soloist atoms. In the new laser, atoms form a choir: they hear each other and synchronize their emission. This gives birth to squeezed light with drastically reduced quantum noise, enabling measurements of unprecedented precision.
arXiv:2602.16215 · 2026-02-18

Hunting Dark Photons with a Mirror Telescope

Dark photons are light relatives of ordinary light, which could explain dark matter. A spherical mirror transformed them into radio waves, and 221 chilled sensors tried to catch that signal. In 1480 minutes, not a single photon was found, but it set a new limit on how strongly they interact with mat
arXiv:2602.18218 · 2026-02-20

Dyson Spheres Around White and Red Dwarfs: Calculating the Search

A Dyson sphere is a cosmic blanket that captures all of a star's energy. Scientists have figured out how such a blanket glows around white and red dwarfs: the bigger it is, the cooler it gets. Surprisingly, the hottest blanket comes from the dimmest star. These clues will aid telescopes in the hunt
arXiv:2602.23270 · 2026-02-26

When Atoms Decide to Sing in Chorus

An experiment with chilled lithium atoms shows they start emitting light synchronously only at a certain density. The superradiance threshold first drops, then rises, with the minimum coinciding with the condition when the distance between particles equals the light wavelength. This happens because
arXiv:2603.08691 · 2026-03-09

AI Assistant Masters Quantum Circuits

A chatbot-style AI now controls superconducting circuits, designing and executing measurements—including a famous quantum trick. This turns complex quantum hardware into a tool as easy as a smartphone, speeding up progress.
arXiv:2603.08801 · 2026-03-09

Cosmic Rhythm: From Snowdrifts to Quantum Gas

The bumps of a 'quantum snowdrift' made of cold atoms grow according to exactly the same scenario as a snowdrift in your yard. This universal law works for sand, water, and even cities. The experiment proved: nature is unified from atoms to skyscrapers.
arXiv:2603.09060 · 2026-03-10

Atomic String and Harmony of Frequencies

Interacting, cesium atoms began to oscillate synchronously, like a string. Under the influence of radio waves, the frequency changed, and with strong pumping, a spectrum of multiple overtones appeared — a frequency comb. This brings us closer to ultra-precise clocks and quantum simulators.
arXiv:2603.12170 · 2026-03-12

Quantum Particles Remember Their Past

Quantum systems usually quickly forget their initial state, but physicists found a way to slow this process. On an IBM processor, 144 qubits evolved for 5000 cycles, and entropy — a measure of disorder — grew so slowly it resembled a black hole evaporating in slow motion. This proves the ability to
arXiv:2603.12675 · 2026-03-13

The Evergreen Tree of Probabilities

Some believe unrealized quantum possibilities vanish instantly. Others think reality branches. A new experiment with three consecutive photon measurements has shown traces of persistent alternatives for the first time, supporting the many-worlds picture.
arXiv:2603.13974 · 2026-03-14

Double Signal: Quantum Noise Retreats

Quantum computers demand precise qubit readout. The new method creates two identical signals—original and echo—and combines them with a clever shift. The noise cancels out, and accuracy skyrockets. Even imperfect amplifiers handle the task, accelerating the arrival of powerful quantum machines.
arXiv:2603.15804 · 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

Astronomy Teaches Us to See the Invisible in the Brain

An astronomical method for finding supernovae helped reveal nearly invisible neural activity. The Astro-BEATS program subtracts the background from microscope videos, highlighting tiny flashes—they occur spontaneously and previously eluded researchers. This will accelerate the study of brain functio
arXiv:2603.22311 · 2026-03-19

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

How to Catch Microplastics with Twin Light

Twin light beams bypass pricey hardware: one probes the sample with invisible light, the other delivers the results in the visible spectrum. The device tells plastic types apart in a split second and fits in the palm of your hand.
arXiv:2603.22253 · 2026-03-23

How Sound Helped Find a Space Rock Over Alaska

A meteor missed by satellite cameras was reconstructed using sound and vibrations. A low-cost alternative for polar latitudes, where the never-setting sun blinds optics.
arXiv:2603.22630 · 2026-03-23

Faint Light Reveals the Shape of Invisible Dark Matter

The faint light diffused throughout galaxy clusters turns out to be a precise impression of dark matter. Stars ripped from galaxies fill its gravitational scaffold like plaster into a mold. This discovery gives astronomers a direct way to study the hidden structure of the Universe, without resorting
arXiv:2603.23158 · 2026-03-24

Stars Are Not Made from a Single Mold: The Gaia Discovery

The Gaia telescope studied stellar nurseries and discovered that the ratio of giant stars to dwarfs differs from one gas-and-dust cloud to another. It depends on the density and temperature of the ‘crib’, meaning there is no single cosmic recipe for star formation.
arXiv:2603.23594 · 2026-03-24

Mysterious Blue Flashes: What Their Host Galaxies Hide

Astronomers have found that mysterious blue flashes prefer dwarf galaxies but avoid regions of new star formation. This indicates their nature: a merger of a dead neutron star with a massive dying star — not an explosion, but a collision.
arXiv:2603.23597 · 2026-03-24

Why Purple Bacteria Always Have Big Rings

Light-harvesting rings in bacteria can’t have fewer than seven links—otherwise energy dissipates. Scientists modeled it and found that large rings work without losses. Nature knows how to build perfect batteries.
arXiv:2603.23743 · 2026-03-24

First Images from the New Cosmic Eye

The Vera C. Rubin telescope has released test images of a tiny patch of sky, packed with millions of galaxies and 93 new asteroids. These data will help fine-tune the equipment ahead of a full survey set to begin in 2026, turning the static sky into a movie.
arXiv:2603.23786 · 2026-03-24

Flexible Threads Turn Clothing into Radiation Detectors

Scientists have woven a radiation detector into an ordinary thread. Now any garment can signal invisible danger with blinking lights—like a colony of fireflies in a jar.
arXiv:2604.05061 · 2026-04-06

Loss Creates Order: The Quantum Dance of Photons

Physicists have shown that losses and noise in an optical chip do not destroy but rather establish quantum connections between photons from different sources. They connected two light sources through a murky channel and, instead of interference, got synchronous operation — like two pendulums on a sh
arXiv:2604.05422 · 2026-04-07

The Universe’s Brightest Flash Set the Tempo for the Alien Hunt

Like friends in a dark theater, signals from aliens can be synchronized to a common cosmic flash. Astronomers tested this method for the first time, using the most powerful gamma-ray burst GRB 221009A and the TESS satellite to observe 58 stars. Two suspicious flickers turned out to be interference,
arXiv:2604.06807 · 2026-04-08

Picture from Nothing: Silence Paints Ghosts

Usually, light is needed for a photo. In a new experiment, it was deliberately excluded. The image was assembled not from flashes, but from pauses of absolute darkness — like a drummer stays silent, and you deduce the drum’s shape from the missing beats. The method blurs the line between quantum and
arXiv:2604.07782 · 2026-04-09

Superradiant phase transition: the dance of electrons and light

Normally, electrons and photons cannot spontaneously organize. But if a thin layer of electrons is subjected to a pulsing magnetic field, they start to 'dance' in resonance with light inside a special cavity. A new phase emerges where particles and radiation merge into one, paving the way for lossle
arXiv:2604.08635 · 2026-04-09

Starlink and OneWeb Satellites: An Unexpected Swap in Brightness

Comparing 1.6 million brightness measurements over five years, astronomers noticed opposite trends: Starlink satellites with sun visors (VisorSat) became 0.6 magnitudes brighter, while OneWeb spacecraft became 0.4 dimmer. Both changes are statistically significant with an error probability below 0.3
arXiv:2604.13145 · 2026-04-14

Civilizations' energy growth isn't what we thought

Sixty years of data debunk a popular theory: energy consumption grows twice as fast as predicted, yet even that won't let humanity become a supercivilization. A new approach accounts for not just energy but also information processing, explaining why we still see no alien megastructures.
arXiv:2604.17516 · 2026-04-19

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

18 Years Later: A Supernova Lights Up the Radio

Scientists recorded radio emission from supernova SN 2007it, which flared in 2007. The signal arrived 18 years later: all that time, the shock wave was pushing through rarefied space until it hit a dense gas cloud. The discovery clarifies how massive stars lose mass before exploding.
arXiv:2604.20076 · 2026-04-22

Nuclear Clock on a Chip: A New Step Toward Precision

Physicists have developed a method to make thorium nuclei emit light signals with record stability. The key element is a crystalline cavity that amplifies light, greatly simplifying the excitation of nuclei with a laser. For the first time, a roadmap for creating all-solid-state nuclear clocks on a
arXiv:2604.20687 · 2026-04-22

The Quantum Twist Mystery: A New Detector Overturns the Rules

In the quantum world, crystals turn one photon into two entangled twins. It was long believed that their total twist was always conserved. But a new experiment shows a tiny beam shift inside the crystal breaks the rule. This finding will reshape quantum technologies.
arXiv:2604.23550 · 2026-04-26

Ocean of Currents: Why the Universe's Acceleration Varies with Direction

What if the cosmic ocean expands unevenly? Using 1701 supernovae from Pantheon+, astrophysicists checked this and found a disturbing ripple — a dipole anisotropy in q0. But once they accounted for galaxies' peculiar velocities, the illusion almost dissolved. It's an artifact of our own drift, not ex
arXiv:2605.03004v1 · 2026-05-04

Light Chip Plays Quantum Pinball

A compact glass chip with a maze of 128 waveguides makes photons bounce and mix like in quantum pinball. Heating controls their routes. The device solves the boson sampling puzzle—beyond ordinary computers—and outputs truly random numbers, the key to perfect encryption.
arXiv:2605.04162 · 2026-05-05

Quantum trick boosts microscope resolution by 5 times

The Fourier Plane Division (FDD) method splits light into several parts, measures them independently, and combines them with an algorithm. An experiment showed a fivefold increase in sharpness in microscopy. Unlike other methods, FDD needs no special illumination, making it applicable for astronomy
arXiv:2605.05961 · 2026-05-07

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

Cosmic Hydrogen Catches Gravitational Waves

Hydrogen in space acts as a network of natural antennas that pick up gravitational waves. By comparing the observed brightness of the glow with the theoretical value, scientists determine how much energy went into gravity. This makes it possible to create a gravitational map of the Universe.
arXiv:2605.11278v3 · 2026-05-11

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

Taming Light's Sideways Shift

Falling almost parallel to a surface, a light beam subtly slides along it for a few microns. Now this sliding can be controlled: by placing a cloud of rubidium atoms between a prism and metal, scientists use a second laser to change its transparency. As a result, the shift can be stretched, compress
arXiv:2605.20757 · 2026-05-20

How Motion Teaches a Detector to Distinguish Directions

A stationary detector is 'blind' to light direction. But once it starts moving uniformly, the Doppler effect shifts the frequency of oncoming and receding photons. If the detector is color-selective, it begins to favor one direction. This quantum property paves the way for simple orientation sensors
arXiv:2605.21206 · 2026-05-20

Laser Detector in Two Places: How to Hear a Quantum Field

Scientists have designed an experiment where a laser beam simultaneously passes through two clouds of ultracold atoms, mimicking a detector that is in two places at once. After the beams reunite, the difference in their signals is measured — it will reveal how the quantum field responds to a split r
arXiv:2605.21595 · 2026-05-20

How to Create the Perfect Single Photon

For quantum technologies like precise photometry (measuring light) and spectroscopy (analyzing matter with light), sources of single photons—light particles emitted strictly one at a time—are needed. Previously, one had to choose between purity (one photon without a pair) and brightness (flux per se
arXiv:2605.21942 · 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

Cosmic sieve: Gaia sifts through billions of celestial bodies

Astronomers passed billions of objects through a computer 'sieve'. The most distant ones slipped through, but the infrared telescope CatWISE2020 caught them, increasing the haul of distant galaxies and quasars by tens of percent — albeit with a small fraction of false positives.
arXiv:2605.23388 · 2026-05-22

Time Crystals: Eternal Ticking Clocks Made of Atoms

Time crystals are a state of matter that pulses without external pushes, like a perfect clockwork mechanism. Physicists obtained three varieties of such 'ticking' in a cloud of atoms placed between mirrors. The light emerging from the trap allowed them to see these oscillations directly and distingu
arXiv:2605.23881 · 2026-05-22

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

Light under Control: One-Way Photons Without Magnets

Light can be made to flow in one direction without magnets — just spin a ring resonator and use two amplifier atoms. A tiny frequency shift from rotation, like the change in a siren's pitch, after quantum wave interference creates a strong asymmetry: single photons emerge in one direction, bunched-u
arXiv:2605.27447 · 2026-05-24

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

Light Working in a Team Measures Distances More Accurately

Scientists have proposed a method that makes several light sources blink synchronously. This amplifies the signal and reduces measurement error. Instead of simply measuring brightness, the consistency of light bursts is analyzed. The technology will be useful for sensors in autonomous vehicles and p
arXiv:2605.28378 · 2026-05-27

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

Light Leaks into Darkness: How Photons Become Dark Matter

Two key methods for measuring the expansion rate of the Universe — the cosmic microwave background and supernovae — yield values differing by 5 sigma. A hybrid model adds to the cosmological redshift a contribution from quantum conversion of photons into hidden mass. Analysis of the Pantheon+SH0ES c
arXiv:2606.02097v1 · 2026-06-01

The Kilometer Barrier: Why Tidal Disruption of Asteroids Leaves Only Boulders

When a white dwarf tears apart a passing asteroid, we expect a dust cloud. But new analysis flips the picture: particle cohesion — those very van der Waals forces that hold sand grains in your palm — erects a kilometer barrier. Fragments smaller than hundreds of meters simply cannot be born during t
arXiv:2606.02457v1 · 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

The Mystery of 'Impossible' Galaxies: How Outer Color Maps Are Rescuing Cosmology

Using NIRCam on JWST, astronomers studied four supermassive quiescent galaxies whose light has been traveling to us for over 11 billion years. It turns out that in three of them, the color shifts smoothly from center to outskirts: red old cores surrounded by bluer, younger regions. This color map re
arXiv:2606.02698v1 · 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

Stellar Orthography: How ExoVeil Reads Missed Planets

Traditionally, astronomers caught planets by waiting for multiple passes across stars. ExoVeil breaks this mold: a transformer neural network learns to predict the star's normal twinkling and spots even a lone shadow. A blind analysis of Kepler data revealed 179 new candidates, and on TESS data with
arXiv:2606.02778v3 · 2026-06-01

Neptune's False Note: Nereid — Not an Interloper, but a Last Survivor

Neptune's third-largest moon, Nereid, was long counted among the icy intruders from the Kuiper Belt. But its unique infrared spectrum, captured by the James Webb Space Telescope, is unlike any other: crystalline water ice with a reddish tint and traces of carbon dioxide hint at a birth near the plan
arXiv:2606.02818v1 · 2026-06-01

Light Poses as a Fermion During Acceleration

If an electric charge moves along a cleverly designed curve, its radiation starts behaving strangely: photons occupy strictly separate energy levels, as if passing through a turnstile. This effect blurs the line between bosons and fermions and opens up new possibilities for quantum technologies.
arXiv:2606.02824 · 2026-06-01

Game or simulation: what’s the best way to learn the photoelectric effect?

The game 'Photon Jump' is like a cooking experiment, while the simulation is a tried-and-true recipe. Together they make the quantum effect understandable even to those far from gaming.
arXiv:2606.03622 · 2026-06-02

Quiet Quark Waltz: New Data Tighten Bounds on Color Superconductivity

Weaving together NICER, LIGO, and heavy pulsar observations with neural networks and quantum chromodynamics equations, scientists have for the first time imposed a tight constraint on the color-flavor locking parameter (ΔCFL < 66 MeV) — half as wide as previous model estimates. It turns out that col
arXiv:2606.03707v2 · 2026-06-02

Quantum Eraser Captures Two Pictures in One Snap

This research turns a famous quantum puzzle – the delayed-choice eraser – into a practical imaging method. It uses entangled photon pairs to record both brightness and phase information in one snapshot. Later, analyzing a partner photon determines which image is revealed. The technique ensures perfe
arXiv:2606.03914 · 2026-06-02

Dance of Photons: When the Solar Sail Becomes Its Own Brake

What happens to a solar sail at near-light speeds? An analysis of three components of light pressure — incident, specular, and diffuse — revealed a critical threshold. The relativistic Doppler effect weakens the mirror-like thrust, and after v=0.75c, diffuse scattering reverses sign and decelerates
arXiv:2606.04052v1 · 2026-06-02

Cosmic Waltz: How a White Dwarf Became a Radio Beacon

The system ASKAP J1745−5051 is a close binary where a magnetic white dwarf strips material from a red dwarf every 1.37 hours. The resulting radio bursts are so powerful that their brightness temperature exceeds 10^12 K, requiring a coherent emission mechanism — a cosmic analog of a laser. Spectrosco
arXiv:2606.04232v1 · 2026-06-02

Interstellar Wanderer with a Polar Orbit

Analysis of the fireball that blazed on April 1, 2026 over the South Atlantic showed its heliocentric velocity was 51.73 km/s. That's 9.59 km/s above the threshold at which an object forever leaves the Solar System. Scientists accounted for gravitational acceleration, recalculated coordinates, and r
arXiv:2606.04379v1 · 2026-06-03

Gaia Sausage — A Palimpsest: Four Ancient Mergers that Rewrote the Galaxy's Heart

Like a restorer examining an ancient manuscript under different lights, astronomers used DESI spectroscopy and the GS3 Hunter algorithm to peer beneath the surface of the Gaia Sausage. They found not a monolith, but a palimpsest: four substructures aged 7 to 12 billion years, differing in chemical c
arXiv:2606.04462v1 · 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

Shattered Inkwell: Impact Downpour 800 Million Years Ago

About 800 million years ago, in the main asteroid belt, the parent body of the Eulalia family — a giant chunk of primitive carbonaceous chondrites — broke apart. Nearly three-quarters of the fragments, caught by Jupiter's gravitational resonance, rushed into the inner Solar System, causing a true im
arXiv:2606.05036v1 · 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

A Cosmic Sketch Without Smudges: JWST Confirms Cold Dark Matter

The JWST peered into the hearts of gravitational lenses — and found not a single smudge expected from lightweight dark matter particles. New data shut down many warm dark matter models and bolster the standard cold scenario. Limits on the half-mode mass and thermal relic mass are among the tightest
arXiv:2606.05277v1 · 2026-06-03

Tiny Sparks That Ignited the Universe

A natural gravitational lens—the Abell 2744 cluster—boosted JWST's ultra-deep observations and allowed the selection of a population of compact galaxies with an equivalent width of [OIII]+Hβ >740 Å. NIRSpec spectroscopy confirmed: their metallicity is 10–100 times lower than solar, dust is almost ab
arXiv:2606.05323v1 · 2026-06-03

Speed Filter of the Skies: How Swift Visitors Elude Telescopes

Since 2017, only three interstellar bodies have been discovered — Oumuamua, Borisov, and ATLAS. New research reveals: rapid sky motion renders most such objects invisible. Analytical models and simulations show that faint visitors streak by faster than survey cameras can capture. This explains the p
arXiv:2606.05344v1 · 2026-06-03

Ultraviolet Trap: How TRAPPIST-1 Star Fakes Signs of Life

TRAPPIST-1 e is a rocky planet in the habitable zone of a red dwarf, one of astrobiologists' prime targets. But decoding its atmosphere requires a precise ultraviolet 'autograph' of the star. Simulations showed: different UV spectra dramatically alter the chemical portrait, producing deceptive pairs
arXiv:2606.05451v1 · 2026-06-03

Magnetic Thermos of Stars: Birth of a Micronova

In the tight binary system IGR J17014-4306, astronomers recorded an optical flare of a micronova — a localized thermonuclear explosion on a white dwarf. Over 1.56 days, it released 3.25×10³⁸ erg of energy, equivalent to burning a hydrogen column the mass of a small asteroid. This brought the rare cl
arXiv:2606.06305v1 · 2026-06-04

Quantum sieve catches one-in-a-million glitches

Predicting rare disasters—market crashes, AI glitches—is nearly impossible. Classical computers demand oceans of data or predefined checklists. A new quantum algorithm flips this: it uses the blurry nature of qubits to amplify the faintest warning signs, offering a safety net for banks, power grids,
arXiv:2606.06316 · 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

The Flare's Fiery Heart: Ions Race Along Magnetic Lines

Solar flares crank temperatures up to millions of degrees, but iron ions move much faster along magnetic lines than across them. An international team, analyzing nearly 4,600 spectra from the Japanese Hinode satellite, proved for the first time that line broadening is driven not by turbulence but by
arXiv:2606.06577v1 · 2026-06-04

The Dusty Truth: Why Supernovae Finally Spoke with One Voice

An international team led by Marco Giunto analyzed nearly a thousand Type Ia supernovae from the ZTF survey and showed that the differences in their color and brightness are almost entirely caused by dust in their host galaxies, not by the physics of the explosions themselves. This settles a long-st
arXiv:2606.06593v1 · 2026-06-04

Cosmic Prospector: Sifting Stars in Search of Life

Where to look for intelligent brothers? A new parametric filter of seven criteria rejects stars unable to support complex life. From Gaia DR3's 1.74 million stars, it eliminated 55.4%, retaining 777,835 priority targets — mostly G and K dwarfs. Key rejection factors: low metallicity and youth. Notab
arXiv:2606.06692v2 · 2026-06-04

PeVatron's Hybrid Orchestra: A Particle Symphony at the Edge

Astrophysicists have built a self-consistent model of the source LHAASO J1849-0002, associated with the pulsar PSR J1849-0001. In the hybrid scenario, relativistic electrons from the pulsar wind nebula scatter the cosmic microwave background, while protons collide with a nearby molecular cloud, prod
arXiv:2606.06974v1 · 2026-06-05

Freo Doctor: How Wind Governs the Fate of Meteorites

The bright flash of a bolide is just the first act. After an asteroid or comet fades, dark flight begins: the invisible drift of fragments to the ground. That's when wind sows chaos, shifting the impact point by hundreds of meters. The team of Devillepoix and Cupák deployed the WRF model to calculat
arXiv:2606.07144v1 · 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

The Cosmic Forge: Why GJ 3929 b Lost Its Air

Ultra-precise photometry of four secondary eclipses of the planet in the red dwarf system GJ 3929 yielded a depth of 118±22 ppm, corresponding to a dayside temperature of about 640 K. Modeling showed that a dense carbon dioxide envelope like Venus's cannot be held, though traces of gases might remai
arXiv:2606.07511v1 · 2026-06-05

Cosmic Latte: Why X-rays Are Three Times Brighter Than Hydrogen

Why does the ratio of X-ray brightness to H-alpha line emission in diverse systems—from galactic winds to jellyfish—stubbornly hover around three? Astonishingly, H-alpha arises from cold gas (10,000 K), while X-rays come from plasma heated to millions of degrees. Three-dimensional simulations have c
arXiv:2606.07741v1 · 2026-06-05

A Lens in the Depths: Why the Axion Limit Isn't Afraid of Exotics

Neutron stars are ultra-dense laboratories where matter is compressed to its limit, and hypothetical axions can reveal themselves through accelerated cooling. Even the addition of exotic baryons in the core hardly shifts the tight constraint on the axion mass; in some models, the limit brushes again
arXiv:2606.07742v1 · 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

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

The Mystery of Eclipse Shadow Bands Solved

Shadows resembling ripples from a tossed pebble arise from light's wave nature. The edges of the solar crescent act as two sources, creating interference. This discovery lets us measure air turbulence from the bands.
arXiv:2606.28366 · 2026-06-14

Single Photons in High Harmonics

Scientists have theoretically proven that in extreme ultraviolet light from a laser, photons are born strictly one at a time. This discovery promises simple sources of single light particles for quantum communication and super-microscopy.
arXiv:2606.17620 · 2026-06-16

Young Stars: Gamma Rays from Jets

It turns out young stars don't just warm their cradles but also emit gamma rays. This happens when their jets, like from a hose, slam into clouds of gas and dust. Now we can peer through the dust into the hidden processes of planet birth.
arXiv:2606.19445 · 2026-06-17

Tiny Crystal Measures Temperature and Magnetic Field Simultaneously

Scientists built a sensor from boron nitride — a transparent cousin of graphite. It contains a glowing speck whose hue shifts with heat and flicker rate changes with magnetism. So one miniature device replaces both thermometer and magnetometer, with no cross-talk. The technology will find use in mic
arXiv:2606.19978 · 2026-06-18

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

Cosmic Collisions: How to Witness the Birth of Planets

When two would-be planets around other stars collide, the impact strikes a blinding spark. The glow slowly fades over weeks to years. New sky surveys will capture these events, unveiling the secret of world birth.
arXiv:2606.26026 · 2026-06-24

Entanglement That Can't Be Broken: Photons in Invulnerable Quantum Communication

A quantum entanglement has been created that doesn't depend on the observation method: the link between photons stays strong no matter how you split the light. This was achieved thanks to an ingenious optical setup and precise measurements. The result paves the way for ultra-reliable quantum network
arXiv:2606.30468 · 2026-06-29

The Chameleon Star: Where Did Theta Eridani's Brightness Go?

Astronomers discovered that the Theta Eridani system contains three stars, with two inner ones locked in a tight dance. One star ran out of hydrogen fuel, swelled up, and wrapped its companion in a gaseous blanket. Friction inside this cloud triggered a bright flash that lasted for centuries. The fi
arXiv:2606.30748 · 2026-06-29

Thorium-229: The Atomic Quantum Battery

Scientists turned a thorium atom into a quantum battery: the electron shell and nucleus swap energy like two pendulums on a shared string. A laser charges the shell, and the energy slips into the nucleus on its own. No wires—just light and the atom.
arXiv:2607.00607 · 2026-07-01

A Diamond Defect Steered by Light Remembers a Quantum Secret

Scientists turned a tiny defect in diamond—a nickel atom with missing neighbors—into an all-optical qubit. It's controlled by a laser, emits in the infrared, and holds a quantum state 3400 times longer than usual, running in a standard fridge.
arXiv:2607.02258 · 2026-07-02

Light Trap for Nanoparticles

Special surfaces, optimized by computer algorithms, capture and hold the tiniest particles with the force of light. This technology is essential for ultrasensitive sensors, precise assembly of microdevices, and even manipulation of individual atoms in quantum systems.
arXiv:2607.02352 · 2026-07-02

Two Quantum Sensors Peek Inside a Living Cell

The new microscope controls two magnetic sensors inside a living cell: one made of protein, the other of diamond. They detect weak magnetic fields, and working together they create a stereo effect—like two ears. This will help decipher how cells communicate and lay the foundation for ultra-precise m
arXiv:2607.03552 · 2026-07-03

An Ultrafast Look at Light’s Quantum Quiver

Light constantly trembles due to quantum effects, but measuring this tremor in bright beams was impossible. Physicists used flashes shorter than the ripples themselves and reconstructed their pattern for the first time. This will simplify the creation of precise quantum devices.
arXiv:2607.06395 · 2026-07-07

Cosmic Tuning Fork: KLT-Net Neural Network Rewrites the Distance Ladder

Using 1701 Type Ia supernovae, the KLT-Net neural network reconstructs distance modulus for the first time without relying on cosmological models. The harmony of three architectures—KAN, LSTM, and Transformer—captures both local nuances and the global rhythm of expansion. The result: Hubble constant
arXiv:2607.06959 · 2026-07-08

Classical Gravity Distorts Quantum Snapshots

Scientists have proposed a way to test the nature of gravity by observing the oscillations of microscopic mirrors. If gravity is classical, the reconstructed quantum picture violates fundamental constraints—opening a path to lab tests.
arXiv:2607.06967 · 2026-07-08

Cosmic Flash: Why Advanced Civilizations Vanish from the Ether

A model based on exponential technological growth shows: the faster a civilization develops, the shorter the period during which it emits technosignatures we can detect. At rates comparable to Earth's after the emergence of AI, this window could be less than twenty years. Traditional narrowband sear
arXiv:2607.07413 · 2026-07-08

Quantum Engine Combines Power with Ideal Efficiency

Ordinary heat engines can't be both powerful and maximally efficient: upping power increases losses. New research describes a quantum engine on a superconducting chip, where many quantum systems synchronize like fireflies in a forest, bypassing the classic trade-off. This paves the way to energy-sav
arXiv:2607.08713 · 2026-07-09