Researchers from University College London have disputed the existence of hypernovae, the most powerful explosions in the Universe, by suggesting that ordinary supernovae could better explain the formation of unusual stars in the Milky Way's halo and a neighboring dwarf galaxy. The study's findings indicate that the unusual composition...
Astronomers have discovered a star slowly consuming a brown dwarf, 300 light years away, in a system that challenges the traditional view of stellar cannibalism. The slow stellar cannibalism could carry on for hundreds of thousands, or even billions of years, offering an alternative to the star swallowing its companion.
Researchers have discovered a retrograde planet orbiting a small star, a rare occurrence that raises new questions about planetary formation and evolution. The GJ 3090 b planet's unusual orbit may be the result of its host star acquiring a second disk of gas and dust, which could have shaped its planetary system billions of years ago.
Astronomers at Lund University detected sodium gas variations in front of a young star, suggesting comets may transport water to inner planetary system regions. Comets' orbits were simulated, showing they can be flung towards the star by gas giants' gravitational pull, transporting volatile substances.
Researchers found that cosmic star formation has declined dramatically, but neutral atomic hydrogen density has only decreased slightly. The study suggests that the decline in star formation activity is not due to the depletion of gas, but rather a decrease in the efficiency of converting gas into molecular hydrogen.
Two new studies from Karolinska Institutet suggest that inflammation and genetic factors may contribute to cluster headache, a rare neurological disorder characterized by severe headache attacks. The studies also found that exposure to substances in tobacco smoke may interact with biological mechanisms in the condition.
Astronomers have discovered the fastest star in the Milky Way, S301, orbiting the supermassive black hole Sagittarius A* at a speed of 25,000 km/s. The star's tight orbit takes just 8.7 years to complete and approaches the black hole at a mere 12 times the distance of Earth to the Sun.
Researchers have discovered a globular cluster stellar stream in another galaxy, offering new insights into the nature of dark matter. The study demonstrates that these streams can be used to measure dark matter content beyond our own galaxy, opening doors to a broader understanding of its behavior.
A team of astronomers has discovered an extremely bright and red spot in the early universe, which they believe is a mashup of a black hole and a star. The object, dubbed a 'black hole star,' would help solve the mystery of other mysterious 'little red dots' found in deep-space images.
Researchers have found four exoplanets orbiting Barnard's Star, all smaller than Earth and Venus, but larger than Mars. The planets' composition suggests they are rich in magnesium, which creates periclase, a mineral that does not store water effectively.
A team of researchers, including Michael Fausnaugh from Texas Tech University, have identified a new planet using the Transiting Exoplanet Survey Satellite (TESS) mission. The planet, Gaia23bra b, is a super Jupiter orbiting far from its host star and offers insight into the detection methods used in astronomy.
The TESS mission has discovered a planet orbiting a distant star through microlensing, revealing a world about 1.63 times as massive as Jupiter at an orbital distance similar to Jupiter's. This finding suggests additional microlensing planets may be hidden within archived TESS observations.
Astronomers have discovered a galaxy cluster in the distant universe that is more mature than expected, with unprecedented mass concentration toward its center. The James Webb Space Telescope images reveal strong gravitational lensing effects, providing valuable insights into dark matter distribution and cosmological models.
Researchers successfully engineered a novel platinum cluster catalyst that maximizes hydrogen production performance while minimizing platinum usage. The catalyst enables precise control over the number of atoms in each cluster, achieving world-leading hydrogen production per unit of platinum.
Keck Hospital has received a 5-star quality rating from CMS for its excellence in patient care across five measured standards. This achievement solidifies the hospital's commitment to patient safety and best possible outcomes.
The study reveals that more massive young star clusters clear away their natal gas faster than lower-mass clusters. This has implications for our understanding of star formation and how the young stars affect their surroundings.
Astronomers have identified the edge of the Milky Way's star-forming disc for the first time, finding that most star formation happens within 40,000 light-years of the Galactic Center. This discovery uses a new approach combining star ages with galaxy simulations to pinpoint the boundary.
Astronomers have identified a metal-poor star in the Large Magellanic Cloud, which is almost entirely hydrogen and helium with trace amounts of carbon and iron. Studying this low-mass star can help clarify our understanding of the first generation of stars, called Population III stars.
The discovery of TOI-5205 b, a Jupiter-sized planet orbiting a four times more massive star than our Sun, reveals its atmosphere has fewer heavy elements than expected. The research suggests that the planet's interior and atmosphere are not mixing, resulting in a carbon-rich, oxygen-poor atmosphere.
Researchers from Kyushu University used ALMA to observe a baby star producing a giant ring of gas about 1,000 au in size, which helps the star release excess energy. The team found that this ring is slightly warmer than its surroundings and hypothesize it's produced through magnetic field threading.
Astronomers from the University of Liège have solved a 50-year-old stellar mystery by attributing the X-rays emitted by Gamma Cas to a magnetic white dwarf orbiting the star. The study used high-energy astrophysics instrumentation and revealed that the X-rays are associated with the compact companion, not the massive Be star itself.
A team of astronomers has detected rare evidence of two planets colliding, which could provide valuable insights into the formation of our solar system. The unlikely event was observed in a distant star, Gaia20ehk, which was found to have massive amounts of rocks and dust passing in front of it, blocking its light.
Researchers discovered a star in the Andromeda Galaxy that vanished without going supernova, instead collapsing directly into a black hole. The team's analysis revealed the process of stellar collapse and provided evidence for convection's role in shaping a black hole's outer layers.
A team led by Columbia University professor Kishalay De observed a massive star in the Andromeda galaxy collapse directly into a black hole without exploding as a supernova. This event challenges long-held assumptions about stellar deaths, suggesting that stars with similar mass may or may not successfully explode.
A team of researchers used spectral data from the James Webb Space Telescope to study the HR 8799 star system, finding clear evidence of sulfur on three gas giant planets. This discovery suggests that these massive planets likely formed through core accretion, contradicting older models.
Research investigates the influence of strong laser fields on nuclear decay lifetimes, altering nuclear structure and properties. This study provides valuable insights into laser-nucleus interactions and holds promise for applications in the nuclear energy sector.
Researchers have captured the first radio waves from a rare type of exploding star, revealing the star's final years. The discovery provides an unprecedented look at a massive star's behavior before its death in a supernova explosion.
Researchers have imaged a beautiful shock wave around a dead star, RXJ0528+2838, which challenges our current understanding of how dead stars interact with their surroundings. The team found that the white dwarf has been expelling a powerful outflow for at least 1000 years, driven by its strong magnetic field.
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.
Researchers have found a galaxy cluster with scorching hot gas just 1.4 billion years after the Big Bang, five times hotter than predicted, and containing three supermassive black holes that pumped energy into the surroundings. This discovery could upend current models of galaxy cluster formation and evolution.
Astronomers have detected a new gamma-ray source near Westerlund 1, a young massive star cluster in the Milky Way. The source is connected to a 'nascent outflow' of particles driven by the cluster's collective wind, creating a cavity in the interstellar medium.
A new study on TRAPPIST-1's flares could help scientists unravel how the star shapes its nearby planets, potentially in drastic ways. The researchers used observations from NASA's James Webb Space Telescope and computer simulations to understand the physics behind TRAPPIST-1's temper tantrums.
Astronomers detected faint 'starquakes' in the companion star of Gaia BH2, allowing them to measure its core properties with remarkable precision. The star's makeup contradicts its age, suggesting it acquired extra mass from a companion through a merger.
The partnership aims to co-develop and evaluate next-generation self-amplifying RNA (saRNA) vaccines targeting seasonal and pandemic influenza. Apriori's Octavia platform will be combined with A*STAR IDL's saRNA delivery technology to develop improved H5 influenza vaccines that anticipate infection in humans.
New research reveals Pleiades star cluster as core of larger structure spanning 1,950 light-years, with similar ages and chemical compositions among its members. The study uses rotation-based approach to identify stars sharing origin story.
Researchers from Australian National University have detected binary stars in the outer regions of 47 Tucanae, a globular cluster in the Milky Way. This discovery sheds light on how these clusters formed and evolved over billions of years.
Researchers detected protostellar jets and outflows using ALMA in the Milky Way's outer region, showing that star formation works similarly across diverse cosmic environments. The discovery revealed episodic ejection cycles and unique chemistry in low-metallicity regions.
Researchers at Ohio State University suggest a large cloud of dust and gas occluded Earth's view of the star ASASSN-24fw, causing its brightness to dim by 97% before brightening again. The team proposes that this disk is likely made up of carbon or water ice close in size to a large grain of dust.
Researchers have discovered a massive gas and dust bubble surrounding the red supergiant star DFK 52, which contains as much mass as our own Sun. The bubble is expanding at an incredible rate and was likely formed when the star ejected part of its outer layers in a powerful explosion around 4000 years ago.
A team of astrophysicists from the University of Bonn and Iran has reclassified Ursa Major III as a compact star cluster containing a black hole core. Simulations suggest that the object's high mass-to-light ratio can be explained by the presence of dark stars rather than dark matter.
Researchers at the University of Bonn have found that three star clusters are part of the same system, with the Orion Nebula being the youngest, Pleiades the middle-aged, and Hyades the oldest. The team used computer simulations to model the life cycle of these star clusters, which showed they follow a similar development path.
Astronomers detect first-ever evidence of a 'planet with a death wish' as HIP 67522 b orbits extremely close to its host star, triggering flares that erode the planet's atmosphere. The radiation is so intense it causes the planet to shrink and lose mass at an alarming rate.
Researchers found that the Galactic Center's star-forming regions struggle to form high-mass stars, unlike typical star-forming regions, due to extreme conditions caused by the black hole. The study suggests these regions effectively produce just one generation of stars and lack sufficient material for continued formation.
An international team of astronomers has found a giant planet, TOI-6894b, orbiting a tiny star, TOI-6894, which is smaller than expected to host such a massive planet. The discovery challenges the core accretion theory on planet formation.
A team of HKU astrophysicists has confirmed the existence of a retrograde planet in the nu Octantis binary star system, revealing the crucial role of binary star evolution in its origin. The discovery provides new insights into planetary formation and stellar evolution, particularly in tight binary systems with evolved stellar components.
Researchers from Hiroshima University and others identified genes associated with increased cluster-root secretion and absorption, including phosphate transporters and acid phosphatases. The study provides insights into the molecular mechanisms of cluster roots that enhance phosphorus availability in low-nutrient soils.
The Stuttgart Cluster of Excellence IntCDC will continue to develop innovative construction methods that reduce resource consumption and CO2 emissions through computational design and engineering methods. The cluster aims to evolve its Co-Design approach into a Co-Agency approach, focusing on bio-based building materials, AI technologi...
The Konstanz Cluster of Excellence 'The Politics of Inequality' will continue to investigate the political causes and consequences of growing inequality in society. Researchers aim to prevent self-reinforcing processes and reduce structural inequalities.
Astronomers have identified a rare type of binary star system featuring a rapidly spinning millisecond pulsar and a helium star companion. The system is thought to have formed through common envelope evolution, with the neutron star spiraling closer to its companion before ejecting energy and leaving behind a tightly bound binary.
A team of researchers at Nagoya University has discovered a fast-moving, high-temperature gas flow in the center of the Centaurus cluster of galaxies. This finding may solve the 'cooling flow problem', which explains why galaxy clusters appear to be warm despite emitting X-rays.
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.
A new study by the University of Oulu has directly observed the merger of star clusters in dwarf galaxies for the first time, shedding light on their formation. The observations confirm that compact star clusters form through the cannibalization of smaller globular clusters at the centers of these galaxies.
The STAR initiative has benefitted over six thousand researchers worldwide by providing access to top-tier articles and enabling them to update references and enrich their findings. This support has helped scholars from under-resourced regions contribute to global knowledge, transforming their careers and advancing academic discourse.
Researchers found a high-velocity star ejected from a globular cluster at an extreme velocity of nearly 550 km/s, suggesting the presence of an intermediate-mass black hole. The star's similarities with the cluster's chemical composition and age provide strong evidence for the IMBH's existence.
A new study by UNSW Sydney researchers has discovered the sound frequencies of a cluster of stars 2700 light years away, allowing scientists to map the history of the Milky Way and other galaxies. The discovery uses oscillation frequencies to determine a star's age and mass, providing insights into galaxy formation and evolution.
Astronomers have discovered that stars in a specific region of our galaxy exhibit fluctuations in brightness, caused by 'starquakes'. These fluctuations can be translated into frequencies, providing clues about a star's age and properties. The study, led by Dr Claudia Reyes, offers new insights into how our galaxy formed.
A team of astronomers has discovered four mini-Earth exoplanets around Barnard's Star, the nearest single star to Earth. The exoplanets are rocky and orbit their home star in a matter of days, with one being the least massive planet discovered using radial velocity technique.
Astronomers have found solid evidence for four tiny planets circling Barnard's Star, with masses only 20-30% that of Earth. The discovery was made using the MAROON-X instrument and confirms previous hints from another study.
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.
Researchers uncover novel formation process for free-floating planetary-mass objects, which are cosmic nomads drifting freely through space. These objects can form directly through violent interactions between circumstellar disks in young star clusters.