Galaxies
How does our Milky Way galaxy get its spiral form?  PHYS.ORG · 18 hours
A question that has long puzzled scientists is how our Milky Way galaxy which has an elegant spiral shape with long arms, took this form. more
Free-Floating Planet-Mass Objects are Common in Galaxies  SCI-NEWS.COM · 2 days
Using a technique called quasar microlensing, a team of astronomers at the University of Oklahoma has detected populations of free-floating planet-mass objects... more
Gemini North Telescope Captures Stunning Galaxy Collision  SCI-NEWS.COM · 2 days
Astronomers working at the NSF-supported Gemini Observatory have captured a new photo of interacting spiral galaxies NGC 5394 and NGC 5395, collectively... more
Image: Hubble views galaxy's dazzling display  PHYS.ORG · 2 days
NGC 3175 is located around 50 million light-years away in the constellation of Antlia (the Air Pump). The galaxy can be seen slicing across the frame in this image from the NASA/ESA Hubble Space Telescope, with... more
Researchers estimate the mass of the Milky Way to be 890 billion times that of our sun  PHYS.ORG · 2 days
An international team of researchers has used sophisticated models to calculate the mass of... more
Astronomers discover two new galaxy protoclusters  PHYS.ORG · 2 days
Using Keck Observatory in Hawaii, astronomers have detected two new protoclusters of galaxies embedded in primordial superclusters. The research paper presenting the discovery and providing basic information about the newfound objects was published December 3 on... more
A galactic dance  nanowerk · 2 days
Galaxies lead a graceful existence on cosmic timescales. Over millions of years, they can engage in elaborate dances that produce some of Nature's most exquisite and striking grand designs. Few are as captivating as the galactic duo known as NGC... more
Image: The galactic dance of NGC 5394 and NGC 5395  PHYS.ORG · 2 days
"Everything is determined by forces over which we have no control... Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune, intoned in the distance... more
Annihilating Dark Matter May Lurk in Milky Way’s Center  SCI-NEWS.COM · 3 days
Gamma rays — the most energetic waves in the electromagnetic spectrum — are typically produced by the hottest,... more
Research group confirm planet-mass objects in extragalactic systems  PHYS.ORG · 3 days
A University of Oklahoma research group is reporting the detection of extragalactic planet-mass objects in a second and third galaxy beyond the Milky Way after the first detection in 2018. With the... more
Planet-mass objects in extragalactic systems  SCIENCE DAILY · 3 days
A research group is reporting the detection of extragalactic planet-mass objects in a second and third galaxy beyond the Milky Way after the first detection in 2018. With the existing observational resources, it is impossible to directly detect... more
Astronomers confirm planet-mass objects in extragalactic systems  nanowerk · 3 days
Astronomers are reporting the detection of extragalactic planet-mass objects in a second and third galaxy beyond the Milky Way after the first detection in 2018. With the existing observational resources, it is impossible to... more
Merging Pair of Dusty Star-Forming Galaxies Spotted 13 Billion Light-Years Away  SCI-NEWS.COM · 3 days
Using the Atacama Large Millimeter/submillimeter Array (ALMA), an international team of astronomers has spotted... more
Best of Last Year: The top Phys.org articles of 2019  PHYS.ORG · 3 days
It was a great year for research of all kinds as a team of astronomers from around the globe delivered the first photo of a black hole. Over... more
Is there dark matter at the center of the Milky Way?  PHYS.ORG · 3 days
MIT physicists are reigniting the possibility, which they previously had snuffed out, that a bright burst of gamma rays at the center of our galaxy may... more
ALMA spots most distant dusty galaxy hidden in plain sight  SCIENCE DAILY · 4 days
Astronomers have spotted the light of a massive galaxy seen only 970 million years after the Big Bang. This galaxy, called MAMBO-9, is the most distant dusty star-forming... more
Astronomers spot most distant dusty galaxy hidden in plain sight  nanowerk · 4 days
Astronomers have spotted the light of a massive galaxy seen only 970 million years after the Big Bang. This galaxy, called MAMBO-9, is the most distant dusty star-forming... more
Is there dark matter at the center of the Milky Way?  nanowerk · 4 days
A new analysis puts dark matter back in the game as a possible source of energy excess at the galactic center. more
ALMA spots most distant dusty galaxy hidden in plain sight  PHYS.ORG · 4 days
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have spotted the light of a massive galaxy seen only 970 million years after the Big Bang. This galaxy, called... more
Magnetic Fields Play Important Role in Shaping Spiral Galaxies  SCI-NEWS.COM · 4 days
New infrared observations from NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA) of Messier 77, a spiral galaxy located... more
A new way to measure cosmic black holes  PHYS.ORG · 4 days
Supermassive black holes are the largest black holes, with masses that can exceed a billion Suns. Just this spring, the first-ever image of the supermassive black hole at the center of the... more
Second stellar population found in Milky Way's thick disk  PHYS.ORG · 4 days
A new study on the kinematics and chemical composition of a sample of stars in the vicinity of the sun, led by Dr. Daniela Carollo, researcher of the Italian National... more
Is there dark matter at the center of the Milky Way?  MIT · 4 days
A new analysis puts dark matter back in the game as a possible source of energy excess at the galactic center. more
Astronomers find further evidence for a population of dark matter deficient dwarf galaxies  nanowerk · 6 days
Astronomers have found a special population of dwarf galaxies that could mainly consist baryons within radii of up to tens of thousands... more
Image: Hubble spots galaxy's dramatic details  PHYS.ORG · 6 days
Some of the most dramatic events in the universe occur when certain stars die—and explode catastrophically in the process. more
SN Now: The final installment of SCaN Now  PHYS.ORG · 6 days
NASA satellites, no matter the destination, have to communicate their data to mission control and scientists on Earth. These missions capture extraordinary data that make communications an essential part of each mission:... more
IRAS 18379–1707 is a metal-poor high-velocity star, observations find  PHYS.ORG · 6 days
Astronomers have conducted high-resolution spectroscopic observations of IRAS 18379–1707 (or LS 5112), a candidate post-asymptotic giant branch (post-AGB) star in the Milky Way galaxy. Results of the observations provide more... more
Supermassive Black Hole Triggers Star Formation in Multiple Galaxies  SCI-NEWS.COM · 1 week
Enormous black holes usually affect their surroundings through the so-called ‘negative feedback’ — in other words, suppressing the... more
Scientists have found out why photons from other galaxies do not reach Earth  PHYS.ORG · 2 weeks
An international group of scientists, including Andrey Savelyev, associate professor of the Institute of Physical and Mathematical Sciences and Information Technologies of... more
Unusual X-ray spectral variability observed in NGC 1313 X-1  PHYS.ORG · 2 weeks
An ultraluminous X-ray source (ULX) in the NGC 1313 galaxy, known as NGC 1313 X-1, showcases an unusual X-ray spectral variability, according to a new study recently conducted by an... more
19 Galaxies Are Apparently Missing Dark Matter. No One Knows Why.  LIVE SCIENCE · 2 weeks
Nineteen newly discovered dwarf galaxies seem to be missing their dark matter, and physicists aren't sure why. more
Hoag's Object Is a Galaxy Within a Galaxy Within a Galaxy (and Nobody Knows Why)  LIVE SCIENCE · 2 weeks
Hoag's object, which is a galaxy within a galaxy within a galaxy, has befuddled stargazers since astronomer Arthur... more
Black hole or newborn stars? SOFIA finds galactic puzzle  PHYS.ORG · 2 weeks
Universities Space Research Association (USRA) today announced that scientists on NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) found a strange black hole that is changing its galactic surroundings in a... more
Ears all round: World's first acoustic observatory  PHYS.ORG · 2 weeks
You won't see stars at the Australian Acoustic Observatory but you will "see" a galaxy of sounds from around Australia. more
Image: Hubble detects dynamic galactic duo  PHYS.ORG · 2 weeks
Some galaxies are closer friends than others. While many live their own separate, solitary lives, others stray a little too close to a near neighbor and take their friendship even deeper. more
Hubble Space Telescope Observes NGC 5468  SCI-NEWS.COM · 2 weeks
The NASA/ESA Hubble Space Telescope has produced a spectacularly detailed image of a spiral galaxy called NGC 5468. NGC 5468 is a face-on spiral... more
Giant Magnetic Ropes in a Galaxy’s Halo  ASTRO WATCH · 2 weeks
This image of the "Whale Galaxy" (NGC 4631), made with the National Science Foundation's Karl G. Jansky Very Large Array (VLA), reveals... more
Stellar Black Hole in Our Galaxy Is So Massive It Shouldn't Exist  LIVE SCIENCE · 2 weeks
A gigantic black hole 15,000 light-years from our planet is twice as massive as what researchers thought was possible in our own galaxy. more
Ultraluminous X-ray source UGC 6456 ULX investigated in detail  PHYS.ORG · 2 weeks
Russian astronomers have performed a detailed study of one of the ultraluminous X-ray sources (ULXs) in the galaxy UGC 6456. Results of the research, presented in a paper published November... more
Astronomers Find ‘Impossible’ Stellar Black Hole in Milky Way  SCI-NEWS.COM · 2 weeks
An international team of astronomers has discovered an exceptionally massive black hole of stellar origin with a mass... more
Mapping our galaxy's magnetic field  PHYS.ORG · 2 weeks
Astronomers from CSIRO and Curtin University have used pulsars to probe the Milky Way's magnetic field. Working with colleagues in Europe, Canada, and South Africa, they have published the most precise catalogue of measurements towards mapping our Galaxy's... more
Astronomers Spot Huge Magnetic Structures in ‘Whale Galaxy’  SCI-NEWS.COM · 2 weeks
Astronomers using NSF’s Karl G. Jansky Very Large Array (VLA) have captured a new image of the edge-on barred spiral... more
The Simultaneous Merging of Giant Galaxies  ASTRO WATCH · 3 weeks
An international research team led by scientists from Göttingen and Potsdam proved for the first time that the galaxy NGC 6240 contains three supermassive... more
Scientists inch closer than ever to signal from cosmic dawn  PHYS.ORG · 3 weeks
Around 12 billion years ago, the universe emerged from a great cosmic dark age as the first stars and galaxies lit up. With a new analysis of data... more
Image: Giant magnetic ropes in a galaxy's halo  PHYS.ORG · 3 weeks
This image of the "Whale Galaxy" (NGC 4631), made with the National Science Foundation's Karl G. Jansky Very Large Array (VLA), reveals hair-like filaments of the galaxy's magnetic field protruding above and... more
Black hole nurtures baby stars a million light years away  PHYS.ORG · 3 weeks
Black holes are famous for ripping objects apart, including stars. But now, astronomers have uncovered a black hole that may have sparked the births of stars over a... more
Caught in the Act: MeerKAT Telescope Spies Stellar Flare  ASTRO WATCH · 3 weeks
Scientists using the MeerKAT radio telescope have discovered a unique and previously-unseen flare of radio emission from a... more
More dark-matter-deficient dwarf galaxies found  PHYS.ORG · 3 weeks
A team of researchers with members affiliated with multiple institutions in China has found evidence for more dark-matter-deficient dwarf galaxies. In their paper published in the journal Nature Astronomy, the group describes their study of dwarf galaxies and... more
Giant magnetic ropes in the outskirts of a spiral galaxy  nanowerk · 3 weeks
Astronomers have investigated polarized radio emission from the galaxy NGC 4631 at the VLA radio telescope. They detected for the first time a regular magnetic field over scales... more
NASA's Webb to unveil the secrets of nearby dwarf galaxies  PHYS.ORG · 3 weeks
In two separate studies using NASA's upcoming James Webb Space Telescope, a team of astronomers will observe dwarf galaxy companions to the Milky Way and the nearby Andromeda... more
Hubble Witnesses Dance of Galaxies: Arp 293  SCI-NEWS.COM · 3 weeks
NASA has released a beautiful photo taken by the NASA/ESA Hubble Space Telescope of the peculiar pair of interacting galaxies called Arp... more
Virgin Galactic rides out early struggles on Wall Street  SPACE NEWS · 3 weeks
Nearly a month after Virgin Galactic’s debut on public markets, the investment community is largely taking a wait-and-see... more
The simultaneous merging of giant galaxies  SCIENCE DAILY · 3 weeks
Scientists proved for the first time that the galaxy NGC 6240 contains three supermassive black holes. The unique observations show the black holes close to each other in the core of the galaxy. The study points... more
Astronomers Find Three Supermassive Black Holes in NGC 6240  SCI-NEWS.COM · 3 weeks
NGC 6240, a well-studied nearby galaxy system in the process of merging, contains three supermassive black holes at... more
Image: Hubble eyes an emitting galaxy  PHYS.ORG · 3 weeks
For this image, the NASA/ESA Hubble Space Telescope turned its powerful eye toward an emission-line galaxy called NGC 3749. more
The simultaneous merging of giant galaxies  PHYS.ORG · 3 weeks
An international research team led by scientists from Göttingen and Potsdam proved for the first time that the galaxy NGC 6240 contains three supermassive black holes. The unique observations, published in the journal Astronomy & Astrophysics,... more
Astronomers discover most energetic gamma-ray burst ever  SCIENCE DAILY · 4 weeks
Gamma-ray bursts are the most energetic phenomenon known to humankind. Although short-lived, they outshine stars and even galactic quasars. They usually display energies in the region of tens of giga-electron-volts, but for the first... more
Breaking the limits: Discovery of the highest-energy photons from a gamma-ray burst  PHYS.ORG · 4 weeks
Gamma-ray bursts (GRBs) are brief and extremely powerful cosmic explosions, suddenly appearing in the sky, about once per day. They are thought to result... more
Outback telescope captures Milky Way center, discovers remnants of dead stars  SCIENCE DAILY · 4 weeks
A radio telescope in the Western Australian outback has captured a spectacular new view of the center of the galaxy in which we live, the Milky... more
Phoenix cluster is cooling faster than expected  MIT · 4 weeks
With increasingly advanced data, Michael McDonald and colleagues study a galaxy cluster bursting with new stars. more
Astronomers Discover 27 New Supernova Remnants in Milky Way  SCI-NEWS.COM · 4 weeks
An international team of astronomers has detected 27 new supernova remnants using a data release of the GaLactic... more
Phoenix cluster is cooler than expected  MIT · 4 weeks
With increasingly advanced data, Michael McDonald and colleagues study a galaxy cluster bursting with new stars. more
Outback telescope captures Milky Way center, discovers remnants of dead stars  PHYS.ORG · 4 weeks
A radio telescope in the Western Australian outback has captured a spectacular new view of the center of the Milky Way galaxy. The image from the... more
Caught in the act: MeerKAT telescope spies stellar flare  PHYS.ORG · 4 weeks
Scientists using the MeerKAT radio telescope have discovered a unique and previously-unseen flare of radio emission from a binary star in our galaxy. more
Blowtorch jets from a black hole drive starbirth  PHYS.ORG · 4 weeks
Supermassive black holes, weighing millions or even billions of times our Sun's mass, are still only a tiny fraction of the mass of the galaxies they inhabit. But in some cases, the... more
Image: Orion A in infrared  PHYS.ORG · 4 weeks
Stars form within giant clouds of gas and dust that pervade galaxies like our own Milky Way. This image depicts one such cloud, known as Orion A, as seen by ESA's Herschel and Planck space observatories. more
Hubble Snaps Stunning Image of Spiral Galaxy NGC 3749  SCI-NEWS.COM · 4 weeks
The NASA/ESA Hubble Space Telescope has captured an amazing new photo of a galaxy called NGC 3749. NGC... more
Orion A in infrared  ESA · 4 weeks
Image: Stars form within giant clouds of gas and dust that pervade galaxies like our own Milky Way. This image depicts one such cloud, known as Orion A,... more
Astrophysicists find when galaxies rotate, size matters  PHYS.ORG · 4 weeks
The direction in which a galaxy spins depends on its mass, researchers have found. more
Image: Hubble spots a curious spiral  PHYS.ORG · 4 weeks
The universe is simply so vast that it can be difficult to maintain a sense of scale. Many galaxies we see through telescopes such as the NASA/ESA Hubble Space Telescope, the source of this beautiful image,... more
FermiMilky WayAndromedaTESSGravityExoplanetsSpace StationsBig BangJames WebbHubbleDark Matter/EnergyBlack Holes
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