Scientists confirm that dark matter dominates the total mass of our home galaxy, the Milky Way, through the Radial Velocity Experiment (RAVE) survey. The team aims to measure the speed, temperature, surface gravity and composition of up to a million stars passing near the sun.
Researchers searched for dwarf galaxies in nearby galaxy cloud using Two Micron All Sky Survey and Very Large Telescope. However, no stars were detected, suggesting alternative explanations for the missing galaxies.
Researchers discovered young super nebulae around giant star clusters, containing up to a million young stars, and emitting radiant power billions of times that of the sun. The discovery raises questions about why Milky Way no longer forms similar clusters after 10 billion years.
Astronomers have found a massive star cluster in the Milky Way, consisting of 14 supergiants with a total mass of at least 20,000 solar masses. This discovery may challenge existing massive star formation models and provides valuable insights into the evolution of these stars.
Researchers have charted a warp in the Milky Way's hydrogen gas layer, finding it vibrates like a drum due to interaction with dark matter. The Magellanic Clouds' passage through the dark matter halo creates a wake that enhances their gravitational influence on the disk.
Researchers at McMaster University have discovered 'light echoes' of ancient supernovae, providing a unique opportunity to study the original light from these events. This finding sheds new light on our understanding of the universe and its elements.
Cornell researchers study NGC 5291 system to understand tidal dwarf galaxies' properties. They find strong organic compound emission and warm molecular hydrogen in tidal dwarfs.
Astronomers recorded a massive star ejected from the Large Magellanic Cloud with speeds of over 2.6 million kilometers per hour. The high velocity suggests the presence of a massive black hole, which could be responsible for kicking the star out of its parent galaxy.
Researchers detected 'milky seas' in the northwest Indian Ocean using satellite data from the Defense Meteorological Satellite Program. The glowing waters were found to last at least three nights and span an area roughly the size of Connecticut, with boundaries matching surface ship reports.
Astronomers find massive stars forming close to super-massive black holes, challenging previous theories about their role in galaxy evolution. Researchers used Chandra X-ray Observatory data to study the Sagittarius A* (Sgr A*) star cluster near the Milky Way's central black hole.
The SALT Telescope will provide unparalleled views of the southern Milky Way and nearby galaxies like the Magellanic Clouds. The telescope's Prime Focus Imaging Spectrograph will capture high-resolution pictures and spectra, enabling scientists to study star formation and galaxy evolution.
Astronomers have conducted the most detailed survey of the Milky Way's inner regions to date, revealing a long stellar bar spanning 27,000 light years. The bar is oriented at about a 45-degree angle relative to the galaxy's center, providing new insights into the galaxy's structure and evolution.
Astronomer Nicolas Dauphas has refined the accuracy of the cosmic clock by comparing the decay of uranium-238 and thorium-232, estimating the age of the Milky Way at approximately 14.5 billion years, plus or minus 2 billion years.
Astronomers using Spitzer Space Telescope image a new generation of stars at the heads of huge dust pillars created by galactic weather conditions. The Carina Nebula, located 10,000 light years from Earth, is visible to the human eye and contains several dozen massive stars that shape the gigantic dust pillars.
Two astronomers have used NASA's Chandra X-ray Observatory to discover a shell of superheated gas around a dying star in the Milky Way galaxy. The study reveals how material ejected at two million miles per hour can heat previously ejected gas to emit X-rays, providing new insight into the persistence of such gas around dying stars.
A total of eight new VHE gamma-ray sources have been found in the Milky Way's disc, doubling known sources at these energies. The discovery includes two 'dark accelerators' without obvious counterparts in other wavelength bands, sparking excitement among astronomers.
An international team of astronomers has measured the motion of an entire galaxy in the sky using radio telescopes. The measurements show that the galaxy moves at a speed of 190 km/s relative to our Milky Way towards the Andromeda galaxy, and provide insights into the history and future evolution of the Milky Way.
A team of astronomers has discovered a remote galaxy cluster that is as massive as several thousand galaxies like our Milky Way and is located 9,000 million light-years away. The cluster contains reddish and elliptical galaxies with old stars, indicating it formed when the Universe was less than one third of its present age.
A Cornell University-led team has discovered a mysterious population of distant galaxies radiating in the infrared spectrum with hundreds of times more power than our Milky Way galaxy. The galaxies are thought to be ultraluminous infrared galaxies powered by massive starbursts or active galactic nuclei, and their discovery is published...
Astronomers have uncovered a population of infant stars in the Milky Way satellite galaxy, the Small Magellanic Cloud, using NASA/ESA Hubble Space Telescope images. The youngest stars are half the mass of our Sun and still forming from gravitationally collapsing gas clouds.
Astronomers discovered a dense stellar graveyard with thousands of X-ray sources within 70 light years of the Milky Way's center. The discovery supports the idea that dynamical friction could create a massive population of stellar-mass black holes.
Astronomers used computer simulations to predict that a close encounter between our Sun and another star in the Milky Way galaxy could have given us our solar system's edge and put small, alien worlds into distant orbits. The study found potential locations where captured objects from other solar systems might be found.
Astronomers confirm that the Virgo Cluster of galaxies is a highly non-uniform structure consisting of several subunits. The cluster's formation history can be studied using planetary nebulae stars, which trace the masses within the region. These findings provide new insights into the dynamic evolution of galaxy clusters.
Astronomers have detected high-energy gamma rays emanating from the center of the Milky Way galaxy, sparking debate about the nature of these mysterious emissions. The observation suggests a giant supernova explosion as the possible source, which could accelerate cosmic gamma rays to unprecedented energies.
Researchers analyzed tiny meteorite grains to determine the formation of aluminum oxide in AGB stars. The study found that both crystalline and amorphous forms are produced, clarifying observations and refining condensation modeling.
Researchers used ESO's Very Large Telescope to identify four massive elliptical galaxies at a redshift of 1.6-1.9, dating back to around 3,500 million years ago. These galaxies have ages between 1,000 and 2,000 million years and masses in excess of one hundred thousand million solar masses.
Researchers discovered two new aldehyde molecules, propanal and propenal, in an interstellar cloud near the Milky Way Galaxy. These findings provide insights into the formation chemistry of complex molecules in space.
CU researchers report consistent pattern in deuterium abundance, suggesting smaller amount of chemical evolution and higher infall of near primordial gas to the Milky Way galaxy. The findings provide a better understanding of galactic chemical evolution and its impact on the formation of stars, planets, and life.
Astronomers have observed features of nearby galaxy M33 using infrared pictures from NASA's Spitzer Space Telescope, revealing details hidden to the human eye. The galaxy is a gigantic laboratory where dust is created in novae and supernovae, being distributed in giant star winds and reborn in new stars.
Astronomers have discovered over 300 newly forming stars in a distant nebula, creating ideal conditions for the formation of new solar systems. The sheer number of objects is astounding, and may force us to rewrite our ideas of star formation and how much of it is going on in the Milky Way.
Astronomers successfully measured the size of Sagittarius A*, the mysterious object at the center of the Milky Way Galaxy, using the National Science Foundation's Very Long Baseline Array radio telescope. The black hole has a mass nearly four million times that of the Sun and would fit easily inside Earth's orbit.
A study suggests that debris from the gobbled-up Sagittarius dwarf galaxy may be 'smoking gun' for detecting dark matter's WIMPs. The combination of WIMPs from the Milky Way and Sagittarius could produce a distinct pattern on the DAMA detector, confirming their existence.
Researchers at Lehigh University discovered that the milky band on cloudy wineglasses is actually a network of microscopic scratches created during glass manufacturing. Repeated washings in the dishwasher can cause these cracks to spread and scatter light, giving the bowl a corroded appearance.
Astronomers detect near-infrared flares from hot gas falling into the black hole, revealing its rapid rotation and chaotic environment. The findings provide unprecedented information about what happens just outside the event horizon.
Astronomers have discovered four massive stellar clusters with stars as massive as 120 solar masses in the Milky Way's W49 molecular cloud. This reveals the true sources of enormous energy powering a giant HII region, solving decades of speculation.
Researchers have identified a population of globular star clusters drifting freely through the vast expanse of intergalactic space, revealing insights into the origins of these ancient structures. The discovery is thought to be the result of galaxy collisions or gravitational pulls that tore these star clusters from their parent galaxies.
A new 3D map of local space reveals the Sun at the center of an irregular cavity, surrounded by a dense wall of gas. The map suggests that interlocking cavities and tunnels were created by supernovas or strong stellar winds.
Scientists have found evidence of hot gases on the perimeter of the Coalsack, a cold dust cloud nearby the Milky Way. This discovery may help resolve debates about oxygen VI generation and provide new insights into star formation and galaxy energy production.
Researchers detected a sudden cooling of the star Rho Cassiopeiae in 2000, resulting in an unprecedented mass ejection into space. The star is now considered one of the brightest yellow hypergiants in the Milky Way, with a luminosity over half a million times that of the Sun.
The Sloan Digital Sky Survey has identified dozens of dim binary star systems throughout the Milky Way, which are older and cooler than previously thought. The study finds that these close-binary systems have a low rate of mass transfer from the red dwarf to the white dwarf, making them less likely targets for many telescopes.
A previously unseen band of stars beyond the edge of the Milky Way galaxy has been discovered, approximately 120,000 light years in diameter. The discovery supports the theory that at least part of our galaxy was formed by many smaller or dwarf galaxies mixing together.
Researchers at Ohio University have discovered a massive X-ray disk in an elliptical galaxy, revealing complex dynamics and challenging previous assumptions about galaxy formation. The giant disk is 90,000 light years wide and spinning through the galaxy, suggesting that elliptical galaxies may not be as simple as previously thought.
Researchers have obtained near-infrared images of the hot spots in radio galaxy 3C 445 using advanced instruments on the VLT ANTU telescope. The images show synchrotron emission associated with an intergalactic shock, providing evidence of cosmic accelerators far from the galaxy and its main jets.
Astronomers uncover a star with extremely low element abundance, providing a unique window into the Milky Way's early stages. The discovery challenges current theories and offers hope for finding 'unpolluted' Big Bang material.
A team of international astronomers has identified an ancient star in the Milky Way Galaxy, dated to 14-15 billion years ago. The discovery provides direct knowledge of the elemental composition of the universe shortly after the Big Bang, offering insights into the formation of stars and the chemical recipe of the early universe.
A team of UCSD researchers found that regular outbursts of ultraviolet radiation from massive stars may play a significant role in stirring up galaxies. The simulation study suggests that this radiation acts as an important regulation mechanism, inhibiting further star formation and regulating the galactic perturbations.
A star orbiting the massive Milky Way centre has been observed approaching the central black hole to within three times the distance between the Sun and Pluto. The new measurements provide conclusive evidence for the existence of a supermassive black hole at the centre of our galaxy.
Researchers tracked a star's orbit around a suspected black hole in the Milky Way, revealing its massive gravitational pull. The observation provides key evidence for the existence of a supermassive black hole at the galaxy's center.
Researchers observed supernova remnants in two neighboring galaxies, providing new insight into gas shocked by blast waves and material structure between stars. The findings expand our understanding of a star's long-term evolution and how elements are redistributed into interstellar space.
Scientists have discovered gold in an ancient star located 2,500 light years from Earth, providing significant insights into the formation of elements and the age of the Milky Way galaxy. The discovery was made using the Hubble Space Telescope and Keck Telescope, revealing the presence of other elements including thorium and uranium.
Researchers have identified new star structures in the halo of the Milky Way that could alter the standard model of the galaxy. The discovery was made using data from the Sloan Digital Sky Survey, a cataloging project that has imaged millions of stars.
Researchers have found evidence of turbulence and thick gas in the Magellanic Stream, a vast river of hydrogen flowing into the Milky Way galaxy. This discovery could provide new insights into cosmic cloud and star formation processes, as well as the billion-year evolution of galaxies.
Astronomers have detected X-ray radiation from the Milky Way’s center for over two decades, but the origin remained a mystery due to poor resolution. The new image reveals individual X-ray sources and hot gas, leading scientists to conclude that most high-energy radiation comes from white dwarf stars, neutron stars, and black holes.
Researchers combined infrared images with Hubble data to study ancient galaxies, including those similar to the Milky Way. The team identified over 100 billion stars in some galaxies, offering insights into their age, distance, and formation.
Researchers have detected a massive compact halo object, or MACHO, using gravitational microlensing event data from the Hubble Space Telescope and European Southern Observatory's Very Large Telescope. The object is estimated to be 5-10% the mass of the sun and is thought to comprise up to 50% of the Milky Way's dark matter content.
Researchers from the Lawrence Livermore National Laboratory have detected a dark matter object in the Milky Way using microlensing light data and spectroscopy. The team measured the mass, distance, and velocity of the MACHO, a small star with a mass between 5% and 10% of the sun's mass at a distance of 600 light-years.
A team of astronomers has directly observed a Dark Matter object, confirming the theory that it consists of small, faint stars in galaxies like our Milky Way. The detection was made using the Hubble Space Telescope and the European Southern Observatory's Very Large Telescope.
An international team of astronomers has discovered a very massive stellar black hole in the Milky Way Galaxy, weighing 14 times more than our Sun. The black hole is located in the binary system GRS 1915+105 and feeds on a low-mass star through a steady flow of stellar material.
A massive star's remnant is discovered in the Milky Way galaxy, moving at an incredible speed of 300,000 miles per hour. The black hole, called XTE J1118+480, was gravitationally ejected from a globular cluster and has consumed its companion star.
A team of scientists led by Leisa Townsley has found evidence of X-ray-emitting gas in the Rosette Nebula, a star-forming region. This gas is thought to be created by the collision of stellar winds from massive stars and may play a significant role in shaping the galaxy's interstellar medium.