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.
Astronomers have uncovered one of the oldest star clusters in the Milky Way Galaxy using high-resolution adaptive optics imaging from the Gemini Observatory. The study reveals that the cluster is approximately 12.8 billion years old and provides new insights into galaxy formation.
Astronomers have discovered two 'galactic center chimneys' that funnel matter and energy away from the Milky Way's central black hole, which could provide clues about the rate of star production in other galaxies. The chimneys are linked to giant structures known as the Fermi bubbles, which straddle the galaxy's center.
Researchers have detected a radio signal from abundant interstellar dust in MACS0416_Y1, a galaxy 13.2 billion light-years away. This discovery forces scientists to rethink the history of star formation and suggests that the galaxy experienced staggered starburst periods.
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.
The Milky Way weighs approximately 1.5 trillion solar masses, with dark matter making up the majority of its mass. Globular star clusters were used to measure the galaxy's movement, providing a more accurate estimate of its mass.
Astronomers combined data from Hubble and Gaia to estimate Milky Way's mass, reducing uncertainty from decades of research. The galaxy is found to weigh approximately 1.5 trillion solar masses within a radius of 129,000 light-years.
Researchers used Keck Cosmic Web Imager to study DGSAT I, a solitary ultra-diffuse galaxy with unusual chemical composition. Its low iron content and normal magnesium levels contradict current theories on UDG formation, sparking new questions about galaxy origins.
Astronomers have created the first accurate 3D map of the Milky Way, revealing it is warped and twisted, with young stars in the outer regions.
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.
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.
A collision between the Milky Way and Large Magellanic Cloud is expected in 2 billion years, potentially waking up a dormant black hole. The event could eject the Solar System from the galaxy, although the impact on Earth is unlikely.
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.
Researchers discovered trans-galactic streamers flowing into the most luminous galaxy in the universe, W2246-0526. The galaxy is stripping away material from three smaller neighbors, which will fuel its star-forming activity for hundreds of millions of years.
Researchers have observed a powerful outflow of hydrogen gas from the Small Magellanic Cloud, indicating it may eventually stop forming new stars. The discovery provides insight into the evolution of galaxies and the potential source of gas for the enormous Magellanic Stream surrounding the Milky Way.
Researchers have observed two galaxy nuclei in close proximity to each other, providing a rare glimpse of supermassive black hole pairs. The study offers insights into the final stages of galaxy mergers and their role in shaping the evolution of massive black holes.
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 observed a powerful outflow of hydrogen gas from the Small Magellanic Cloud, a tiny dwarf galaxy. The discovery provides the first clear observational measurement of mass lost from a dwarf galaxy, shedding light on its slow death and potential impact on the surrounding Milky Way galaxy.
A team of UC Riverside-led scientists have made the best measurement yet of why star formation stops in galaxy clusters in the early universe. They found that it takes a galaxy longer to stop forming stars as the universe gets older, with quenching timescales varying across 70 percent of the universe's history.
Researchers developed a mathematical model describing motion of dark matter particles inside the smallest galaxy halos. They observed that over time, dark matter may form spherical droplets of quantum condensate. The study found that Bose-Einstein condensate can form in the centres of small halos, and it may produce Fast Radio Bursts.
A team of astronomers using Gaia data found twenty high-velocity stars racing towards the Galactic centre, raising questions about their origin. The stars' velocities could be a sign of supermassive black holes or binary systems in nearby galaxies.
The Gaia satellite has detected substructures in the Milky Way's star disk, indicating a 300-million-year-old gravitational disturbance caused by the Sagittarius Dwarf galaxy. Researchers used precise data to analyze shapes and twisting patterns, leading to new findings on galactic archaeology
A simulation by Georgia Institute of Technology researchers suggests that direct collapse black holes (DCBH) would produce specific kinds of intense radiation, including X-rays and ultraviolet emission. They also predict the formation of massive metal-free stars, a finding unexpected at first but making sense in hindsight.
Researchers suggest the Large Magellanic Cloud may have engulfed a third luminous galaxy, explaining why stars in the cloud rotate at different rates. This phenomenon could also help explain the 'age-gap' problem observed in the cloud, where there are very old and young star clusters.
Astronomers used the VLBA to study the effects on radio waves coming from a distant galaxy when an asteroid passed in front of it. They measured the size and shape of the asteroid, improving the accuracy of its orbital path calculation.
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.
Astronomers create highest resolution molecular gas map of 'monster' galaxy, COSMOS-AzTEC-1, 12.4 billion light years away. The map shows a massive, ordered gas disk in regular rotation, defying previous theoretical predictions.
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.
Chris Carr, an Ohio undergraduate, discovered a new galaxy 37 million lightyears away using deep sky images from the Burrell Schmidt telescope. The detection is part of the Leo I galaxy group and is considered the lowest surface brightness object ever detected via integrated light.
Calculations by Masafumi Noguchi confirm two-stage formation of Milky Way stars, with iron-rich stars forming after a gap in star birth. This discovery sheds light on the galaxy's dramatic history and provides insights into its 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.
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.
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.
Researchers at the University of Michigan have found a massive galaxy, M32p, in Andromeda's outer stellar halo, shedding light on the evolution and survival of disk galaxies. This discovery helps explain the formation of Andromeda's enigmatic M32 satellite galaxy.
A new online training platform is being developed to address the lack of bioinformatics and statistics knowledge among researchers in the life sciences. The Galaxy Europe project aims to provide interactive tutorials using real datasets, aiming to improve data science methods use.
The VERITAS array has confirmed the detection of high-energy gamma rays from a supermassive black hole located in a distant galaxy, TXS 0506+056. This detection is significant as it provides evidence that nearby and faraway galaxies with supermassive blackholes at their centers are actively creating high-energy cosmic rays.
An international team of scientists has found evidence of a far-distant source of high-energy particles called neutrinos, an energetic galaxy about 4 billion light years from Earth. The discovery was made using the IceCube Neutrino Observatory and confirms that this galaxy is a cosmic ray accelerator.
The Gaia Sausage refers to an ancient head-on collision between the Milky Way and a smaller dwarf galaxy, dubbed the Sausage galaxy. The impact, which occurred around 8-10 billion years ago, reshaped the galaxy's structure, forming its inner bulge and outer halo.
Volunteers in the Galaxy Zoo project develop extensive expertise about galaxy images and instruments, surprising researchers with their knowledge. Through online discussions, participants learn about artefacts and how to identify them, creating a culture of shared learning.
An international team confirms Albert Einstein's general theory of relativity by making the most precise test of gravity outside our solar system. By combining data from NASA's Hubble Space Telescope and the European Southern Observatory's Very Large Telescope, the researchers found that gravity behaves as predicted by GR on galactic s...
Researchers have found a rare galaxy, NGC 1277, that has remained unchanged since its formation in the early universe. The discovery provides valuable information about galaxy evolution, as it has preserved its original composition and structure over billions of years.
Researchers at the University of Colorado Boulder found that single activations of black holes occur more often in mismatched galaxy mergers, where one galaxy is huge and the other is puny. This is because violent collisions lead to less gas and dust falling onto black holes, making it less likely for two black holes to become active.
A new technique combines satellite galaxies' motions with computer simulations to estimate a galaxy's mass. The method yields more reliable results than previous methods, especially for large datasets generated by current and future surveys.
An international team of astronomers used ALMA to observe a distant galaxy called MACS1149-JD1, detecting ionised oxygen emitted 13.3 billion years ago. This signal indicates that even earlier generations of stars existed in the galaxy, pushing back the frontiers of the observable Universe.
Astronomers detected a faint signal of oxygen 13.28 billion light-years away using ALMA, indicating mature star formation in a young galaxy. The observation suggests stars formed 250 million years after the Big Bang.
Astronomers discover faint signal of oxygen in galaxy MACS1149-JD1, which is 13.28 billion light-years away and contains chemical maturity that suggests stars were forming as early as 250 million years after the Big Bang. This detection pushes back our understanding of cosmic dawn and the earliest phases of star formation.
A team of international astronomers has detected oxygen in a galaxy 13.28 billion light-years away, revealing that stars formed at an unexpectedly early stage in the universe's history. The discovery provides insight into the formation of galaxies and sheds light on the 'cosmic dawn' era.
Case Western Reserve University astronomers detected a massive cloud of ionized hydrogen gas spewed from a nearby galaxy and consumed by its central black hole. The discovery provides an unprecedented opportunity to study the behavior of a black hole and associated galaxy as it consumes and 'recycles' hydrogen gas.
Astronomers have observed a gargantuan cosmic collision of 14 young galaxies, poised to merge and form a colossal galaxy cluster. This protocluster is located 12.4 billion light-years away, offering an unprecedented opportunity to study the early stages of cluster formation.
Astronomers have observed gargantuan cosmic pileups, the impending collisions of young starburst galaxies, when the Universe was only half its current age. These ancient systems are thought to be building the most massive structures in the known Universe: galaxy clusters.
An international team found a fundamental law regulating galaxy cluster growth using gravitational lensing data from NASA's Hubble Space Telescope and Subaru Telescope. The law indicates that clusters are still growing by drawing surrounding substances with their strong gravity.
A new study suggests that galaxies similar to the Milky Way should host multiple supermassive black holes, as predicted by a state-of-the-art cosmological simulation. The wanderings of these black holes are unlikely to affect our solar system due to their vast distances and low accretion rates.
A new international study has found that galaxies grow bigger and more ordered with age, with stars moving in all directions. The research team measured the movement of stars in 843 galaxies using an instrument called SAMI on the Anglo-Australian Telescope.