Articles tagged with Galaxies
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Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
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Researchers from the University of Copenhagen have explained the mysterious 'red dots' seen in James Webb Space Telescope images as young black holes. The discovery provides insight into how the universe's first black holes were born and sheds light on their early development.
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.
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.
Researchers reconstruct Milky Way's evolution from its earliest phases to present day, revealing a tumultuous youth and chaotic conditions. The study provides new insights into galaxy formation and growth, highlighting the need for refinement in theoretical predictions.
Scientists have found that active galactic nuclei are two to six times more common in merging galaxies than non-merging counterparts. Galaxy mergers were most strongly associated with bright, dust-cloaked supermassive black holes linked to rapid growth.
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.
Astronomers have observed a record-breaking gamma-ray burst that lasted nearly seven hours, challenging existing models for these events. The burst's unusual duration and properties suggest multiple possible causes, including the collapse of a massive star or the collision of exotic stellar remnants.
A new study using advanced computer simulations has shed light on the mysterious chemical history of the Milky Way. Researchers found that galaxies like the Milky Way can develop two distinct chemical sequences through various mechanisms, challenging previous assumptions about the role of cosmic gas flows and galaxy mergers.
A team of astronomers from ICRAR has released new data showing that a galaxy's 'neighbourhood' plays a major role in its evolution over time. The study found that where a galaxy lives strongly influences its shape, size and growth rate in the distant Universe.
Researchers at RIKEN successfully simulated the Milky Way Galaxy with over 100 billion individual stars, far surpassing previous state-of-the-art models. This achievement demonstrates the power of AI-accelerated simulations in tackling complex multi-scale problems in astrophysics and beyond.
Astronomers detect a distant galaxy with temperatures of 90 Kelvin, indicating an extreme star factory that could have produced stars at a rate 180 times faster than the Milky Way. This discovery provides insight into how galaxies formed quickly in the early universe.
A team from the International Centre for Radio Astronomy Research has assembled a record-breaking radio colour image of the Milky Way. The unprecedented level of detail offers new insights into the galaxy's radio emission and structure.
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.
Astronomers detected complex organic molecules in ices outside the Milky Way for the first time, finding five different carbon-based compounds, including methanol and acetic acid. This discovery sheds light on how chemical ingredients for life spread throughout the cosmos.
A mysterious glow in the Milky Way could be a clue to dark matter's existence. Researchers used supercomputers to simulate dark matter locations and found matches with actual gamma ray maps.
Researchers at Goethe University Frankfurt used complex simulations to study the origin of powerful jets emitted by black holes. They discovered that magnetic reconnection is involved in extracting rotational energy and powering these jets.
Astronomers searching for evidence of early cosmic light found that the universe was in a warm state before it became visible. The discovery suggests that the universe's brightness increased significantly, marking a pivotal moment in its evolution.
The Gaia space telescope has discovered a giant wave in the Milky Way galaxy, causing stars to wobble over vast distances. The wave stretches across a huge portion of the galactic disc, affecting stars up to 65 thousand light-years away from the centre.
The new emulator Effort.jl allows researchers to analyze complex data sets faster and more efficiently than ever before. It uses state-of-the-art numerical methods and clever preprocessing strategies to achieve exceptional computational performance, making it possible to explore cosmic scenarios without waiting hours for each simulation.
Astronomers have made a groundbreaking discovery of a colossal bridge of neutral hydrogen gas linking two dwarf galaxies. The Virgo cluster plays a significant role in this phenomenon.
Researchers have uncovered the step-by-step process of gas transport to form accretion disks in massive star-forming regions. The study reveals a striking layered system of gas flows, including spiral-like streams and a bar-like structure that funnels gas toward the center.
Recent JWST observations revealed a new population of astronomical objects, known as black hole stars, which are emitting light predominantly at longer wavelengths. These objects, located extremely far away, have raised questions about galaxy evolution and the formation of stars on a massive scale.
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.
Researchers have discovered warm space dust in a reservoir of hot gas surrounding the Makani galaxy, located 100 million years away. The study, led by University of Maryland astronomer Sylvain Veilleux, provides evidence that ejected dust particles can survive long journeys and may be an important ingredient in planet and star formation.
Researchers have discovered a potentially massive black hole, 36 billion solar masses, in the Cosmic Horseshoe galaxy. The discovery was made using a combination of gravitational lensing and stellar kinematics, allowing for more certainty about the mass of this black hole than previous measurements.
A new study by Dartmouth astronomers has mapped 355 candidate satellite galaxies around dwarf galaxies, tripling the number previously surveyed. The researchers aim to understand how external conditions influence satellite formation and uncover insights into dark matter's nature.
Researchers used the Dark Energy Camera to image a 'bridge' of diffuse light spanning roughly a million light years between two galaxies in Abell 3667. The findings suggest that the brightest galaxies in the cluster are actively merging, with one larger galaxy stealing stars from a smaller one.
Using a combination of telescopes, an international team studied the closest FXT associated with a supernova, tracing it to a 'trapped' jet that produced high-energy particles. The findings explain the historically elusive phenomena and mark a significant step in understanding cosmic explosions.
Researchers at Yale University have discovered a supermassive black hole in the recently-collided galaxies known as the 'Infinity' galaxy. This finding is significant as it suggests a novel way for black holes to form and provides a possible explanation for the existence of incredibly massive black holes in the early universe.
Researchers surveyed luminous infrared galaxies to gain insight into galaxy formation in the early universe and possibly the Milky Way. They discovered massive clumps of newborn stars, unlike anything seen in the Milky Way.
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.
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.
A team from Norwegian University of Science and Technology proposes that supermassive black hole winds accelerate particles to create the mysterious high-energy radiation. The winds, which can reach speeds of up to half the speed of light, may be responsible for the creation of ultra-high-energy cosmic rays.
A team of astronomers observed a rare cosmic collision where one galaxy is pierced by intense radiation from a quasar, leading to the disruption of stellar nurseries. The study used ALMA and ESO's VLT telescopes to reveal the effects of this radiation on the internal structure of the gas in the regular galaxy.
Astronomers have found nearly 100 examples of massive black holes devouring stars in galaxy cores. A new study reveals a stealth black hole tearing apart a star 2,600 light years away from the galaxy's central massive black hole.
Researchers at Nagoya University discovered that Cepheid variable stars in the Small Magellanic Cloud are moving in opposing directions along two distinct axes, indicating the galaxy is being stretched by multiple external gravitational forces. The findings challenge previous theories of the galaxy's structure and dynamics.
Astrophysicist Jeremy Darling is pursuing a new method to measure the universe's gravitational wave background by analyzing the motion of quasars. His research could unravel the physics of gravity and help scientists understand galaxy evolution and fundamental assumptions about gravity.
A new study reveals that magnetar flares could be a potential source of heavy elements in the universe. By analyzing archival data and observations of magnetar flare events, researchers estimate that up to 10% of heavy elements like gold, uranium, and platinum may come from these cosmic explosions.
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.
The study provides a new look at the galactic region surrounding our solar system, revealing a roughly uniform background Lyman alpha sky brightness. The findings suggest hot interstellar gas bubbles may be regions of enhanced hydrogen gas emissions at a wavelength called Lyman alpha.
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.
Researchers have found evidence of a new population of faint galaxies hidden in the far-infrared sky, which could break current models of galaxy numbers and evolution. The discovery was made using data from the Herschel Space Observatory, which revealed a deeper image of the universe than ever before.
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.
Researchers have discovered key conditions needed for a stellar black hole to create plasma jets, including the rapid shrinkage of superheated gas material towards the black hole. This study reveals that jets form under dynamic conditions, providing insights into galaxy evolution and the properties of black holes.
The Fred Young Submillimeter Telescope (FYST) has arrived at its final home in Chile's Parque Astronómico Atacama after a six-week ocean voyage and trekking through the mountains. The telescope will study cosmic dawn, star and galaxy formation, and gravitational waves from the Big Bang.
Astronomers have discovered a clear sign of reionization beginning significantly earlier than thought in one of the most distant galaxies detected by James Webb. The galaxy's Lyman alpha light suggests an ionized bubble, a telltale signature of the Universe becoming transparent.
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.
Astronomers have discovered oxygen in JADES-GS-z14-0, the most distant known galaxy, revealing a galaxy that is much more chemically mature than expected. The detection suggests galaxies formed rapidly and are maturing rapidly, contradicting previous theories about early universe formation.
Astronomers observed a bright and chemically complex galaxy, JADES-GS-z14-0, when the universe was just 2% of its current age. The discovery reveals significant amounts of oxygen, suggesting the galaxy had formed stars for potentially 100 million years before observation.
Researchers have set new limits on the lifetime of dark matter particles using a combination of models and state-of-the-art observations. The findings highlight the utility of their technology, setting an upper bound of ten to a hundred million times the age of the universe for the frequency of dark matter decay events.
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 release of a unique Type Ia Supernovae dataset has significant implications for cosmologists measuring the universe's expansion history. The dataset, comprising 3628 supernovae, provides unprecedented precision and accuracy in exploring the properties of these events.
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.
Two new celestial objects have been confirmed using Gaia data, including a Super-Jupiter exoplanet and a brown dwarf. The discovery challenges current theories of planet formation and provides valuable data for understanding these intriguing objects. Gaia's ongoing mission will uncover hundreds of planets and brown dwarfs around nearby...
Astronomers have observed a phenomenon where a supermassive black hole forms plasma jets in real-time, marking the first-ever observation of this process. The discovery provides new insights into how black holes interact with their host galaxies and could help scientists understand the evolution of the universe.
A team of astronomers has obtained detailed images of a small galaxy and its surroundings, revealing features typically associated with larger galaxies. The study found that the mechanisms fueling galaxy growth may be more universal than previously thought, suggesting that even dwarf galaxies can build stellar halos through accretion.
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.