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AstroPhysics & Cosmology
A peculiar object dubbed an 'X-ray dot' could help solve the mystery of the 'little red dots' discovered by the James Webb Space Telescope.
The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system, astronomers reported Thursday.
Astronomers using the James Webb Space Telescope have made a surprising discovery about a galaxy long, long ago and far, far away: It isn't rotating. That's something only seen in the most massive, mature galaxies that are closer to us in space and time, said Ben Forrest, a research scientist in the Department of Physics and Astronomy at the University of California, Davis, and first author on the paper published May 4 in Nature Astronomy.
For the first time, scientists have measured the instantaneous mind-blowing power of jets blasting from a black hole.
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Powerful bright blue cosmic explosions called Luminous Fast Blue Optical Transients could be caused when a black hole or neutron star slams into the universe's hottest class of star.
A spiral galaxy's brilliant heart outshines everything within sight in a new picture from NASA's Webb Space Telescope.
Black holes evaporate through Hawking radiation, meaning their days are numbered. But a new study finds they could enter a metastable stage where they look similar to white holes.
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A link between particle physics and gravity equations, called the double copy, applies to Hawking radiation, creating a new way into black hole puzzles.
Scientists may have uncovered a surprising secret behind why life exists at all. A new study suggests that the Universe’s fundamental constants — the deep physical rules that govern everything from atoms to stars — appear to sit within an incredibly narrow “sweet spot” that allows liquids to flow properly inside living cells. Even tiny shifts in these constants could make blood too thick, water too sticky, or cellular motion impossible, potentially wiping out life as we know it.
The Universe’s biggest black holes may not be born giants after all. Scientists analyzing gravitational-wave signals from dozens of black hole collisions found evidence that the heaviest black holes are likely “cosmic recyclers” — formed through repeated smashups inside incredibly crowded star clusters. These violent chain reactions appear to create a distinct class of rapidly spinning black holes that stand apart from ordinary ones formed by dying stars.
A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have formed in a place far colder and stranger than anything around our Sun. The interstellar visitor, called 3I/ATLAS, contains an astonishingly high amount of “heavy water,” far exceeding anything seen in our own solar system.
Miss Universe Philippines CEO Jonas Gaffud faces criticism after a viral video shows him swinging a phone during a live event. The organisation denies any harm, attributing the incident to technical issues.
Astronomers using the James Webb Space Telescope have spotted something that shouldn’t exist—at least not so early in the universe. A massive galaxy, formed less than 2 billion years after the Big Bang, appears to have no rotation at all, a trait usually seen only in much older, evolved galaxies. This challenges current theories that young galaxies should still be spinning from their formation.
This one telescope is enabling us to deduce not just the chemical and mineral compositions of distant worlds, but their terrain and features as well.
A team of researchers used the NASA/ESA/CSA James Webb Space Telescope together with the NASA/ESA Hubble Space Telescope to observe almost 9,000 star clusters in four nearby galaxies. They studied younger clusters that were still embedded in their natal gas clouds, and older ones that had dissipated that gas. Their results show that more massive star clusters emerge more quickly from their birth, clearing away gas and filling the galaxy with ultraviolet light. The research presents a better understanding of star formation in galaxies, something lacking in scientific simulations, as well as how and where planets can form.
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Merging black holes and neutron stars have unusual oval orbits prior to colliding and merging, which challenge the laws of physics.
Theories of quantum mechanics predict that some particles can exist in superpositions, which essentially means that they can be in more than one state at once. When a particle's state is measured, however, this superposition appears to "collapse" into a single outcome; a phenomenon often referred to as the "measurement problem."
The most massive black holes in the universe detected by the ripples they make in spacetime were not born directly from collapsing stars, according to a new study. These cosmic giants instead build up through a series of repeated and extremely violent collision events in very densely populated star clusters, an international team of researchers argue.
Astronomers have long known that neutron stars, the crushed cores left behind after massive stars explode, should be scattered throughout the Milky Way galaxy. However, most of them are effectively invisible. A new study published in Astronomy & Astrophysics suggests that NASA's upcoming Nancy Grace Roman Space Telescope could spot them anyway.
New Curtin University-led research has used a radio telescope that spans the Earth to snap images that measure the immense power of jets from black holes, confirming scientists’ theories of how black holes help shape the structure of the Universe.
Supermassive black holes lurk at the centers of massive galaxies, including our own Milky Way. Puzzlingly, supermassive black holes more than a billion times the mass of the sun appear to exist just a few hundred million years after the Big Bang, when the universe was less than 5% of its current age. As interstellar gas spirals towards such black holes, it accelerates to extreme speeds, heats up, and emits intense radiation across the electromagnetic spectrum, creating a "quasar."
An international team led by researchers at the Institute of Cosmos Sciences of the University of Barcelona (ICCUB) has developed a new method that could significantly improve our understanding of the expansion of the universe and the nature of dark energy.
Extremely bright satellites and megaconstellations could make the night sky up to three times brighter than it is now, a new study warns. This would seriously hinder astronomical imaging devices, like the enormous camera at the Vera C. Rubin Observatory.
A new recipe of dark matter that interacts with itself could be the solution to three separate and vastly different cosmic puzzles.
Astronomers using the NASA/ESA/CSA James Webb Space Telescope together with the NASA/ESA Hubble Space Telescope have looked deeply at thousands of young star clusters in four nearby galaxies, studying clusters at different stages of evolution. Their findings show that more massive star clusters emerge more quickly from the clouds they are born in, clearing away gas and filling the galaxy with ultraviolet light. The result gives us a better understanding of star formation in galaxies, as well as how and where planets can form.
Models giving dark matter more complex behavior could help solve multiple cosmic mysteries
The FLAMINGO project helps scientists explore how galaxies, dark matter and cosmic structures evolved over billions of years.
An international team of researchers has measured the power of jets of particles blasted into space by black
A scorching, airless world just 48 light-years away is offering scientists a rare glimpse into the geology of distant planets. Using the James Webb Space Telescope, researchers studied LHS 3844 b—a tidally locked “super-Earth” with a permanent dayside hot enough to melt metal—and discovered it’s a dark, barren rock with no atmosphere.
An international team of astronomers has analyzed the data from the James Webb Space Telescope (JWST) and Atacama Large Millimeter/submillimeter Array (ALMA) to investigate giant molecular clouds in nearby galaxies. The new study, presented April 27 on the arXiv preprint server, unveils crucial information regarding the lifetime of more than 100,000 such clouds across 66 galaxies.
Across the Milky Way galaxy, a planetary odd couple is circling a star some 190 light years from Earth. A normally "lonely" hot Jupiter is sharing space with a mini-Neptune, in a rare and unlikely pairing that's had astronomers puzzled since the system's discovery in 2020.
Known for their speed, the Eta Aquarids will reach their peak on Tuesday night into Wednesday morning.
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One of the best-performing models in cosmology is also one with the least physical rationale behind it. Columnist Leah Crane says this leaves us with a puzzle that could make or break physics as we know it
The mysterious link between CIA-linked researcher Andrija Puharich and 'The Nine', alleged alien or supernatural beings, is renewing paranormal research and conspiracy theories.
Channing Tatum's cryptic social media posts have sparked speculation about his emotional state, coinciding with news of Zoë Kravitz's engagement to Harry Styles, fueling widespread online discussion.
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Astronomers using the James Webb Space Telescope have directly analyzed the surface of a distant super-Earth, revealing a dark, airless, Mercury-like world.
Using various telescopes, an international team of astronomers has performed multi-wavelength observations of a recently identified gamma-ray burst source designated GRB 250416C. Results of the observational campaign, published April 23 on the v pre-print server, could help us better understand the nature of GRB 250416C and gamma-ray bursts in general.
Learn more about exoplanet LHS 3844 b, a rocky "Super-Earth" that's about 30 percent larger than our planet and could have a surface comparable to our moon or Mercury.
An update to an experiment run by Henry Cavendish in 1773 could be a cheaper and faster way to spot a potential dark matter particle – and may be 10,000 times more sensitive
The Vela Supercluster, in our Milky Way's Zone of Avoidance, is competing gravitationally with other superclusters for the attention of local galaxies.
Astronomers recently carried out a comprehensive search for strange "winged" radio galaxies using data from the LOFAR Two-meter Sky Survey Data Release 2 (LoTSS DR2) and discovered over 1,000 new systems. The paper outlining these results was submitted to the arXiv preprint server on April 24, 2026.
Looking like a scene out of "Star Wars," this image shows the ESO's Very Large Telescope Interferometer (VLTI) beaming four separate lasers into the sky towards the Tarantula Nebula.
Cell walls are a crucial structure of plant life, protecting cells from damage, giving plants shape, and containing energy-rich nutrients. And yet the process of how the walls begin to form remains mysterious.
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Early galaxies were star-forming machines, gobbling up gas and spitting out stars with a furious intensity. A new model helps explain why things were so different back then.
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The Eta Aquariids will peak May 5-6, with debris from Halley's Comet creating swift meteors, though bright moonlight will make them harder to see.
The Eta Aquarid meteor shower soon will light the sky with debris from Halley's comet. But a bright moon will spoil the fun this year, making the display harder to glimpse.
Astronomers call this "eruptive mass loss," and it's a stellar drama we're still trying to fully grasp.
The 570-megapixel Dark Energy Camera in Chile has captured an extended halo and a dust-filled disk around the hat-shaped Sombrero Galaxy.
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Photos from around the space team.
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May 2, 2026: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.
A study led by UC Riverside physicist Hai-Bo Yu suggests that a new type of dark matter could explain three astrophysical
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The Legacy Survey of Space and Time (LSST) Camera at the National Science Foundation-Department of Energy (NSF-DOE) Vera C. Rubin Observatory in Chile is one of the most ambitious astronomical instruments ever constructed. As the largest digital camera built for astronomy, it is designed to capture images of the entire Southern Hemisphere sky every few nights for a decade, producing an unprecedented record of the dynamic universe. As it advances toward this extraordinary goal, the LSST Camera will enable astronomers to deepen their understanding of numerous astronomical phenomena. The camera supports investigations spanning dark matter, dark energy, the evolution of galaxies, supernovae, near-Earth asteroids, and more. The...
An international research team has achieved an important milestone for astrophysics at GSI/FAIR in Darmstadt: In the CRYRING@ESR storage ring, scientists were able to measure nuclear reactions at extremely low energies for the first time, mirroring the conditions inside stars. This novel experimental approach lays the foundation for decoding the formation of elements in the universe with even greater precision in the future.
Astronomers now believe there is at least one planet for every star in the Milky Way but new research has revealed a deeply unsettling twist in that picture. The most common planets in our Galaxy, it turns out, are almost entirely absent around the most common stars. Using data from NASA's TESS satellite, researchers found that the small, faint stars that make up the vast majority of the Milky Way seem to host rocky super Earths in abundance, but virtually no sub Neptunes, the planet type previously thought to be plentiful. The finding doesn't just refine existing theories of planet formation, it rewrites them.
'When we started visualizing this world, we wanted to do right by the fans'
The Milky Way galaxy grew into its current form with the help of smaller galaxies over time, which it has "consumed" or merged with. Astronomers are able to pick out which stars in the Milky Way came from other galaxies by identifying certain features, like the eccentricities of their galactic orbits and how many heavier elements they contain. Properties of some of the merged galaxies can then be determined when astronomers find collections of stars with similar features.
In this new image by the NASA/ESA Hubble Space Telescope, a spiral galaxy glittering with star clusters is the center of attention. NGC 3137 is located 53 million light-years away in the constellation Antlia (The Air Pump). As a nearby spiral galaxy, this target offers astronomers an excellent opportunity to study the cycle of stellar birth and death, as well as giving researchers a glimpse of a galactic system similar to our own.
Researchers are perplexed by a galaxy that seems too large and too dusty for its place in cosmic history, less than a half-billion years after the big bang
The concept of spacetime, first described in Einstein's theory of general relativity, has since been widely studied by many physicists worldwide. Spacetime is described mathematically as a four-dimensional (4D) continuum in which physical events occur, which merges three-dimensional (3D) space, with one-dimensional (1D) time.
A luminous swirl set against the deep black of space, the barred spiral galaxy IC 486 glows with a soft, ethereal light in this NASA Hubble Space Telescope image from April 13, 2026.
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'It's exciting to see things come to life and see it grow and expand. It just makes me happy every day.'
One of the most intriguing puzzles in cosmology is the existence of supermassive black holes that seem to appear very early in the history of the Universe. Astronomers keep finding them at times when, by all that they understand about the infant Universe, they shouldn't be there. The standard theory of black hole formation suggests that they shouldn't have had enough time to grow as massive as they appear to be. Yet, there they are, monster black holes with the mass of at least a billion suns. The James Webb Space Telescope (JWST) has found a large population of them in early epochs, and they've been observed in very early quasars as well.
Finding X-rays coming from one of the little red dots discovered by the James Webb Space Telescope could be the key to answering what these weird objects truly are.
Stars are not born by chance. New research shows that the mass of a star cluster dictates exactly what kinds of stars it will produce from cool, dim dwarfs to blazing stellar giants ten times the mass of our Sun. It is a discovery that rewrites our understanding of how galaxies grow and evolve, and raises questions that astronomers will be grappling with for years to come.
Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are planets that orbit stars outside our solar system. But new research from McMaster University reveals a surprising twist: the most common planets in our galaxy don't exist around the most common stars.
"We really think it's our best season yet."
Stars in this range may form a long-predicted type of supernova instead The post Evidence for a ‘forbidden range’ of black hole masses emerges in gravitational wave observations appeared first on Physics World.
On top of Kitt Peak in the Arizona Desert, a robotic surveyor just completed a five year mission to catalogue the positions of tens of millions of galaxies. The Dark Energy Spectroscopic Instrument (DESI) has now created the largest, most detailed 3D map of our universe ever constructed. And it’s not done yet, its main mission has been extended through 2028.
A new citizen science project invites the public to scan never-before-seen images from the Euclid Space Telescope in search of galaxies bending spacetime.
An international team of astronomers reports the discovery of a new supernova remnant (SNR) using radio observations. The newfound supernova remnant, dubbed Abeona, is one of the faintest radio SNRs so far detected. The discovery is detailed in a research paper published April 21 on the arXiv preprint server.
A new recipe of "quadratic gravity" could help to better define the picture of the Big Bang and the singularity that existed prior to the dawn of time.
A spectacular cosmic event nicknamed “SN Winny” could help solve one of astronomy’s biggest mysteries: how fast the universe is expanding. This rare superluminous supernova, located 10 billion light-years away, appears five times in the sky thanks to gravitational lensing, creating a dazzling “cosmic fireworks” effect. By measuring the slight delays between each appearance—caused by light taking different paths around two foreground galaxies—scientists can directly calculate the universe’s expansion rate.
Two University of Miami astrophysicists believe a recent unusual signal detected by a powerful ground-based observatory could provide
An international team of researchers – including experts at the Canadian Institute for Theoretical Astrophysics (CITA) in the
Our Galaxy's halo of hot gas is measurably warmer on one side than the other and a team of scientists have found the culprit. The gravitational pull of the Large Magellanic Cloud is drawing the Milky Way slowly southward, compressing the gas in its path and heating it up, much like a piston in an engine. The discovery solves a puzzle that has intrigued astronomers since the temperature difference was first detected in 2024.