Articles tagged with Astrophysics
Gravastars may form when a star collapses under its own mass, triggering the creation of a mini universe with dark energy. This equilibrium stabilizes the object, preventing it from becoming a black hole.
New study by University of Southampton confirms the universe's expansion is still accelerating as previously found, debunking 2025 claims that the cosmos was slowing. The team re-evaluated data using Type Ia supernovae to calculate vast cosmic distances and found no error in their methods.
The Kavli Prize in Astrophysics 2026 is awarded to Vasily Belokurov, Amina Helmi, and Rodrigo Ibata for their discovery of past mergers that prove the Milky Way galaxy was built through hierarchical accretion. This breakthrough reveals how our universe is formed and challenges assumptions on galaxy formation.
Researchers used deep learning to model energy release during r-process nucleosynthesis in hydrodynamic simulations, gaining new insights into element formation. The results suggest that r-process heating is an important effect that should be better accounted for in future modeling.
The discovery reveals a surprisingly mature black hole at just 850 million years old, with an accretion disk resembling a flat pancake. This challenges the understanding of how supermassive black holes can grow and mature in a short amount of cosmic time.
A physicist at Mississippi State University has received a prestigious CAREER Award to study stellar explosions and their role in forming elements. The five-year project aims to improve computer models of supernovae and neutron stars, shedding light on the universe's elemental composition.
A team of astronomers used JWST to detect the motion of stars near a galaxy's center affected by a dormant black hole's gravity. The findings suggest that densest galaxies were sites of rapid black hole growth early in cosmic history.
Astrophysicists at Northwestern University have discovered evidence of a powerful wind blowing from the Milky Way's central supermassive black hole, Sagittarius A*. The study resolves one of the longest-standing mysteries in astronomy and opens a new window into the physics at play in the center of the Milky Way. The team used five yea...
Researchers have discovered the most distant dormant black hole yet detected, located over 10 billion light years away. The black hole's mass is approximately 6 billion times that of the sun, providing unprecedented insights into black holes in the early universe.
A team of astronomers has identified a rare stellar system that provides a unique natural laboratory to study extreme physics. The system, called ASKAP J1745−5051, consists of a white dwarf and a red dwarf star, producing powerful bursts of radio waves and X-rays.
Researchers at Texas A&M University are designing how humans will build and survive on the moon, focusing on sustainable construction using lunar regolith. The institution's efforts aim to reduce costs associated with shipping materials to the moon, making it possible to produce rocket propellant locally.
Researchers at Kyushu University used 3D computer simulations to understand the physics behind hub-and-spoke patterns in star-forming regions. The study shows that oblique shocks create invisible channels guiding compressed gas into central filaments, forming the radial shape of baby stars' cradles.
The study suggests that massive galaxies formed through violent mergers, leading to a rapid burst of star formation and the growth of supermassive black holes. This process prevented these galaxies from producing new stars for over a billion years, leaving them as quiescent galaxies.
Researchers use helioseismology to track sound waves inside the Sun, finding a gradual change in structure just beneath the surface that spans multiple cycles. This discovery reveals a shift towards more tightly confined magnetic activity near the surface, with implications for space weather predictions.
The Cherenkov Telescope Array Observatory (CTAO) is advancing towards initial operations with the inauguration of four Large-Sized Telescopes (LSTs) on October 15, 2026. The telescopes will enable groundbreaking gamma-ray astronomy, answering questions about dark matter.
The LIGO-Virgo-KAGRA Collaboration has released a new catalog of gravitational-wave detections, revealing distinct sub-populations of merging black holes. These sub-populations are thought to arise from different formation pathways, including the collapse of gas clouds and hierarchical mergers between black holes.
The GWTC-5.0 catalog includes 161 new gravitational wave events detected between April 10, 2024 and January 28, 2025, bringing the total number of confirmed events to 390.
The LVK network has announced the release of its updated Gravitational Wave Transient Catalogue-5.0, containing 161 new events detected between April 2024 and January 2025. This update includes exceptional detections, such as the best sky localization ever achieved and evidence for second-generation black holes.
Researchers from Vienna and Frankfurt have developed a mathematical formula describing critical collapse, where spacetime organizes into a regular structure that may form a black hole. This phenomenon is similar to the formation of ice crystals in liquid water.
Researchers from the LIGO–Virgo–KAGRA Collaboration demonstrate how Astro Calibration technique improves signal processing by leveraging astrophysical models and comparison to predicted signals. This enhances detection of cosmic phenomena like black hole mergers, refining estimates of masses, spins, distance, and location.
Researchers found amino acids are consistently more diverse and evenly distributed in biological samples than abiotic ones, while fatty acids show the opposite pattern. This fundamental principle of life may be detectable in data collected by space missions.
The most massive black holes detected by gravitational waves were formed through repeated and violent collision events in densely populated star clusters. The study identifies two distinct populations, with high-mass systems showing rapid spins and a signature consistent with cluster mergers.
A new framework called CIGaRS allows scientists to extract more information from Type Ia supernovae by jointly analyzing their explosions and host galaxies. This enables precise distance measurements without spectroscopy, crucial for the Vera C. Rubin Observatory's 10-year sky survey.
Scientists have measured the atmosphere of the mini-Neptune, revealing a heavy composition with water vapor, carbon dioxide, and sulfur dioxide. The findings suggest that both planets formed far from their host star, then were drawn inward through a gradual process, preserving their atmospheres.
The DAMPE satellite has identified a universal feature in the energy spectra of primary cosmic ray nuclei, revealing that spectral softening occurs around a rigidity of about 15 TV. This observation strongly supports models explaining the acceleration and transport of cosmic rays based on their rigidity.
The new facility enables scientists to observe and measure detonation forces in unprecedented detail, shedding light on industrial safety risks and potential breakthroughs. Researchers aim to develop safer designs and protocols by examining detonation disasters like the Buncefield Fire.
A new detector technology has been developed to track elementary particles in large volumes of unsegmented scintillator material. The system uses a plenoptic camera and single-photon avalanche diode array sensors to achieve high-resolution 3D tracking, even in photon-starved conditions.
A study led by University of California, Riverside graduate student Yash Aggarwal suggests that dark matter decays could have seeded the direct collapse of galaxies into giant black holes. The research found that a window of dark matter masses between 24 and 27 electronvolts could produce conditions for black hole formation.
Researchers use high-resolution simulations to model the disruption of stars near supermassive black holes, uncovering details about their mass, spin, and orientation. The study sheds light on the formation of tidal disruption events (TDEs), which offer a unique way to observe these invisible objects.
Researchers at ISTA team present theoretical evidence that magnetic fields in stars can persist through all stages of evolution, emerging as 'fossil fields' at the surfaces of older remnants. This discovery sheds new light on our understanding of stellar magnetism and its relation to starquakes.
A study suggests that self-interacting dark matter (SIDM) can explain unusual gravitational effects observed in various astrophysical environments. Dense clumps of SIDM can account for high-density structures in the universe, providing a promising candidate for explaining small-scale cosmic structure.
Scientists in Japan developed a high-resolution X-ray telescope using precision mirror-making technology, capable of distinguishing objects 3.5 mm wide from 1 km away. The telescope was tested on the ground using a unique evaluation system before launch on the FOXSI sounding rocket mission.
Astronomers have identified the most pristine star in the known universe, SDSS J0715-7334, with a metal content of less than 0.005%. This ancient immigrant was born about 80,000 light-years from Earth and has been pulled into the Milky Way galaxy over time.
Astronomers have discovered an ancient immigrant star in the Milky Way that formed in a companion galaxy and migrated billions of years ago. The star, SDSSJ0715-7334, has the lowest metallicity ever observed, suggesting it is one of the oldest stars in the universe.
Researchers from ISTA identify two white dwarfs, Gandalf and Moon-Sized, which share five properties, including X-ray emission, despite being isolated objects. These discoveries suggest the existence of a new class of star remnants with unique magnetic and rotational properties.
A Mississippi State physicist has achieved a significant scientific advancement by producing a direct laboratory measurement of a key nuclear reaction believed to occur during explosive bursts on neutron stars. These reactions forge heavier elements, including oxygen and iron, which are essential for planet formation and life.
Researchers at the University of Waterloo have developed a new theory that suggests the universe's rapid early expansion could emerge naturally from a deeper, more complete theory of quantum gravity. This approach offers a unified picture that connects the earliest moments of the universe to modern cosmology.
A team of astrophysicists offers a new explanation for negative superhumps in cataclysmic variable star systems, proposing an eccentric accretion disk model. This theory explains the prevalence of negative superhumps across a wide range of binary star masses and may also explain positive superhumps in high mass ratio systems.
GSI/FAIR's new Galactic Cosmic Ray simulator enables researchers to better understand radiation doses and control effects in human tissue and technical components. The simulator replicates the GCR exposure in a lightly shielded habitat, providing a crucial tool for space radiation research.
Researchers found our Sun joined a mass migration of similar stars 4-6 billion years ago, shedding light on galaxy evolution and the corotation barrier. The discovery reveals the time range over which the bar structure at the galactic center was formed.
A team of international researchers led by a UC Santa Barbara graduate student has confirmed a long-standing theory of stellar death by applying the principles of general relativity to a superluminous supernova. The discovery suggests that a magnetar, a rapidly spinning neutron star with a massive magnetic field, powers the supernova, ...
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.
The Global Physics Summit will feature over 12,000 individual presentations on new research in astrophysics, particle physics, and quantum information science. Registered journalists and public information officers will receive daily emails with information during the meeting.
Asteroids in binary systems actively exchange rocks and dust through gentle, slow-motion collisions, reshaping them over millions of years. The DART mission's findings confirm the YORP effect, where sunlight makes small asteroids spin faster, causing material to fly off their surfaces.
The updated catalogue, GWTC-4, doubles the number of events, revealing 128 new gravitational signals and a kaleidoscope of cosmic collisions, including massive black hole binaries and neutron star binaries. The data provides unprecedented precision to test Einstein's General Relativity and probe the universe's evolution.
The latest catalog more than doubles the number of gravitational-wave detections made by LIGO, Virgo, and KAGRA observatories, revealing a kaleidoscope of cosmic collisions. The LVK's Gravitational-Wave Transient Catalog-4.0 comprises 128 new detections from a nine-month period.
Researchers at Nagoya University found that magnetic fields keep the equator spinning faster than the poles in stars, preventing a rotation flip even as they slow down with age. This contradicts 45 years of theoretical predictions and could help scientists solve stellar mysteries.
Researchers analyzed over 40 years of astronomical data to find detectable changes inside the Sun during four quiet periods. The study reveals that even small differences in solar magnetic activity produce measurable changes in the Sun's internal structure.
Researchers analyzed Ryugu asteroid samples to understand magnetic field evolution in early solar system. The study found that 23 of 28 samples exhibited stable NRM components, providing critical information on the spatiotemporal evolution of magnetic fields.
The Rubin Observatory has launched a real-time monitoring system, producing up to 7 million alerts per night, which will enable scientists to discover rare and unusual objects in the universe. The alerts will chronicle the treasure trove of scientific discoveries made through the observatory's time-lapse record of the universe.
A team of researchers from Illinois and UChicago has developed a novel way to compute the Hubble constant using gravitational waves, improving accuracy over prior methods. The new method uses background gravitational-wave hum from merging black holes in distant galaxies to learn about the age and composition of the universe.
A team of astronomers led by UMass Amherst has discovered a population of dusty, star-forming galaxies at the edge of the universe, formed 13 billion years ago. These galaxies are linked to ultrabright, young galaxies and massive quiescent galaxies, providing new insights into galaxy evolution.
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.