Astronomers using the VLBA have directly measured the distance to a star-forming region on the opposite side of the Milky Way, nearly doubling the previous record. This achievement allows for the accurate mapping of the Galaxy's structure and spiral arms.
A team of astronomers successfully traced a spiral arm on the far side of our Galaxy using radio interferometry and parallax measurements. They located the Scutum-Centaurus spiral arm as it passes around the far side and verified a new method to infer distances in this region.
Researchers found that atomic hydrogen makes up a majority of gas in younger galaxies, contradicting expectations. This discovery has significant implications for our understanding of the early Universe and the role of cold gas in star formation.
Researchers used historic accounts and modern methods to describe an extreme magnetic storm over Kyoto in the 18th century. The study provides valuable insights into past solar activity and its potential impact on future events.
A decade-long study by the Pierre Auger Collaboration has found six percent greater rate of extragalactic cosmic rays from one side of sky than other, suggesting acceleration sites are outside Milky Way. The observatory's detection provides compelling evidence for extragalactic origin of ultra-high energy cosmic particles.
A new study reveals that ultra-high-energy cosmic rays come from galaxies far beyond our own Milky Way galaxy. The Pierre Auger Observatory's data analysis shows that these particles favor a specific direction, suggesting an extragalactic origin.
A study published in Science confirms that the highest energy cosmic rays bombard the Earth come from outside the Milky Way Galaxy. The Pierre Auger Observatory collected data from 12 years, revealing an anisotropy in the distribution of arrival directions of cosmic particles.
Researchers at Niels Bohr Institute used computer simulations to study the influence of local environmental conditions on star formation. Their findings suggest that factors such as magnetic fields and turbulence play a crucial role in shaping the star formation process.
Astronomers observe magnetic field of a galaxy 5 billion light-years away, finding a similar strength and configuration to the Milky Way's. This suggests galactic magnetic fields form early in a galaxy's life and remain relatively stable.
Researchers from University of California, Irvine estimate tens of millions of stellar-remnant black holes exist in the Milky Way galaxy. The number of black holes is expected to depend on the size of the galaxy.
A team of scientists has calculated the distribution of all light energy contained within the Milky Way, providing insight into galaxy formation and stellar processes. The research shows how stellar photons control gamma-ray production in the Universe.
Researchers at Northwestern University discovered that up to half of the Milky Way's matter may have originated from distant galaxies through intergalactic transfer. This phenomenon, identified in simulations, shows that gas flows from smaller galaxies to larger ones, such as the Milky Way, forming stars.
A team of scientists from Instituto de Astrofísica de Canarias discovered a very distant galaxy, some 10 thousand million light years away, about a thousand times brighter than the Milky Way. The galaxy is notable for having a high rate of star formation, forming stars at a rate of 1000 solar masses per year.
Located close to the Milky Way, IC 342 is a sweeping spiral galaxy with an active core. The Hubble Space Telescope image reveals a mixture of hot star-forming regions, cooler gas, and dark dust lanes around the bright core, indicating the presence of ionized hydrogen.
An international team of astronomers suggests that the Milky Way contains a staggering number of brown dwarfs, with estimates ranging from 25 to 100 billion. The Substellar Objects in Nearby Young Clusters (SONYC) survey found that brown dwarfs are common in dense star clusters and have a small effect on their formation environment.
Astronomers found that the fastest-moving stars in the Milky Way originated in the Large Magellanic Cloud, a dwarf galaxy in orbit around our own. Computer simulations and data analysis showed that these stars were ejected from their original home at incredible speeds.
Astronomers have spotted a rare opportunity to study the demise of a dwarf galaxy called Little Cub, which is being consumed by a gigantic neighbouring galaxy. The process provides clues about how smaller galaxies lose their gas and eventually shut down star formation.
Researchers propose a theory that predicts dark matter annihilation rates vary by galaxy size and time. This study suggests dark matter could consist of multiple particles interacting through a yet-undiscovered low-mass particle.
A team of scientists has detected a rotating stellar disk in the ancient elliptical-shaped galaxy MACS2129-1, located 10 billion light-years from Earth. This finding contradicts prevailing astrophysical theory regarding the formation of such galaxies shortly after the Big Bang. The stars in MACS2129-1 rotate at a speed of over 500 km p...
The University of Zurich has simulated a gigantic catalogue of 25 billion virtual galaxies from 2 trillion digital particles using the revolutionary code PKDGRAV3. This simulation will help optimize the observational strategy of the Euclid satellite, which aims to investigate dark matter and dark energy.
Astronomers have captured unique close-up views of the universe's brightest infrared galaxies, which are as much as 10,000 times more luminous than our Milky Way. The galaxies' star-birth production is 5,000 to 10,000 times higher than that of our Milky Way.
The omentum, a layer of fat over intestines, liver, and stomach, has immune functions and secretes hormones related to obesity. It also plays a role in cancer development, serving as a breeding ground for aggressive tumors.
A team of astronomers discovered a new kind of galaxy that formed less than a billion years after the Big Bang, creating stars more than 100 times faster than our Milky Way. This find solves a long-standing puzzle of how massive galaxies came to have hundreds of billions of stars when they formed so quickly.
Researchers have discovered and characterized 82 massive binary star systems in the Tarantula Nebula, a satellite galaxy of the Milky Way. The study provides new insights into the properties of these systems, which are expected to play a crucial role in shaping the chemical evolution of the universe.
Researchers at University of Arizona discover diffuse hydrogen gas surrounding Milky Way, accounting for large part of galaxy's baryonic mass. This finding confirms predictions from simulations and provides new insights into the nature of dark matter.
Researchers have used archival data from NASA's New Horizons mission to measure visible light from other galaxies, giving an upper limit to the amount of light in the cosmic optical background. The findings offer promise for future astronomy measurements from the outer solar system.
A new RIT study confirms the coexistence of satellite galaxies and dark matter, shedding light on a long-standing debate. The research supports the current cosmological paradigm by showing that the vast polar structure of dwarf galaxies is an unstable feature that formed later in the galaxy's evolution.
Researchers directly observed two Milky Way-like galaxies when the universe was eight percent of its current age, surrounded by massive hydrogen gas halos. The galaxies are forming stars at moderate rates and already rotating, similar to today's giant spiral galaxies.
Astronomers have developed a way to detect the ultraviolet (UV) background of the Universe, which could help explain why there are so few small galaxies in the cosmos. The UV radiation strips smaller galaxies of the gas needed to form stars, effectively stunting their growth.
Astronomers have found evidence of a star that whips around a likely black hole twice an hour, marking the tightest orbital dance ever seen by a black hole and a companion star in our own Milky Way galaxy. The stellar couple is located in the globular cluster 47 Tucanae, about 14,800 light years away from Earth.
Fermi data reveals concentrated gamma rays at Andromeda's center, sparking speculation about dark matter. The unusual distribution may be caused by unknown sources or the presence of dark matter.
Astronomers have discovered a rare pulsating delta Scuti star 7,000 light years away in the Pegasus constellation. The star's unique pattern of expansion and contraction every 2.5 hours is the result of its heating and cooling hydrogen fuel at its core.
Scientists suggest a global network of cell phones or small radio receivers could 'hear' nearby Fast Radio Bursts (FRBs). A free smartphone app could monitor appropriate frequencies, sending data to a central facility.
Researchers use Gaia data to detect pulsating stars and trace the extent of the Large Magellanic Cloud, revealing a fuzzy halo stretching 20 degrees from its center. The discovery provides insights into the clouds' mass and interaction with the Milky Way, shedding light on their role in galaxy formation.
Astronomers detected a compact molecular cloud with unusual motion near the supernova remnant W44, suggesting the presence of a hidden black hole. The black hole is estimated to be between 3.5 and 36 times more massive than the sun, sparking debate over its origin.
A new study confirms that galaxies are being pushed away from a previously unknown region of low density, called the Dipole Repeller. This region exerts a repelling force on our Local Group of galaxies, suggesting that push and pull forces are equally important.
The galaxy RX J1140.1+0307 has a supermassive black hole with one of the lowest known masses, yet its emission spectrum cannot be explained by current models. Scientists believe other mechanisms are at play in the interactions between the inner and outer parts of the accretion disk surrounding the black hole.
New research reveals that the Milky Way's black hole can create hundreds of planet-mass objects, which are then flung throughout the galaxy. These objects, known as 'spitballs,' could be detected by future telescopes and may pose a challenge to distinguish from free-floating planets.
Astronomers have discovered giant halos of scattered photons around early Milky Way type galaxies, indicating that only a small percentage of light emitted by distant stars can escape these galaxies. The study uses the Isaac Newton Telescope to survey almost 1000 distant galaxies and measures the amount and location of Lyman-alpha phot...
Scientists develop rigorous new method for modeling the accretion disk that feeds the supermassive black hole at the center of the Milky Way galaxy. This approach replaces traditional formulas with a kinetic method to trace collisionless particles, improving understanding of plasma behavior and radiative efficiency.
A team of astronomers from ANU has found a massive galaxy supercluster near the Milky Way, which influences the motion of our Galaxy. The Vela supercluster is one of the largest concentrations of galaxies in the Universe, and further studies will confirm its size.
Researchers from the Niels Bohr Institute have recreated characteristics of ultra-diffuse faint galaxies using computer simulations. The study reveals that supernovae explosions during star formation can push stars and dark matter outwards, causing galaxies to expand and become faint.
Astronomers have found an extremely faint dwarf satellite galaxy, Virgo I, located 280,000 light years from the Sun. The discovery suggests hundreds of yet-undetected dwarf satellites in the halo of the Milky Way.
Researchers found a dozen previously unknown RR Lyrae stars at the center of the Milky Way, indicating that galactic bulges may have formed through merging ancient globular clusters. The discovery provides strong evidence for an important theory of galactic evolution.
Theoretical modeling work resolves debates on dwarf galaxy formation by accurately predicting their properties. The new simulation brings theoretical predictions into better agreement with observations of dwarf galaxies surrounding the Milky Way.
Researchers used colors to identify the ages of over 130,000 stars in the Milky Way's halo, revealing a clear hierarchy with oldest stars at the center and younger ones further away. The study supports a hierarchical model of galaxy formation, suggesting that small mini-halos merged to form the Milky Way.
Researchers have identified a young star over 30 times the mass of our Sun, which could help us understand how massive stars are formed. The discovery suggests that massive stars form in a similar way to smaller stars like our Sun.
An international team of astronomers has found a huge region around the centre of the Milky Way devoid of young stars, indicating a lack of star formation. This 'Cepheid desert' stretches for thousands of light years and challenges our understanding of the Galaxy's formation and evolution.
Astronomers have reclassified UGC 1382 as a colossal Giant Low Surface Brightness disk galaxy that rivals Malin 1 in size, with spiral arms visible in ultraviolet light. The galaxy is about 7 times the diameter of the Milky Way and has similar amounts of stars and gas to Malin 1.
Researchers found a clandestine black hole, VLA J2130+12, within the Milky Way galaxy, which is about five times closer to Earth than previously thought. This black hole is pulling in material from a companion star at a very slow rate, making it nearly undetectable.
Researchers have detected a chiral molecule called propylene oxide in Sagittarius B2 North, a cloud of gas and dust in the Milky Way galaxy. This discovery sheds light on the origin of homochirality on Earth, which is a phenomenon where life forms predominantly use left-handed molecules.
The new atlas documents the world's level of artificial skyglow, affecting nocturnal organisms and ecosystems. The study found that Italy and South Korea have the most polluted skies, while Canada and Australia have the least, with residents in India and Germany being more likely to see the Milky Way.
A new global atlas reveals that the Milky Way is only visible from 33% of the world's population, with 80% of Americans experiencing light-polluted nights. This widespread issue affects not only human connections to nature but also confuses wildlife and exposes them to fatal consequences.
New computer simulations from Georgia Tech investigate the possibility that red giant stars were dimmed after collisions with a gaseous accretion disk at the galactic center. The simulations suggest that these collisions could have caused significant damage to the red giant stars, stripping away mass and lowering their kinetic energy.
Researchers from the University of Birmingham detected resonant acoustic oscillations in 'M4', a 13 billion-year-old star cluster, using data from NASA's Kepler/K2 mission. This breakthrough enables asteroseismology to study the Milky Way's very early history.
PhD candidate Gwendolyn Eadie has developed a method to estimate the mass of the Milky Way using globular cluster velocities. This approach predicts the mass contained within any distance from the center of the galaxy, providing new insights into the dark matter component.
Researchers found that hot dust in the distant universe is often caused by three or four galaxies instead of a single one. This study applied statistical methods to data from the Herschel Space Observatory and dropped the number of stars these galaxies have to be producing by a third.
Researchers use ALMA to accurately measure the mass of a supermassive black hole at the center of galaxy NGC 1332, shedding light on how galaxies and their black holes form. The findings suggest a coordinated growth between galaxies and their central black holes.
The HAWC Gamma-ray Observatory has released a new survey of the sky made from the highest energy gamma rays ever observed, revealing new high-energy sources within our own Milky Way galaxy. The observatory has also provided more detail on known sources, offering a deeper understanding of high-energy processes taking place in our galaxy...
Astronomers used Hubble to study the Milky Way's nuclear star cluster, discovering a rich tapestry of over half a million stars. The cluster surrounds the galaxy's central supermassive black hole and offers insights into its formation.