Articles tagged with Universe
A new study suggests that the ultra-high-energy neutrino may have originated from a population of blazars, which could provide a plausible explanation for the rare phenomenon. The researchers used a combination of simulations and observations from various instruments to test their hypothesis.
Astronomers from the University of Waterloo have observed a distant jellyfish galaxy, providing rare insight into how galaxies were transformed in the early universe. The discovery challenges previous beliefs about galaxy clusters and their impact on galaxy properties.
Physicists at MIT observed clear signs that quarks create wakes as they speed through the plasma, confirming the plasma behaves like a liquid. This finding provides new insights into the properties of the quark-gluon plasma and its behavior in the early universe.
Researchers created the highest resolution map of dark matter, showing its interaction with normal matter through gravity. The new data from NASA's James Webb Space Telescope confirms previous research and provides new details about dark matter's influence on the Universe.
Researchers found that reionization-driven turbulence can power the turbulent dynamo, amplifying weak magnetic fields over time. This mechanism relies on established physics rather than exotic particles or forces, explaining the origin of intergalactic magnetic fields.
Astronomers have spotted an ancient galaxy that was slowly starved of fuel by a supermassive black hole. The galaxy's lack of cold gas prevented it from forming new stars, despite its relatively young age. Repeated episodes of heating and gas removal by the black hole likely drained the galaxy's fuel in as little as 16-220 million years.
A team of researchers has observed a massive galaxy cluster that challenges existing models of the universe's evolution. The cluster's unusual structure and high density of cold, neutral hydrogen gas suggest a different history than previously thought. This discovery raises questions about the fate of large structures in the universe.
Scientists at CU Boulder have solved a pressing mystery about the universe's gravitational wave background by revealing the role of smaller galaxies in galaxy evolution. The new study suggests that when a smaller supermassive black hole merges with a larger one, the smaller black hole gains mass, producing larger gravitational waves.
Researchers identified nine objects with characteristics of stars and galaxies, sparking new questions about the cosmos. These 'platypus galaxies' have narrow emission lines indicative of active star formation, defying expectations.
A team of astronomers has discovered that the winds of giant stars like R Doradus are driven by complex processes, rather than being powered solely by starlight and stardust. The study used advanced computer simulations to model how starlight interacts with dust grains, finding that they are too small to be pushed outward by starlight ...
Astronomers discover galaxy Virgil with dual personality – ordinary in visible light but harboring massive black hole. JWST observations reveal hidden nature of Virgil, challenging current models of black hole formation.
Michael Blanton will lead the Carnegie Science Observatories as its 12th director, focusing on large-scale astronomical surveys to constrain cosmological history. The new director brings a deep well of knowledge of instrumentation and data collection to oversee research at Pasadena's campus and Las Campanas Observatory.
A new study published in Monthly Notices of the Royal Astronomical Society suggests that the universe's expansion may have started to slow rather than accelerate at an ever-increasing rate. The findings cast doubt on the long-standing theory of dark energy, which is believed to be driving distant galaxies away increasingly faster.
Researchers developed a new method to probe an atom's nucleus using its own electrons as messengers within a molecule. They measured the energy of electrons whizzing around a radium atom in a molecule, detecting a slight energy shift and analyzing it to sense the internal structure of the nucleus.
Researchers used the James Webb Space Telescope to study young galaxies in the early universe, finding most were turbulent and 'clumpy'. Despite this chaos, galaxy dynamics show a gradual transition towards ordered structures, suggesting that galaxies like our Milky Way formed through frequent mergers and bursts of star formation.
Researchers at WVU are enhancing the calibration of radio telescopes to measure dark energy by analyzing the '21-centimeter signal' from neutral hydrogen atoms. This technique aims to improve the ability of radio telescopes to detect large-scale structures in the universe, such as galaxy clusters and voids.
A recent study used Japan's Fugaku supercomputer to simulate the effects of time-varying dark energy on cosmic evolution. The results show that a higher matter density creates stronger gravitational forces, leading to earlier and more efficient formation of massive galaxy clusters.
A new study uses advanced computer simulations to shed light on the fundamental properties of dark matter. The research reveals how gas clouds in the early Universe could reveal information about dark matter's mass, which is crucial for particle physicists to develop theoretical models.
Astronomers discovered a greedy white dwarf star consuming its closest celestial companion at an unprecedented rate. The study found that the super-dense white dwarf is burning brightly due to the mass transfer between the two stars, potentially leading to a massive explosion visible from Earth.
A University of Queensland researcher developed a new mathematical model explaining the universe's evolution, including collapsing regions of matter and expanding voids. The model resolves long-standing issues like Hubble tension and dynamical dark energy, showing complexity in the universe impacts cosmological measurements.
Researchers used infrared images to spot bright objects, then applied the 'dropout' technique to confirm their nature. The study could challenge current ideas about galaxy formation in the early universe if confirmed.
The Nancy Grace Roman Space Telescope will feature a 'sunblock' shield made of lightweight yet stiff panels designed to limit heat transfer. The observatory's instruments will benefit from this design, which can detect faint signals from space.
The NASA Roman Space Telescope team has completed installing solar panels on the observatory, a crucial step towards launch. The Solar Array Sun Shield will provide power and shade, keeping instruments cool for infrared observations.
A team of researchers has discovered that a specific radio signal can reveal the masses of the earliest stars, crucial for understanding the Cosmic Dawn. The study utilizes the 21-centimetre signal, created by hydrogen atoms filling gaps between star-forming regions, to inform predictions about future radio telescopes like REACH and SKA.
Researchers propose a new subset of string theories that incorporate dynamic tension could help describe the real universe without violating observational constraints. This approach may alleviate the 'swampland problem,' which has hindered conventional string theory's ability to reproduce inflation and dark energy.
The COSMOS-Web field maps nearly 800,000 galaxies spanning 98% of cosmic time, challenging existing notions of the infant universe. Researchers see roughly 10 times more galaxies than expected at incredible distances, sparking new questions about the early universe and its mysteries.
The researchers calculated that the universe will decay via Hawking-like radiation in approximately 10^78 years. This time frame applies to white dwarf stars and neutron stellar black holes, both of which take the same amount of time to evaporate. The findings contradict previous estimates and shed new light on the theory of relativity.
Researchers explore alternative models of black holes without singularities, which could be distinguishable from standard black holes through subtle deviations in predictions. Observational tests using sophisticated instruments and different channels may reveal clues about internal structure.
Researchers found that super-Earths can exist far from their host star like gas giants do from the sun. The team's results suggest these massive worlds are prevalent across the universe, with at least one super-Earth present for every three stars.
Roman's surveys will investigate dark energy and dark matter governing cosmic evolution, and study the demographics of worlds beyond our solar system. The missions include High-Latitude Wide-Area Survey, High-Latitude Time-Domain Survey, and Galactic Bulge Time-Domain Survey.
Researchers at King's College London and Harvard University develop a detector that can identify axions, leading potential candidates for dark matter. The Axion Quasiparticle (AQ) technology has the potential to discover dark matter in five years with further development.
A new study finds that a millisecond magnetar could have triggered the flashes of GRB 230307A, an extremely bright GRB detected in March 2023. The observation suggests that the magnetar model is consistent with the features of the prompt emission and the long-lasting X-ray plateau.
Ryan Amberger, a Ph.D. candidate in physics at Texas A&M University, has been selected for a 2025 Los Alamos-Texas A&M Fellowship to conduct dissertation research on nuclear astrophysics. He aims to improve understanding of the s-process by studying neutron cross sections.
A new study proposes a third category of galaxies: red star-forming. These galaxies produce low-mass stars and may have played a significant role in the universe's history. The findings could change our understanding of galaxy evolution, star formation, and the life cycle of galaxies.
The thorium-229 nuclear optical clock has the potential to achieve a very high-precision time and frequency standard due to its unique properties. Despite significant progress, numerous challenges remain, including temperature sensitivity and the scarcity of the isotope.
A study by Philip Kurian and colleagues reveals a revised upper bound on carbon-based life's computational capacity, connecting it to the universe's information-processing limit. The discovery of quantum superradiance in cytoskeletal filaments enables eukaryotic organisms to process information through tryptophan networks.
Researchers found that AGN radiation can have a paradoxically nurturing effect on life, especially when oxygen levels are present, allowing the planet's protective ozone layer to grow and shield it from radiation. This process can help ensure life's success, but its effects depend on how close the planet is to the source of radiation.
The new DESI results show that the impact of dark energy may be weakening over time, suggesting a fundamental shift in how we think about dark energy. The collaboration's findings are consistent with other measurements, including supernovae and the light left over from the dawn of the universe.
The Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s infancy. These new images show subtle variations in density and velocity of gases in the young universe, helping scientists answer longstanding questions about the universe’s origins.
Researchers from Osaka Metropolitan University used a deep learning model to discover new bubble-like structures in the Milky Way galaxy, providing insights into star formation and galaxy evolution. The study also revealed shell-like structures formed by supernova explosions.
Researchers have discovered flows of hot gas in the Centaurus Cluster core, shedding light on how galactic clusters stay hot through 'sloshing' caused by collisions. This solves the longstanding mystery of cluster core heating and provides new insights into the formation and evolution of galactic clusters.
A new study reproduces the formation and evolution of a magnetar using numerical simulations, providing insights into their origin. The research supports the dynamo action theory, which suggests that magnetic fields are amplified through complex motions in proto-neutron stars.
A team of researchers from Kyushu University discovered that about 60% of molecular clouds in the Small Magellanic Cloud had a filamentary structure, while 40% were 'fluffy' with higher temperatures. This finding provides new insights into star formation in early-universe-like environments.
The Euclid space telescope has discovered a stunning Einstein ring in the galaxy NGC 6505, showcasing rare gravitational lensing effects. This remarkable finding demonstrates the power of Euclid's high-resolution instruments and provides new insights into the expansion of the Universe.
Researchers identified a new process leading to formation of low-field magnetars, solving the mystery that puzzled scientists since their discovery in 2010. The team used advanced simulations to model magneto-thermal evolution of neutron stars, finding that a specific dynamo process can generate weaker magnetic fields.
Physicists have gained valuable insights into false vacuum decay using a quantum machine, which could determine the ultimate fate of the Universe. The simulation reveals complex interactions between bubbles in a false vacuum, offering new possibilities for studying the fundamental physics of the Universe.
Astronomers detect a super-Earth in an eccentric orbit, oscillating between habitable and non-habitable zones. The discovery provides a laboratory for testing new hypotheses on the search for life beyond Earth.
Adam Leroy, a professor of astronomy at Ohio State University, has been recognized with the 2025 Henry Draper Medal for his groundbreaking work on the interstellar medium and its relationship to star formation in nearby galaxies. His research has provided unprecedented detail on the physical nature of this material, advancing our under...
The Hubble Space Telescope has completed a comprehensive survey of the Andromeda galaxy, revealing its structure and evolution on a holistic scale. The observations provide insights into the galaxy's age, heavy-element abundance, and stellar masses, helping astronomers distinguish between competing scenarios of merger history.
Edwin Hubble discovered a new universe by analyzing the brightness of stars, revealing that our galaxy is just one of billions in the universe. His findings showed that galaxies move away from each other at faster speeds with greater distances.
NASA has successfully integrated its Nancy Grace Roman Space Telescope's payload into the Roman spacecraft, paving the way for transformative cosmic observations. The telescope will undergo extensive testing to ensure proper function and performance in space.
Researchers observed a galaxy nearly 6.5 billion light-years away, revealing a large number of individual stars made visible through gravitational lensing. The discovery provides new insights into the universe's greatest mysteries, including dark matter and stellar populations.
Researchers found a core-collapsing self-interacting dark matter subhalo is responsible for the peculiar spur and gap features observed in the GD-1 stellar stream. This discovery provides insights into the nature of dark matter itself and offers a new explanation for the observed perturbations.
Astronomers at MIT used a novel technique to determine the precise location of a fast radio burst, finding it likely originated from the magnetosphere around a rotating neutron star. The study provides conclusive evidence that fast radio bursts can emerge from this highly magnetic environment.
The Event Horizon Telescope has taken detailed measurements of a galaxy's supermassive black hole and its powerful jets. The research reveals strong magnetic fields close to the event horizon and estimates their strength, consistent with previous estimates.
The Roman Space Telescope has successfully integrated its telescope, instruments, and spacecraft components at NASA Goddard. The observatory will focus cosmic light and send it to its instruments, revealing billions of objects in space and time.
A new paper in JCAP proposes a way to test the anthropic principle, which suggests the universe is fine-tuned for life. The proposal involves confirming three conditions: cosmic inflation, axion existence, and dark matter not being made of axions.
Scientists have discovered birth sites of gigantic elliptical galaxies, suggesting large gas flows and galaxy collisions created these ancient systems. The research, published in Nature, may finally unravel the enigma of how these giant galaxies formed.
Researchers at Cal Poly and an international team are exploring unproven theories related to nuclear decay and the nature of matter. They aim to detect a type of decay that is currently forbidden by physics laws, which could reveal insights into the universe's origins.
Researchers analyzed 21 distant quasars to find a connection between X-ray emission and wind speed, indicating rapid accretion of matter. This study challenges physics limits and provides insights for future X-ray missions.