Keyword: blackhole
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Galaxies observed by the JWST with those rotating one way circled in red, those rotating the other wat circled in blue (Image credit: Monthly Notices of the Royal Astronomical Society (2025)) ==================================================================================== Without a doubt, since its launch, the James Webb Space Telescope (JWST) has revolutionized our view of the early universe, but its new findings could put astronomers in a spin. In fact, it could tell us something profound about the birth of the universe by possibly hinting that everything we see around us is sealed within a black hole. The $10 billion telescope, which began observing the cosmos...
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A radical new theory suggests that black holes could transition into white holes, creating a location in space where time begins by ejecting material back into the cosmos. The theory also suggests a quantum mechanics link between black and white holes, including an aspect of enigmatic dark matter. The research team behind the new theory believes their work could represent a critical step toward reconciling quantum mechanics and gravity, potentially leading to new theories about the universe’s very nature. Black Holes (and White Holes) Have Long Fascinated Scientists First proposed by Albert Einstein, black holes have long fascinated scientists. Still,...
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A groundbreaking reanalysis of the M87 galaxy’s supermassive black hole, M87*, unveils intriguing new insights into the structure and behavior of its plasma environment. Credit: EHT collaboration First Step on the Way to a Video of the Black Hole In 2019, the Event Horizon Telescope (EHT) Collaboration made history by releasing the first-ever image of a black hole—M87*, located at the center of the galaxy M87. This groundbreaking image was based on data collected in 2017. Now, the EHT team has analyzed additional data from their 2018 observations, revealing new findings. The latest analysis shows that the brightest part of...
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Astronomers have, for the first time, watched the moment a feeding supermassive black hole at the heart of a distant galaxy spat out a jet of material at one-third of the speed of light. Plus, the structure is technically made up of two jets, each about half a light-year across. The black hole in question, which has a mass around 1.4 billion times that of the sun, is located at the heart of a galaxy designated 1ES 1927+654. It's located about 270 million light-years away in the constellation Draco. "The launch of a black hole jet has never been observed...
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The M87 Galaxy, as seen via the Hubble Space Telescope (NASA/Hubble). For the first time in a decade, the black hole at the center of the M87 galaxy has erupted in an enormous gamma-ray flare, a rare and significant event that defied expectations in the latest analysis by astrophysicists. Several large collaborations, including the Event Horizon Telescope (EHT), as well as the Fermi Gamma Ray Space Telescope, and the MAGIC, VERITAS, HESS, and EAVN telescopes pooled their resources to observe the massive cosmic event, detailed in a new paper published in Astronomy and Astrophysics. M87 Black Hole Messier 87 is...
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Webb Telescope observations reveal that supermassive black holes starve galaxies of star-forming gas, as seen in ‘Pablo’s Galaxy’, where high-speed gas expulsion by the black hole has ceased new star formation. (Artist’s concept.) Credit: SciTechDaily.com ================================================================================= Using the James Webb Space Telescope, astronomers have uncovered that supermassive black holes can exhaust the resources necessary for star formation in their host galaxies, effectively starving them. This was observed in a galaxy similar in size to the Milky Way, located in the early universe. The discovery reveals that the black hole is actively preventing star formation by expelling essential star-forming gas at...
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A recent study underscores the dynamic nature of black holes and extends similar thermodynamic characteristics to Extremely Compact Objects, advancing our comprehension of their behavior in quantum gravity scenarios.A paper titled "Universality of the thermodynamics of a quantum-mechanically radiating black hole departing from thermality," published in Physics Letters B highlights the importance of considering black holes as dynamical systems, where variations in their geometry during radiation emissions are critical to accurately describing their thermodynamic behavior.The study also suggests that extremely compact objects (ECOs) share these thermodynamic properties with black holes, regardless of their event horizon status. The significance of this...
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Explanation: What glows there? The answer depends: sea or sky? In the sea, the unusual blue glow is bioluminescence. Specifically, the glimmer arises from Noctiluca scintillans, single-celled plankton stimulated by the lapping waves. The plankton use their glow to startle and illuminate predators. This mid-February display on an island in the Maldives was so intense that the astrophotographer described it as a turquoise wonderland. In the sky, by contrast, are the more familiar glows of stars and nebulas. The white band rising from the artificially-illuminated green plants is created by billions of stars in the central disk of our Milky...
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Explanation: Globular star cluster Omega Centauri, also known as NGC 5139, is some 15,000 light-years away. The cluster is packed with about 10 million stars much older than the Sun within a volume about 150 light-years in diameter. It's the largest and brightest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core...
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Explanation: This beautiful telephoto composition spans light-years in a natural night skyscape from the island of Crete. Looking south, exposures both track the stars and record a fixed foreground in three merged panels that cover a 10x12 degree wide field of view. The May 15 waxing gibbous moonlight illuminates the church and mountainous terrain. A mere 18 thousand light-years away, huge globular star cluster Omega Centauri (NGC 5139) shining above gives a good visual impression of its appearance in binoculars on that starry night. Active galaxy Centaurus A (NGC 5128) is near the top of the frame, some 11 million...
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Explanation: This huge ball of stars predates our Sun. Long before humankind evolved, before dinosaurs roamed, and even before our Earth existed, ancient globs of stars condensed and orbited a young Milky Way Galaxy. Of the 200 or so globular clusters that survive today, Omega Centauri is the largest, containing over ten million stars. Omega Centauri is also the brightest globular cluster, at apparent visual magnitude 3.9 it is visible to southern observers with the unaided eye. Cataloged as NGC 5139, Omega Centauri is about 18,000 light-years away and 150 light-years in diameter. Unlike many other globular clusters, the stars...
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Explanation: Globular star cluster Omega Centauri, also known as NGC 5139, is some 15,000 light-years away. The cluster is packed with about 10 million stars much older than the Sun within a volume about 150 light-years in diameter, the largest and brightest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core of...
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Explanation: Globular star cluster 47 Tucanae is a jewel of the southern sky. Also known as NGC 104, it roams the halo of our Milky Way Galaxy along with around 200 other globular star clusters. The second brightest globular cluster (after Omega Centauri) as seen from planet Earth, it lies about 13,000 light-years away and can be spotted naked-eye near the Small Magellanic Cloud (SMC) in the constellation of the Toucan. Of course, the SMC is some 210,000 light-years distant, a satellite galaxy of our Milky Way and not physically close to 47 Tuc. Stars on the outskirts of the...
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Explanation: Some 13,000 light-years away toward the southern constellation Pavo, the globular star cluster NGC 6752 roams the halo of our Milky Way galaxy. Over 10 billion years old, NGC 6752 follows clusters Omega Centauri and 47 Tucanae as the third brightest globular in planet Earth's night sky. It holds over 100 thousand stars in a sphere about 100 light-years in diameter. Telescopic explorations of the NGC 6752 have found that a remarkable fraction of the stars near the cluster's core, are multiple star systems. They also reveal the presence of blue straggle stars, stars which appear to be too...
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Explanation: This huge ball of stars predates our Sun. Long before humankind evolved, before dinosaurs roamed, and even before our Earth existed, ancient globs of stars condensed and orbited a young Milky Way Galaxy. Of the 200 or so globular clusters that survive today, Omega Centauri is the largest, containing over ten million stars. Omega Centauri is also the brightest globular cluster, at apparent visual magnitude 3.9 it is visible to southern observers with the unaided eye. Cataloged as NGC 5139, Omega Centauri is about 18,000 light-years away and 150 light-years in diameter. Unlike many other globular clusters, the stars...
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Explanation: Featured in this sharp telescopic image, globular star cluster Omega Centauri (NGC 5139) is some 15,000 light-years away. Some 150 light-years in diameter, the cluster is packed with about 10 million stars much older than the Sun. Omega Cen is the largest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core...
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It’s not even truly part of our galaxy, but a newly discovered black hole in Omega Centauri with a mass at least 20,000 times the Sun is closer than Sagittarius A*. The remnant galactic nucleus known as Omega Centauri has a black hole at its heart, revealed by fast-moving stars in the box at its heart. Image Credit: ESA/Hubble & NASA, M. Häberle (MPIA) =============================================================================== The largest of the star clusters that surround the Milky Way, Omega Centauri, has a black hole at the core with a mass 20,000-50,000 times that of the Sun, new evidence reveals. At 18,000 light...
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Explanation: Globular star cluster Omega Centauri packs about 10 million stars much older than the Sun into a volume some 150 light-years in diameter. Also known as NGC 5139, at a distance of 15,000 light-years it's the largest and brightest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core of a small...
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Explanation: Globular star cluster Omega Centauri, also known as NGC 5139, is 15,000 light-years away. The cluster is packed with about 10 million stars much older than the Sun within a volume about 150 light-years in diameter. It's the largest and brightest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core of...
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Explanation: What happens to a star that goes near a black hole? If the star directly impacts a massive black hole, then the star falls in completely -- and everything vanishes. More likely, though, the star goes close enough to have the black hole's gravity pull away its outer layers, or disrupt, the star. Then, most of the star's gas does not fall into the black hole. These stellar tidal disruption events can be as bright as a supernova, and an increasing amount of them are being discovered by automated sky surveys. In the featured artist's illustration, a star has...
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