An international team of astronomers trained a neural network with millions of synthetic simulations and artificial intelligence to tease out new cosmic curiosities about the black hole at the center of our Milky Way. The researchers suspect that the black hole is spinning at nearly top speed, its rotation axis pointing towards the Earth.
SourceMorgridge Institute for Research·JournalAstronomy and Astrophysics·TypeData/statistical analysis·DateJun 6, 2025
A global team tracked an unusual object emitting pulses of radio waves and X-rays lasting two minutes in the Milky Way galaxy. The object, ASKAP J1832-0911, is a long-period transient (LPT) located 15,000 light-years from Earth.
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Researchers have found that most Lyman Alpha Emitters (LAEs) are experiencing their first major burst of star formation, revealing crucial insights into galaxy development and the early stages of the universe. The study sheds light on the Milky Way's origin story, providing key information about how galaxies grow and evolve.
SourceRutgers University·JournalThe Astrophysical Journal Letters·TypeObservational study·DateJun 4, 2025
Scientists used NASA's Hubble and Gaia space telescopes to simulate the evolution of the Milky Way and Andromeda over 10 billion years. Contrary to previous beliefs, they found a only 2% probability of collision within five billion years.
SourceDurham University·JournalNature Astronomy·TypeComputational simulation/modeling·DateJun 2, 2025
Researchers use ALMA to observe J0107a, a 'monster' galaxy 11.1 billion years ago. They find similarities with modern galaxies in gas distribution and motion, but higher concentrations and faster gas flow rates.
SourceNational Institutes of Natural Sciences·JournalNature·TypeObservational study·DateMay 21, 2025
Researchers find over 500 dense star-forming cores with possible protoplanetary disks in the Milky Way's Central Molecular Zone. Dual-band observations reveal unexpected spectral reddening, suggesting the presence of these early stages of solar system formation.
SourceChinese Academy of Sciences Headquarters·JournalAstronomy and Astrophysics·TypeObservational study·DateMay 21, 2025
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Researchers discover over 500 dense cores in Milky Way's Central Molecular Zone, which may indicate widespread presence of protoplanetary disks. The findings propose two scenarios: self-absorption of smaller structures within dense cores or growth of dust grains in these systems.
SourceUniversity of Cologne·JournalAstronomy and Astrophysics·TypeObservational study·DateMay 15, 2025
A new computer model simulates magnetism and turbulence in the interstellar medium, providing unprecedented detail on the Milky Way Galaxy's overall magnetic field. The model also helps understand star formation and the propagation of cosmic rays, offering insights into astrophysical phenomenon.
SourceUniversity of Toronto·JournalNature Astronomy·TypeComputational simulation/modeling·DateMay 13, 2025
A team of Potsdam researchers has detected infrared signatures of stellar winds from massive stars in the Small Magellanic Cloud galaxy, a satellite of the Milky Way. The study, led by Armin Mang Román, uses James Webb Space Telescope data to analyze the young, massive star cluster NGC 346.
SourceUniversity of Potsdam·JournalThe Astrophysical Journal Letters·TypeObservational study·DateMay 6, 2025
A massive family of over 1000 young stars in the Milky Way has been spotted behaving oddly, moving away from each other at a much faster rate than expected. Using Gaia's vast spectroscopic data, scientists developed a new model to explore and identify these young stars.
SourceEuropean Space Agency·JournalThe Astrophysical Journal·DateMay 1, 2025
Astronomers have discovered a massive spiral galaxy resembling the Milky Way, formed just 1 billion years after the Big Bang. The galaxy, Zhúlóng, exhibits a mature structure with a central old bulge and large star-forming disk, challenging our understanding of galaxy formation.
SourceUniversité de Genève·JournalAstronomy and Astrophysics·TypeNews article·DateApr 16, 2025
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Researchers found a mature spiral galaxy, Zhúlóng, with a structure similar to the Milky Way's, challenging previous expectations that large disks take billions of years to form. This discovery suggests that spiral arms can develop on shorter timescales and may be short-lived in the early Universe.
SourceAssociation of Universities for Research in Astronomy (AURA)·JournalAstronomy and Astrophysics·DateApr 16, 2025
Research suggests that massive stars in the Small Magellanic Cloud are being pulled apart by the Large Magellanic Cloud. The discovery reveals a new pattern in stellar motion, which could transform our understanding of galaxy evolution and interactions.
SourceNagoya University·JournalThe Astrophysical Journal Supplement Series·DateApr 10, 2025
A new database of 400 years of sightings compiled by researchers at Colorado State University may help anticipate when and where milky seas will occur. The archive includes eyewitness reports, satellite data, and individual accounts submitted to the Marine Observer Journal.
SourceColorado State University·JournalEarth and Space Science·DateApr 9, 2025
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.
SourceScience China Press·JournalNational Science Review·TypeObservational study·DateApr 7, 2025
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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.
SourceUniversity of New South Wales·JournalNature·DateApr 2, 2025
Scientists studied Sagittarius C using the James Webb Space Telescope to understand why fewer new stars are born in the region. They discovered powerful magnetic field lines that form long, bright filaments of hot hydrogen gas, slowing down star formation.
SourceUniversity of Colorado at Boulder·JournalThe Astrophysical Journal·DateApr 2, 2025
Astronomers have discovered a cosmic anomaly that challenges our understanding of the universe, revealing a spiral galaxy harboring a supermassive black hole billions of times the Sun's mass. This discovery forces us to rethink how galaxies evolve and how supermassive black holes grow in them.
SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·TypeObservational study·DateMar 21, 2025
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.
SourceOsaka Metropolitan University·JournalPublications of the Astronomical Society of Japan·TypeObservational study·DateMar 17, 2025
Astronomers have created a detailed 3D map of dust in the Milky Way galaxy, providing new insights into the effects of dust on celestial observations. The map reveals unexpected properties of interstellar dust clouds, including a steepening extinction curve in areas of intermediate density.
SourceMax Planck Institute for Astronomy·JournalScience·DateMar 13, 2025
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Astronomers have discovered entwined dwarf stars emitting radio pulses, challenging the long-held assumption that only neutron stars were responsible for these emissions. The discovery was made using follow-up observations of two stars orbiting each other every two hours.
SourceUniversity of Sydney·JournalNature Astronomy·TypeObservational study·DateMar 12, 2025
Researchers found Andromeda XXXV, the smallest and dimmest satellite galaxy to date, which challenges our understanding of galaxy formation and evolution. The discovery provides new insights into how galaxies survive different epochs of the universe.
SourceUniversity of Michigan·JournalThe Astrophysical Journal Letters·DateMar 11, 2025
Astronomers observe an ultra-hot nova, LMC68, using Gemini South's FLAMINGOS-2 instrument, detecting ionized silicon atoms. The signal is unprecedented, shining up to 100 times brighter than the Sun. This is the first near-infrared spectroscopic observation of an extragalactic recurrent nova.
SourceAssociation of Universities for Research in Astronomy (AURA)·DateMar 5, 2025
The study reveals a dynamic ecosystem with diverse dwarf galaxies, unlike the Milky Way's smaller satellite system. Hubble's observations provide insights into how small-galaxy growth is affected by massive galaxies like Andromeda.
SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·DateFeb 27, 2025
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.
SourceKyushu University·JournalThe Astrophysical Journal·TypeObservational study·DateFeb 20, 2025
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A Northwestern University-led team observed Sagittarius A*, the Milky Way's supermassive black hole, exhibiting a constant stream of flares with no periods of rest. The level of activity varies widely, from short interludes to long stretches, and appears to be random.
SourceNorthwestern University·JournalThe Astrophysical Journal Letters·TypeObservational study·DateFeb 18, 2025
Scientists have discovered a distant, two-lobed radio jet that spans an astonishing 200,000 light-years at least, twice the width of the Milky Way. The team used a combination of telescopes to detect the jet and measure its properties, including the mass of the quasar producing it.
SourceAssociation of Universities for Research in Astronomy (AURA)·JournalThe Astrophysical Journal Letters·DateFeb 6, 2025
The Hubble Space Telescope has captured a panoramic view of the Andromeda Galaxy, unveiling hundreds of millions of stars and providing new clues to its evolutionary history. The galaxy's unique structural features, such as coherent streams of stars, suggest a more active recent star formation and interaction history than the Milky Way.
SourceUniversity of Washington·JournalThe Astrophysical Journal·TypeObservational study·DateJan 17, 2025
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.
Researchers led by Kristen McQuinn used the Webb Telescope to find that Leo P formed stars early on but stopped for a few billion years during the Epoch of Reionization. The study provides insights into the growth of low-mass structures and the processes that led to star creation.
SourceRutgers University·JournalThe Astrophysical Journal·TypeObservational study·DateJan 16, 2025
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Astronomers discovered three ultra-faint dwarf galaxies in an isolated region of space, containing only very old stars. The findings support the theory that events in the early universe cut off star formation in small galaxies.
SourceUniversity of Arizona·JournalThe Astrophysical Journal Letters·TypeObservational study·DateJan 15, 2025
Researchers have discovered three tiny ultra-faint dwarf galaxies, dubbed 'stellar-ghost-town' galaxies, with minimal gas and old stars. This suggests that their star formation was cut off early in the universe's history due to insufficient gravity or events like reionization or supernovae explosions.
SourceAssociation of Universities for Research in Astronomy (AURA)·JournalThe Astrophysical Journal Letters·DateJan 15, 2025
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.
The James Webb Space Telescope has observed 17 carbon-rich dust shells expanding at regular intervals from two massive stars in the Milky Way galaxy. The dust shells are racing away from the stars at speeds of over 1,600 miles per second and have persisted for over 130 years.
SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·TypeCommentary/editorial·DateJan 13, 2025
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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.
SourceUniversity of California - Riverside·JournalThe Astrophysical Journal Letters·TypeComputational simulation/modeling·DateJan 6, 2025
A team of physicists and astronomers found that the Universe is expanding in a more varied way than previously thought, making dark energy unnecessary. The new evidence supports the timescape model of cosmic expansion, which attributes differences in stretching light to calibration issues rather than dark energy.
SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society Letters·DateDec 20, 2024
Astronomers from Wellesley College have discovered a newly forming galaxy that resembles a young Milky Way, with 10 distinct star clusters forming at different times. The galaxy, dubbed the 'Firefly Sparkle', has a mass similar to the Milky Way's when it was in its early stages of development.
SourceWellesley College·JournalNature·TypeObservational study·DateDec 11, 2024
Researchers used pulsar accelerations and stellar velocities to determine the presence of a cluster of stellar mass black holes at the centre of Omega Centauri. The study refines understanding of the formation of these intermediate-mass black holes, which could bridge the gap between stellar and supermassive black holes.
SourceUniversity of Surrey·JournalAstronomy and Astrophysics·DateDec 9, 2024
Researchers have observed a rare metal-poor supernova, providing valuable information about the early universe. The study revealed that this supernova was distinct from others in nearby galaxies, with unique properties such as a steady brightness period and rapid spin.
SourceOhio State University·JournalThe Astrophysical Journal·DateNov 25, 2024
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Scientists have imaged a star outside our galaxy for the first time, using ESO's Very Large Telescope Interferometer. The star, WOH G64, is a red supergiant in its last stages before becoming a supernova, and the image shows a unique egg-shaped cocoon of gas and dust surrounding it.
SourceESO·JournalAstronomy and Astrophysics·DateNov 21, 2024
A nearby supernova explosion could produce gamma rays that pinpoint the mass of a key dark matter candidate, the axion. The Fermi Gamma-ray Space Telescope would need to be in position to detect these gamma rays within 10 seconds of the supernova's core collapse.
SourceUniversity of California - Berkeley·JournalPhysical Review Letters·DateNov 21, 2024
Researchers discovered a class of unusually large and red galaxies, called Ultra-red Flattened Objects (UFOs), near the limit of Hubble's observable range. The James Webb Space Telescope's infrared capabilities allowed them to spot these 'dustier cousins' of the Milky Way.
SourceUniversity of Colorado at Boulder·JournalThe Astrophysical Journal·DateNov 15, 2024
An international team led by UNIGE has identified three ultra-massive galaxies forming at unexpected speeds in the early Universe. The discovery challenges existing galaxy formation models and suggests that massive galaxies may have been more efficient in building stars than previously thought.
SourceUniversité de Genève·JournalNature·TypeNews article·DateNov 13, 2024
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An international team discovered three ultra-massive galaxies, each nearly as massive as the Milky Way, forming at unexpected speeds. The findings indicate that star formation in the early Universe was more efficient than previously thought, posing a challenge to existing galaxy formation models.
SourceUniversity of Bath·JournalNature·TypeImaging analysis·DateNov 13, 2024
Researchers from DTU have discovered a neutron star that rotates at an astonishing 716 times per second, making it one of the fastest-spinning objects ever observed. The neutron star is part of an X-ray binary star system and is located in the Sagittarius constellation.
SourceTechnical University of Denmark·JournalThe Astrophysical Journal·DateOct 30, 2024
Astronomers have detected the most distant Milky-Way-like galaxy, REBELS-25, with a rotation and structure similar to our own galaxy. The galaxy is estimated to be 700 million years old, challenging current understanding of galaxy formation.
SourceESO·JournalMonthly Notices of the Royal Astronomical Society·DateOct 7, 2024
A new study identifies regions where gravity dominates, such as the Sloan Great Wall and Shapley Supercluster, suggesting that our Milky Way likely resides in the larger Shapley basin. The research provides an unprecedented look into the gravitational landscape of the local Universe.
SourceThe Hebrew University of Jerusalem·JournalNature Astronomy·TypeComputational simulation/modeling·DateSep 27, 2024
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The European Southern Observatory's VISTA telescope has created the largest infrared map of the Milky Way, comprising over 200,000 images and covering an area equivalent to 8600 full moons. The dataset contains about 10 times more objects than a previous map released in 2012, including newborn stars, globular clusters, and brown dwarfs.
SourceESO·JournalAstronomy and Astrophysics·DateSep 26, 2024
The SAGA Survey has found that the Milky Way Galaxy appears to be an outlier in terms of its satellite galaxies, having acquired only two large satellites recently compared to other systems. The survey also explores the mechanisms that would stop star formation in these small galaxies, finding that environmental factors play a role.
SourceUniversity of Utah·JournalThe Astrophysical Journal·DateSep 25, 2024
Astronomers have discovered the largest pair of black hole jets yet, stretching 23 million light-years and equivalent to 140 Milky Way galaxies. This finding suggests that these massive jet systems may have played a significant role in shaping galaxies in the early universe.
SourceCalifornia Institute of Technology·JournalNature·DateSep 18, 2024
Astronomers have observed star clusters in the Extreme Outer Galaxy using NASA's James Webb Space Telescope, revealing young protostars and jets of material. The detailed images provide unprecedented insights into star formation in this distant region.
SourceNASA/Goddard Space Flight Center·JournalThe Astronomical Journal·TypeCommentary/editorial·DateSep 12, 2024
UNLV astrophysicists found evidence suggesting the supermassive black hole at the center of our Milky Way galaxy, Sgr A*, is likely the result of a past cosmic merger. The study utilized data from the Event Horizon Telescope's 2022 observation of Sgr A* to investigate various growth models and demonstrated that the misaligned spin prop...
SourceUniversity of Nevada, Las Vegas·JournalNature Astronomy·TypeObservational study·DateSep 6, 2024
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Researchers found that dark matter radiation could heat hydrogen gas long enough for gravity to condense it into clouds big and dense enough to turn into supermassive black holes. This process bypasses the need for stellar burning, accretion, and mergers, which typically take billions of years.
SourceUniversity of California - Los Angeles·JournalPhysical Review Letters·DateAug 28, 2024
Researchers at the University of South Australia have developed an AI sensor that can accurately measure the orientation of the Milky Way in low light, using a technique inspired by the dung beetle. This system could improve navigation for drones and satellites in difficult lighting conditions.
SourceUniversity of South Australia·JournalBiomimetics·TypeComputational simulation/modeling·DateAug 21, 2024
Researchers have found the nearest massive black hole to Earth, located at the center of Omega Centauri, a galaxy that was swallowed by the Milky Way. The discovery provides insight into the formation history of galaxies and confirms long-held suspicions about the existence of intermediate-mass black holes.
SourceMax Planck Institute for Astronomy·JournalNature·TypeObservational study·DateJul 10, 2024
A research team used the "motion picture" method to measure the precession rate of the Milky Way's disk warp, revealing a slightly oblate dark matter halo with a flattening ratio between 0.84 and 0.96. The study found that the current dark matter halo exhibits a retrograde precession direction at a rate of 2 km/s/kpc.
SourceChinese Academy of Sciences Headquarters·JournalNature Astronomy·DateJul 5, 2024
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Scientists have discovered tiny, bright objects in the early universe that are packed with hundreds of millions of years old stars, defying conventional thinking about galaxy evolution. The objects also harbor surprisingly large supermassive black holes, estimated to be 100 to 1,000 times more massive than our Milky Way's black hole.
SourcePenn State·JournalThe Astrophysical Journal Letters·TypeImaging analysis·DateJun 28, 2024
Researchers have discovered a hidden treasure in the Milky Way, identifying Cygnus X-3 as an ultra-luminous X-ray source. The use of X-ray polarized vision has revealed the configuration of dense matter surrounding the black hole, sparking new insights into extreme matter consumption.
SourceUniversity of Turku·JournalNature Astronomy·DateJun 24, 2024
Researchers discovered a rotating, magnetic wind that helps the galaxy's central supermassive black hole grow, similar to the birth of stars and planets. The study provides new clues to solving the mystery of how supermassive black holes grow, with potential implications for understanding galaxy evolution.
SourceNorthwestern University·JournalAstronomy and Astrophysics·TypeObservational study·DateJun 20, 2024
Researchers discovered nine X-ray flares from Sagittarius A* and analyzed a decade's worth of data to understand the black hole's environment. They also examined the black hole's activity using echoes from a giant molecular cloud, providing insights into its past activity.
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