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.
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.
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.
Dr. Frank Schröder will search for high-energy photons accompanying cosmic rays using a novel radio measurement technique. He aims to find the highest-energy photons ever measured at an Antarctic location.
Astronomer Daniel Wang will collaborate with Jorge Cuadra in Chile to study the massive black hole at the center of the Milky Way, aiming to understand its interactions with the galactic ecosystem. This research has significant implications for our understanding of galaxy-wide properties and astrophysical processes.
Astronomers at Georgia State University have discovered a thin gap on the Hertzsprung-Russell Diagram, indicating where stars transition from being larger and mostly convective to smaller and fully convective. This finding reveals information about the interior structures of low-mass stars in the Milky Way Galaxy.
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.
HaloSat mission aims to search for the universe's missing matter by studying X-rays from hot gas surrounding the Milky Way galaxy. The satellite will help determine if the diffuse galactic halo is shaped more like a fried egg or a sphere, which will impact our understanding of the universe's mass and composition.
Astrophysicists have localized a high-energy cosmic neutrino originating outside the Milky Way to a blazar in the Orion constellation using MAGIC telescopes and IceCube detector. The observation provides insight into the origin of cosmic rays, which are believed to be accelerated by protons in the blazar's jets.
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.
Researchers estimate that the Milky Way contains about 10 billion trillion trillion tonnes of greasy matter, equivalent to 40 trillion trillion trillion packs of butter. The discovery could have implications for understanding the origins of life in the universe.
Researchers use computer simulations to test dark matter's presence in satellite galaxies, finding a relationship that could clarify its existence. The study uses radial acceleration relation data from the Gaia spacecraft to make predictions about the behavior of dwarf galaxies.
A team of astrophysicists propose a new model for the formation of globular clusters and supermassive stars. They suggest that a runaway collision process between densely packed stars in globular clusters could form a supermassive star, explaining the unusual chemical elements found in these clusters.
Researchers found relics of merger events in the Milky Way halo using Gaia Data Release 2. Five small clusters and a large 'blob' of stars indicate massive and smaller merger events shaped the galaxy. This study provides insights into the Milky Way's evolution, with further analysis to reveal more about its formation.
A team of researchers at Cardiff University has discovered that tiny crystals of carbon, nanodiamonds, are likely the source of a mysterious microwave glow emanating from star systems in the Milky Way. The discovery was made by studying infrared light from protoplanetary disks surrounding newly formed stars.
Astronomers identify hydrogenated nanodiamonds as likely source of anomalous microwave emission (AME), a type of faint microwave light emanating from regions across the Milky Way. The discovery provides new insights into the formation of nanodiamonds in protoplanetary disks and has implications for cosmology research.
New research led by the University of Warwick has found that globular clusters may be only around 9 billion years old, revised from their previous age of 13 billion. The discovery brings into question current theories on how galaxies, including the Milky Way, were formed.
Researchers observed radio waves to measure carbon monoxide gas in distant galaxies, revealing that stars born during intense starbursts are massive. The findings challenge classical ideas about star formation and galaxy evolution over cosmic time.
A new study predicts that LISA will detect dozens of binaries in the Milky Way's globular clusters, containing various compact object combinations. This will expand the breadth of the gravitational wave spectrum, allowing for exploration of different types of objects not observable with LIGO.
Astronomers have observed a colossal cluster of galaxies for the first time, containing at least 14 galaxies packed into an area four times the diameter of the Milky Way's galactic disk. The cluster is churning out stars at an incredible pace, with rates ranging from 50 to 1,000 times higher than expected for solitary galaxies.
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.
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.
Astronomers have revealed the 'DNA' of over 340,000 stars in the Milky Way, tracing their ancestry and composition. The GALAH survey aims to make DNA matches between stars to find long-lost sisters and brothers of the Sun.
Astronomers have discovered an isolated neutron star with low magnetic field located beyond our Milky Way galaxy using the MUSE instrument on ESO's Very Large Telescope in Chile. The neutron star is surrounded by a ring of gas that includes neon and oxygen.
A study led by Columbia University astrophysicists has found a dozen black holes gathered around Sagittarius A*, the supermassive black hole at the center of the Milky Way Galaxy. The discovery confirms a major theory and opens up new opportunities to understand the universe.
Researchers used Subaru telescope in Hawaii and Isaac Newton telescope in Canary Islands to create 3D map of universe's first 16 billion years. The team found nearly 4000 early galaxies, many of which may have evolved into Milky Way-like galaxies. These discoveries provide crucial information about early phases of galaxy formation.
A new age-map of the Milky Way's center shows that a period of star formation lasting around 4 billion years created the complex structure. The map, produced by an international team, combines data from millions of stars and spectroscopic surveys, revealing that the bar-shaped structure was formed about 7 billion years ago.
A team of astronomers has found that galaxies like the Milky Way are slowly increasing in size due to star formation on their outskirts. The study, led by Cristina Martínez-Lombilla, reveals a growth rate of around 500 meters per second, which is fast enough to cover the distance from Liverpool to London in about twelve minutes.
Researchers discovered a unique galaxy, NGC 1052-DF2, lacking most of its dark matter. The galaxy is as large as the Milky Way but contains only 1/200th the number of stars, leading to its classification as an ultra-diffuse galaxy.
A team of scientists has discovered that rocks round up in the same way regardless of their origin, with a common process guiding their shape evolution. By combining mathematical models and laboratory experiments, the researchers found that collisions between particles favor the chipping off of small sediment fragments.
Scientists have found a unique galaxy that contains almost no dark matter, a finding that challenges the standard ideas of how galaxies work. The galaxy, called NGC1052-DF2, has a mass similar to that of the Milky Way but only a fraction of the expected dark matter.
The Water Recovery X-ray rocket, WRX, will test a newly-developed X-ray spectrograph and study the X-rays from a supernova remnant in the Milky Way galaxy. The mission will provide information about the conditions in the Vela supernova remnant, including temperature, density, chemical composition, and ionization state.
Researchers at University of Wisconsin-Madison used Hubble Space Telescope to analyze Leading Arm of Magellanic Stream, identifying it as coming from Small Magellanic Cloud. The study helps refine models of galaxy orbit and formation, shedding light on mysterious gas clouds surrounding Milky Way.
The Hubble Space Telescope has discovered a rare relic galaxy, NGC 1277, that remains unchanged for the past 10 billion years. This unique find provides valuable insights into the origin and evolution of galaxies billions of years ago.
A team of astronomers discovered that some stars in the Galactic halo are former residents of the Galactic disk, kicked out by invading dwarf galaxies. This finding confirms a new understanding of the Milky Way's history and future, revealing a complex interplay between galaxy interactions.
Astronomers have created the first high-resolution map of magnetic field lines around a black hole at the center of our galaxy. The map, produced using CanariCam infrared camera, reveals intricate details about gas and dust swirling around the supermassive black hole.
Researchers found that the chemical compositions of halo stars match those of outer disk stars, suggesting they originated from the galaxy's own disk. This discovery reveals a more complex dynamics of the Milky Way, indicating that groups of stars in the disk can be relocated to distant realms within the galaxy.
Astronomers discover halo structures in Milky Way, finding chemical compositions matching those of the Galactic disk. Theories suggest oscillations of the disk as a whole may have relocated these stars to extreme positions.
A team led by Professor Pat Roche created the first high-resolution map of magnetic field lines in gas and dust swirling around a supermassive black hole at the centre of our Galaxy. The map shows intense infrared light and magnetic field lines within filaments of warm dust grains and hot gas, revealing their intricate relationship.
Researchers used spectroscopic measurements to confirm S0-2 has no significant companion, simplifying the upcoming gravity test. The discovery sheds light on the formation of young stars near the supermassive black hole at the center of the Milky Way galaxy.
Researchers have discovered that the Milky Way and Andromeda galaxies are roughly the same size, with Andromeda being 800 billion times heavier than the Sun. This finding challenges previous estimates of dark matter in the Andromeda galaxy and suggests that scientists may need to revise their understanding of the local group.
Researchers detected objects in extragalactic galaxies with masses ranging from the Moon to Jupiter using microlensing. The discovery marks the first time planets have been found outside the Milky Way galaxy.
A team of astronomers from the University of Basel has found that satellite galaxies around Centaurus A co-rotate within disc-shaped planes, a phenomenon that challenges the standard model of cosmology. This discovery suggests that these systems are not isolated cases but part of a widespread pattern.
A new international study has found a plane of dwarf galaxies orbiting around Centaurus A, challenging a long-held theory that these galaxies are spread out in all directions. The research reveals that spinning pancake-like systems of satellite galaxies are more common than previously thought.
An international team of astronomers has discovered a galactic arrangement where dwarf satellite galaxies orbit the main body in a narrow disk around Centaurus A. This finding contradicts commonly used cosmological models and simulations.
Researchers at the IAC have identified a star with minimal heavy elements, providing insights into the formation of the Galaxy's first chemical elements. The star, located 7,500 light years from Earth, has a surface temperature of 400 degrees hotter than the Sun.
A team of astrophysicists has created a map with 300 galaxies close to the Milky Way, classified based on stellar motion rather than morphological characteristics. The study reveals that circular orbits are common in lower mass galaxies, while 'hot orbits' are more frequent in higher mass galaxies.
An international team of astrophysicists has provided the first clue to the speed of dark matter, finding that it matches the movement of the least heavy metal-rich stars. This breakthrough could help shed light on why direct detection experiments have failed to detect dark matter particles.
The discovery of benzonitrile marks a significant milestone in understanding the source of the Milky Way's mysterious infrared glow. The detection provides chemical breadcrumbs from simple molecules to larger PAHs, shedding light on their ubiquity in interstellar space.
The Dark Energy Survey has publicly released its first three years of data, containing information on 400 million astronomical objects, including distant galaxies and stars in the Milky Way. The dataset also reveals 11 new stellar streams, remnants of smaller galaxies torn apart by the Milky Way.
The discovery of eleven new stellar streams in the Milky Way confirms its role as a cosmic melting pot, with stars originating from other galaxies. The Dark Energy Survey data, made publicly available, enabled the detection of these streams, which provide evidence for the galaxy's history of migration events.
Researchers have discovered swirling gas motion in early galaxies, which spun like a whirlpool similar to the Milky Way. The galaxies, observed nearly 13 billion years ago, were found to be forming stars at a higher rate than expected, yet retaining order and appearing well-regulated despite their small size.
Astronomers have developed a novel method to measure the masses of solitary stars with an accuracy of 10-25 percent. This technique combines light fluctuations and parallax data to infer surface gravity and diameter, providing critical information for understanding star formation, evolution, and planetary systems.
Australian scientist Dr. Tobias Westmeier has created the most detailed map ever of high-velocity gas clouds in the Universe, revealing over 13% of the sky is covered by these mysterious clouds. The map shows gas clouds moving at speeds of up to a few hundred kilometers per second and provides new clues about their origin.
Astronomers have discovered eleven low-mass protostars forming close to the Milky Way's supermassive black hole, defying predictions of hostile environment. These newly formed stars are about 6,000 years old and represent the earliest phase of star formation in this highly turbulent region.
Researchers combined Hubble and Gaia data to measure the proper motion of 15 stars in the Sculptor Galaxy, revealing an unexpected preference in direction. The findings question current models of dark matter halos, suggesting that assumptions on star populations may be invalid.
Astronomers used Hubble and Gaia data to directly measure the 3D motions of stars in the Sculptor Dwarf Galaxy, achieving accuracy better than previous measurements. The results provide insights into dark matter distribution and test the cosmological model.
A team of astronomers from Georgia State University has discovered two old binary stars and identified 29 new old star candidates using a technique called astrometry. The study focused on subdwarf stars, which are cooler and older than the sun, and used their motion across the sky to determine their age.
Using ALMA's unparalleled sensitivity and resolution, the team identified eight massive dusty clouds along the center of the galaxy, each with a unique chemical signature. The clouds are thought to be aggregates of dense, warm cocoons around young stars, driving complex chemical reactions and molecule formation.
The Pierre Auger Observatory detects a large-scale anisotropy in the arrival directions of cosmic rays above 8×10^18 eV, indicating their extragalactic origin. Researchers believe the source region may be located near the Milky Way galaxy.