A study published in Nature Astronomy reveals thousands of new globular clusters have formed over the last billion years, primarily from a cool gas network surrounding giant galaxies. These clusters are thought to be the result of precipitation from hot gas and aging of stars.
Researchers have made a novel discovery about galactic winds, observing a huge outflow of gas extending far beyond a galaxy. The study's findings provide direct evidence for the role of galactic winds in creating the circumgalactic medium.
The Dark Energy Spectroscopic Instrument (DESI) has begun testing its capabilities, capturing light from distant galaxies and preparing to map 35 million galaxies across 1/3 of the sky. DESI aims to study 10 million stars in our galaxy, the Milky Way, tackling one of physics' most profound problems: the nature of dark energy.
Astrophysicists simulated giant radio galaxies to explain their formation. They found that these objects remain enormous even at great distances, challenging classical physics.
Researchers used simulations to show how supermassive black holes' powerful jets are disrupted by hot gas and galaxies, preventing gas from cooling and forming stars. The team found that this 'weather' mechanism may solve the long-standing 'cooling flow' puzzle plaguing astrophysicists.
The HERON collaboration completes the largest survey of nearby galaxy haloes, finding that diameter correlates with galaxy brightness; vast haloes found in bright galaxies, also seen in smaller discs. The team's low-cost system reveals faint stars tracing dark matter structures, offering new insights into galaxy evolution.
Researchers at UC Riverside discover large-scale winds associated with active black holes in small galaxies suppress star formation, impacting galaxy evolution. The team used the Sloan Digital Sky Survey data to identify 50 dwarf galaxies and found six of them showing signs of winds emanating from their active black holes.
Researchers at University of California, Riverside discover that Milky Way is undergoing a massive merger with its largest satellite galaxy, the Large Magellanic Cloud. Several ultrafaint dwarfs and relatively bright satellite galaxies were likely stolen from LMC.
A team of scientists discovered that massive galaxy filaments fuel the formation of stars and supermassive black holes, contradicting a long-held bottom-up model of galaxy formation. The study, published in Science, provides new insights into the early universe and the role of gas filaments in shaping its structure.
Researchers detected individual filaments of intergalactic gas in a newly forming cluster, providing insight into the Universe's evolution and galaxy formation. The analysis found that these filaments are arranged like long threads, extending over one million parsecs, and fueling star formation and super massive black hole growth.
Researchers simulated galaxy formation in a 'fuzzy' universe, where dark matter is ultralight and quantum-waves-like. The simulation suggests galaxies would form in extended filaments with striated patterns, potentially illuminating the type of dark matter present today.
Researchers have discovered that the galaxy Andromeda has eaten several smaller galaxies over the last few billion years, leaving behind remnants in large streams of stars. The study found faint traces of even earlier consumed galaxies, possibly dating back to 10 billion years ago.
Astronomers have uncovered two historic events in the Andromeda Galaxy, with evidence suggesting major changes to its structure occurred a few billion years ago and much earlier. The findings provide insights into the evolution and formation of both the Andromeda Galaxy and our own Milky Way.
A new Yale University study reveals that supermassive black holes grow in tandem with their host galaxies, influenced by the rate of star formation. The research provides a sharper understanding of the intricate relationship between these cosmic entities.
Astronomers have discovered the oldest known galaxy protocluster, z66OD, with 12 galaxies existing 13.0 billion years ago. One of these galaxies is Himiko, a giant object found previously by the Subaru Telescope, which was unexpectedly located on the edge of the protocluster.
A team of astronomers observed six LINER galaxies transforming into quasars in a matter of months, discovering an entirely new type of black hole activity. The sudden transitions challenge our current understanding of galactic evolution and suggest that the theory is all wrong.
Molecular clouds in distant galaxies have higher mass, density, and internal turbulence than those in nearby galaxies, producing more stars. The international team used ALMA to detect clouds in a Milky Way progenitor 8 billion light-years away.
The TEMPLATES team will study four galaxies using gravitational lensing to magnify light and gain insights into star formation. They aim to measure star-formation rates, map galaxy distributions, compare young and old stellar populations, and reveal how galaxies grow over time.
A Yale-led team of astronomers has simulated a large patch of the intergalactic medium (IGM), revealing how cold, dense gas clouds organize themselves within larger sheets or pancakes of matter. The findings suggest that these gas clouds can be pristine and metal-free, challenging previous assumptions about their formation and composit...
A University of Arizona-led team used supercomputer simulations to generate millions of virtual universes, challenging fundamental ideas about galaxy formation and the role of dark matter. The findings suggest galaxies formed stars more efficiently in the early universe than previously thought.
Astronomers have found a treasure trove of previously unknown ancient massive galaxies, defying current models of the universe. These galaxies are connected to supermassive black holes and dark matter, providing new insights into cosmic evolution.
Researchers at Durham University used supercomputer simulations to test Chameleon Theory, an alternative model for gravity. The findings suggest that galaxies like the Milky Way can form even with different laws of gravity, providing a new perspective on galaxy formation and dark energy.
Researchers using the radio telescope ALMA have detected a galaxy in the early Universe 13 billion years ago, which is actually two galaxies merging together. The team observed signals of oxygen, carbon, and dust from the galaxy B14-65666, providing the earliest evidence of merging galaxies yet discovered.
A new study using the Keck Cosmic Web Imager has provided the clearest evidence yet that filaments of cool gas spiral into young galaxies, explaining how they can make stars on fast timescales. The observations suggest a cold-flow model of galaxy formation, where cool gas flows directly into forming galaxies and is converted into stars.
Two giant galaxy clusters are caught in the act of colliding for the first time, providing valuable insights into the formation of large-scale structures. The clusters' merger shock wave is expected to have a significant impact on the evolution of galaxy clusters and cosmic structure.
A new study reveals no significant correlation between galaxy bulge size and spiral arm winding, contradicting a key assumption in Hubble's model. The findings suggest that most spirals may not be static density waves after all.
New observations using NASA's Spitzer Space Telescope reveal that some of the earliest galaxies in the Universe were significantly brighter than anticipated. The excess light suggests that these galaxies released high amounts of ionising radiation, which may have played a key role in the Epoch of Reionisation.
Researchers have developed a new filter to better map the dark universe, cutting through galaxies' messy emissions to provide clearer windows into dark matter and dark energy. The new method uses shearing effects to reduce errors and provides more accurate measurements.
Astronomers created a comprehensive 'history book' of galaxies using 16 years' worth of Hubble observations, covering 265,000 galaxies that stretch back 13.3 billion years. The new image mosaic provides a wide portrait of the distant universe, chronicling galaxy assembly over time.
Researchers found a star in the Milky Way Galaxy with low magnesium levels and high Europium levels, indicating it formed elsewhere, likely in a now vanished dwarf galaxy. The discovery suggests galaxy evolution models are supported by the presence of similar chemical signatures in other stars from dwarf galaxies orbiting the Milky Way.
A team of scientists discovered a star with unusually low magnesium and excessive heavy elements, indicating it originated from a disrupted dwarf galaxy. The study provides insight into the chemical evolution of dwarf galaxies and their role in shaping the Milky Way.
NGC 6052 is a pair of colliding galaxies visible in the Hercules constellation, consisting of two galaxies merging due to gravity. The Milky Way will undergo a similar collision with Andromeda in approximately 4 billion years.
Researchers investigate how photon mass could influence galaxy rotation curves, potentially explaining the enigmatic 'dark matter'. The study's findings suggest a possible solution to the long-standing rotation-curve problem.
Researchers propose dark matter scatters with each other like billiard balls to spread out evenly in small galaxies. This idea could solve the puzzle of why dark matter doesn't clump together as expected in bigger systems.
The MaNGA survey reveals the internal structure and composition of nearly 5,000 nearby galaxies, using resolved spectroscopy to dissect their composition and study star motions. The data release includes a massive 'stellar library' with spectra of over 3,000 stars in the Milky Way galaxy.
Massive black holes may have formed in rare, densely populated areas of the early universe, a new study suggests. The team used simulations to model the growth of dark matter halos and found that rapid assembly prevented normal star formation, leading to black hole formation instead.
Astronomers have developed a massive library of star spectra, enabling them to reconstruct the composition and history of distant galaxies. By analyzing thousands of stars in our Milky Way galaxy, researchers can build up a "library" of stellar spectra, allowing them to understand the unique mix of stars that makes up each galaxy.
Researchers detected just two galaxies near M94, with few stars each, contradicting predictions of galaxy formation models. The study suggests that Milky Way-like galaxies host a wider diversity of satellite populations than previously thought.
Scientists from the University of Colorado Boulder have developed a new technique for finding galaxy mergers, which may be crucial for building huge galaxies and forming new stars. The method was tested on data from the Sloan Digital Sky Survey and successfully identified fusing galaxies 80% of the time.
Scientists have discovered that dark matter can be heated up and pushed outwards due to star formation in galaxies. This phenomenon, known as 'dark matter heating', has been observed in 16 dwarf galaxies with varying star formation histories.
Astronomers have found a way to illuminate the elusive nature of dark matter by analyzing intracluster light from six massive galaxy clusters in the Frontier Fields program. The faint glow between galaxies in a cluster traces the path of dark matter, providing a more accurate understanding of its distribution.
Researchers have identified a giant, exceptional relic of a disrupted galaxy, comprising an elliptical head and a long tail. The 'tadpole' galaxy is 1 million light-years long from end to end and contains two nearby galaxies within it.
A team of astronomers has identified a giant disrupted 'tadpole' galaxy 300 million light years away, with an elliptical head and a long straight tail. The galaxy is ten times larger than the Milky Way and contains a system of two close disc galaxies.
Astronomers found a dust-obscured quasar formed from a galaxy merger, revealing how mergers can power quasars and obscure them with dust. The study used ALMA to analyze the quasar WISE J224607.57?052635.0 and its companion galaxies.
A team of astronomers captured the best view yet of merging galaxies and their supermassive black holes, revealing that galaxy mergers are critical in fueling the growth of these massive black holes. The discovery uses high-resolution images and X-ray data to pinpoint the location of these hidden black hole mergers.
Research team observes pairs of supermassive black holes drawn together by merging galaxies, providing insights into the late stages of cosmic collisions. The study confirms that over 17% of nearby galaxies host a pair of black holes at their center.
Researchers have developed an AI bot named ClaRAN to identify galaxies emitting powerful radio jets from supermassive black holes. The system uses machine learning to spot complex galaxy structures, reducing manual classification by human astronomers.
The Laser Interferometer Space Antenna (LISA) will enable astrophysicists to study gravitational waves emitted by black holes, which could unveil secrets about dark matter. Simulations suggest a connection between black hole merger rates and dark matter properties.
A team of scientists has detected a faint glow in the Lyman-alpha line across the entire sky, revealing extensive masses of gas around primitive galaxies. This discovery connects previously detected gas feeding galaxies with newly observed Lyman-alpha emission, providing new insights into the universe's infancy.
Astronomers are probing the mystery of how galaxies stop forming stars by studying a class of galaxies known as 'self-quenching' galaxies. These galaxies have gas being blown out at incredible speeds, but without evidence of black hole activity, suggesting alternative mechanisms may be at play.
For the first time, researchers have observed a powerful 'galactic wind' of molecules in a galaxy 12 billion light-years away, providing insights into how early galaxies regulated their growth. The wind was detected in a galaxy called SPT2319-55, which is more than 1 billion years old.
Astronomers have detected the most-distant galactic 'wind' of molecules ever observed, seen when the universe was one billion years old. The galaxy SPT2319-55, 12 billion light-years away, shows a powerful outflow of hydroxyl (OH) molecules, which could help regulate starbirth and galaxy growth.
Researchers used the Murchison Widefield Array to observe radiation from cosmic rays in two neighboring galaxies, detecting areas of star formation and remnants from past supernovae. The study provides insights into the rate of star formation in these galaxies, shedding light on their unique features.
Astronomers used ALMA to create the most detailed map of a distant starburst galaxy, finding highly unstable molecular clouds that lead to rapid star formation. The galaxy's gas is estimated to be consumed in 100 million years, 10 times faster than in other galaxies.
Scientists discover faintest satellite galaxies orbiting Milky Way are among the first galaxies to form, dating back over 13 billion years. The findings support the current model for the evolution of the universe, providing insight into the early stages of galaxy formation.
The discovery reveals hundreds of individual galaxies in the cluster, which surrounds an extremely active supermassive black hole at the center. The quasar's light has obscured these galaxies, making them invisible to astronomers.
A team of astronomers led by George Becker found that 12.5 billion years ago, the most opaque region in the universe had relatively little matter. The discovery sheds light on how galaxies formed and altered their surroundings in the early universe.
Researchers found that dwarf-galaxy mergers can replenish a galaxy's supply of star-making fuel, like the Milky Way's. The Large and Small Magellanic Clouds hold enough gas to replenish half of the Milky Way's supply, with their gas footprint continuing to expand even after collision.
A new study from RIT reveals that galaxy outskirts are likely hunting grounds for dying massive stars and black holes. Researchers have identified a method to pinpoint the location of massive black holes using supernovae with collapsing cores, offering a promising approach to detecting gravitational waves.
Researchers used the Keck Cosmic Web Imager to examine Q2343-BX418, a young galaxy about 10 billion light years away, providing insights into its gas halo and its role in star formation. The study suggests that the galaxy's surrounding gas is giving off a specific type of light, offering clues to its evolution.