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Preview: Brightsurf Science News :: Galaxies News

Galaxies Current Events and Galaxies News from Brightsurf

Galaxies Current Events and Galaxies News Events, Discoveries and Articles from Brightsurf

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The anatomy of a cosmic snake reveals the structure of distant galaxies

Mon, 13 Nov 17 00:14:10 -0800

We have a fair understanding of star formation, from the interstellar matter to the diffuse clouds whose gravitational contraction gives birth to stars. But observations of distant galaxies have questioned this picture, the size and mass of these distant stellar nurseries exceeding that of their local counterparts. Astrophysicists from the universities of Geneva and Zurich have tackled this inconsistency and found the first answers thanks to the observation of the cosmic snake.

Hitomi mission glimpses cosmic 'recipe' for the nearby universe

Mon, 13 Nov 17 00:00:20 -0800

Thanks to an in-depth look into the composition of gas in the Perseus galaxy cluster, Japan's Hitomi mission has given scientists new insights into the stellar explosions that formed its chemical elements.

Gravitational waves from merging supermassive black holes will be spotted within 10 years

Mon, 13 Nov 17 00:16:30 -0800

New research published November 13 in Nature Astronomy predicts that gravitational waves generated by the merger of two supermassive black holes -- the strongest gravitational waves in the universe -- will be detected within 10 years. The study is the first to use real data, rather than computer simulations, to predict when such an observation will be made.

Duo of titanic galaxies captured in extreme starbursting merger

Mon, 13 Nov 17 00:01:30 -0800

ALMA has uncovered the never-before-seen close encounter between two astoundingly bright and spectacularly massive galaxies in the early universe.

Shocking results of galaxy-cluster collisions

Tue, 07 Nov 17 00:13:40 -0800

Combining new images from the Very Large Array with X-Ray and visible-light images reveals the spectacular, energetic outcome when clusters of hundreds of galaxies each collide with each other.

Forest of molecular signals in star forming galaxy

Mon, 06 Nov 17 00:00:40 -0800

Astronomers found a rich molecular reservoir in the heart of an active star-forming galaxy with the Atacama Large Millimeter/submillimeter Array (ALMA). Among eight clouds identified at the center of the galaxy NGC 253, one exhibits very complex chemical composition, while in the other clouds many signals are missing. This chemical richness and diversity shed light on the nature of the baby boom galaxy.

Using powerful new telescope astronomers observe one of the oldest objects in the universe

Mon, 06 Nov 17 00:08:40 -0800

Astronomers using the Large Millimeter Telescope (LMT), which is operated jointly by UMass Amherst and Mexico's Instituto Nacional de Astrofísica, Óptica y Electrónica, report today in Nature Astronomy that they have detected the second most distant dusty, star-forming galaxy ever found in the universe -- born in the first one billion years after the Big Bang. It is the oldest object ever detected by the LMT.

Monster colliding black holes might lurk on the edge of spiral galaxies

Mon, 30 Oct 17 00:05:30 -0700

The outskirts of spiral galaxies like our own could be crowded with colliding black holes of massive proportions and a prime location for scientists hunting the sources of gravitational waves, said Rochester Institute of Technology researchers. Their study identifies an overlooked region potentially rife with orbiting black holes. Identifying host galaxies of merging massive black holes could help explain how orbiting pairs of black holes form.

Minor merger kicks supermassive black hole into high gear

Mon, 30 Oct 17 00:14:00 -0700

A team of researchers at the National Astronomical Observatory of Japan and the Open University of Japan used the Subaru Telescope to study the galaxy M77, which is famous for its super-active nucleus that releases enormous energy. The unprecedented deep image of the galaxy reveals evidence of a hidden minor merger billions of years ago. The discovery gives crucial evidence for the minor merger origin of active galactic nuclei.

A light in the dark: NASA sounding rocket probes the dark regions of space

Fri, 27 Oct 17 00:07:00 -0700

Spread out over unfathomable distances, this cold, diffuse gas between galaxies -- called the intergalactic medium, or IGM for short -- hardly emits any light, making it difficult to study.

Hubble discovers 'wobbling galaxies'

Thu, 26 Oct 17 00:15:50 -0700

Using the NASA/ESA Hubble Space Telescope, astronomers have discovered that the brightest galaxies within galaxy clusters 'wobble' relative to the cluster's centre of mass. This unexpected result is inconsistent with predictions made by the current standard model of dark matter. With further analysis it may provide insights into the nature of dark matter, perhaps even indicating that new physics is at work.

Revealing galactic secrets

Wed, 25 Oct 17 00:09:10 -0700

Countless galaxies vie for attention in this monster image of the Fornax Galaxy Cluster, some appearing only as pinpricks of light while others dominate the foreground. One of these is the lenticular galaxy NGC 1316. The turbulent past of this much-studied galaxy has left it with a delicate structure of loops, arcs and rings that astronomers have now imaged in greater detail than ever before with the VLT Survey Telescope.

New evidence for dark matter makes it even more exotic

Wed, 25 Oct 17 00:12:40 -0700

Looking at massive galaxy clusters, EPFL astronomers have observed that their brightest galaxies within them 'wobble' -- an unexpected phenomenon in current models. The discovery, published in MNRAS, adds to the body of evidence of dark matter beyond the Standard Cosmological Model (ΛCDM).

Colliding neutron stars seen by gravity waves and optical telescopes

Tue, 17 Oct 17 00:14:50 -0700

For the first time, astronomers have observed a celestial event through both conventional telescopes and gravitational waves. The collision of two super-dense neutron stars just 120 million light-years from Earth was captured by both gravity wave observatories (Laser Interferometer Gravitational Observatory, LIGO in the US, and Virgo in Italy) and telescopes including the DLT40 survey based in Chile.

Astronomers first to see source of gravitational waves in visible light

Mon, 16 Oct 17 00:02:40 -0700

For the first time, astronomers have observed in visible light a cataclysmic cosmic event that generated gravitational waves detected on Earth. The event was the merger of two neutron stars in a galaxy 130 million light-years away. The merger resulted in a supernova-like explosion, the light of which was first observed by a team of astronomers at the Carnegie Institution for Science's Las Campanas Observatory in northern Chile.

A better understanding of space -- via helicopter

Thu, 12 Oct 17 00:12:20 -0700

An algorithm that helps engineers design better helicopters may help astronomers more precisely envision the formation of planets and galaxies. Yale researchers Darryl Seligman and Greg Laughlin have created a new model for understanding how black holes, planets, and galaxies emerge from the vortex-rich environments of space.

Scientists discover one of the most luminous 'new stars' ever

Wed, 11 Oct 17 00:06:10 -0700

University of Leicester contributes to best-ever results on a 'new star' in a nearby galaxy

Scientists discover more about the ingredients for star formation

Mon, 09 Oct 17 00:08:30 -0700

In the local universe close to us about 70 percent of the hydrogen gas is found in individual atoms, while the rest is in molecules. Astronomers had expected that as they looked back in time, younger galaxies would contain more and more molecular hydrogen until it dominated the gas in the galaxy. Instead, they found that atomic hydrogen makes up the majority of gas in younger galaxies too.

NASA's Webb Telescope to witness galactic infancy

Wed, 04 Oct 17 00:01:50 -0700

Scientists will use NASA's James Webb Space Telescope to study sections of the sky previously observed by NASA's Great Observatories, including the Hubble Space Telescope and the Spitzer Space Telescope, to understand the creation of the universe's first galaxies and stars.

Bursting with starbirth

Thu, 28 Sep 17 00:02:30 -0700

This oddly shaped galactic spectacle is bursting with brand new stars. The pink fireworks in this image taken with the NASA/ESA Hubble Space Telescope are regions of intense star formation, triggered by a cosmic-scale collision. The huge galaxy in this image, NGC 4490, has a smaller galaxy in its gravitational grip and is feeling the strain.

Black holes with ravenous appetites define Type I active galaxies

Wed, 27 Sep 17 00:08:20 -0700

New research published in the journal Nature suggests that Type I and Type II active galaxies do not just appear different -- they are, in fact, very different from each other, both structurally and energetically. According to the results of a new study, the key factor that distinguishes Type I and Type II galaxies is the rate at which their central black holes -- or active galactic nuclei -- consume matter and spit out energy.

The material that obscures supermassive black holes

Mon, 25 Sep 17 00:06:00 -0700

Cristina Ramos Almeida, researcher at the IAC, and Claudio Ricci, from the Institute of Astronomy of the Universidad Católica de Chile, publish a review in Nature Astronomy of the most recent results on the material that obscures active galactic nuclei obtained from infrared and X-ray observations, their respective fields of research.

Oxygen-deficient dwarf galaxy hints at makings of early universe

Mon, 25 Sep 17 00:07:20 -0700

Astronomers have long searched for understanding of how the universe assembled from simplicity to complexity. A newly studied tiny galaxy is providing clues.

Observatory detects extragalactic cosmic rays hitting the Earth

Fri, 22 Sep 17 00:03:10 -0700

Fifty years ago, scientists discovered that the Earth is occasionally hit by cosmic rays of enormous energies. Since then, they have argued about the source of those ultra-high energy cosmic rays -- whether they came from our galaxy or outside the Milky Way. The answer is a galaxy or galaxies far, far away, according to a report published Sept. 22 in Science by the Pierre Auger Collaboration.

Study confirms cosmic rays have extragalactic origins

Thu, 21 Sep 17 00:12:20 -0700

International collaboration by scientists with the Pierre Auger Observatory confirms that most of the highest energy cosmic rays that reach the Earth come from outside the Milky Way galaxy.

Ultra-high-energy cosmic rays come from galaxies far, far away

Thu, 21 Sep 17 00:11:50 -0700

A new study reveals that cosmic rays with the highest energies that make their way to Earth originated from outside our Milky Way galaxy.

Detecting cosmic rays from a galaxy far, far away

Thu, 21 Sep 17 00:12:30 -0700

Where do cosmic rays come from? Solving a 50-year-old mystery, a collaboration of researchers has discovered it's much farther than the Milky Way.

Is the Milky Way an 'outlier' galaxy? Studying its 'siblings' for clues

Wed, 20 Sep 17 00:03:10 -0700

The most-studied galaxy in the universe -- the Milky Way -- might not be as 'typical' as previously thought, according to a new study. Early results from the Satellites Around Galactic Analogs (SAGA) Survey indicate that the Milky Way's satellites are much more tranquil than other systems of comparable luminosity and environment. Many satellites of those 'sibling' galaxies are actively pumping out new stars, but the Milky Way's satellites are mostly inert, the researchers found.

Discovery of the closest binary supermassive black hole system in the galaxy NGC 7674

Tue, 19 Sep 17 00:14:10 -0700

Scientists from NCRA-TIFR, Pune, and RIT, USA, have discovered the closest ever binary supermassive black hole system in a spiral galaxy NGC 7674, located about 400 million light years from Earth. The apparent separation of the two black holes in the binary system is less than one light year. This is direct observational proof of the existence of close supermassive black hole binary systems inside galaxies, which are potential sources of gravitational waves.

Scientists from MSU have invented a new way to 'weigh' intergalactic black holes

Tue, 19 Sep 17 00:08:20 -0700

Astrophysicists from Moscow State University have found a new way to estimate the mass of supermassive black holes outside our galaxy, even if these holes are barely detectable. The results of the study were published in the Astronomy and Astrophysics journal

Secrets of bright, rapidly spinning star revealed

Mon, 18 Sep 17 00:09:10 -0700

Almost 50 years after it was first predicted that rapidly rotating stars would emit polarized light, a UNSW Sydney-led team of scientists has succeeded in observing the phenomenon for the first time. They used a highly sensitive piece of equipment designed and built at UNSW and attached to the Anglo-Australian Telescope at Siding Spring Observatory in western NSW to detect the polarized light from Regulus, one of the brightest stars in the night sky.

When radio galaxies collide, supermassive black holes form tightly bound pairs

Mon, 18 Sep 17 00:15:20 -0700

Supermassive black holes found in the centers of galaxies can form gravitationally bound pairs when galaxies merge, according to a study published in the Sept. 18 issue of Nature Astronomy.

Physicists offer explanation for diverse galaxy rotations

Thu, 14 Sep 17 00:12:20 -0700

A University of California, Riverside-led team of physicists has found a simple and viable explanation for the diversity observed in galactic rotations. Hai-Bo Yu and colleagues report that diverse galactic-rotation curves, a graph of rotation speeds at different distances from the center, can be naturally explained if dark matter particles are assumed to strongly collide with one another in the inner halo, close to the galaxy's center -- a process called dark matter self-interaction.

New supernova analysis reframes dark energy debate

Wed, 13 Sep 17 00:01:10 -0700

The accelerating expansion of the Universe may not be real, but could just be an apparent effect, according to new research published in the journal Monthly Notices of the Royal Astronomical Society. The new study -- by a group at the University of Canterbury in Christchurch, New Zealand -- finds the fit of Type Ia supernovae to a model universe with no dark energy to be very slightly better than the fit to the standard dark energy model.

Scientists use mismatch in telescopic data to get a handle on quasars and their 'tails'

Tue, 12 Sep 17 00:15:30 -0700

Scientists compared the data on the coordinates of quasars obtained by Gaia and VLBI and suggested a method for revealing structure indirectly by means of combining the data from existing telescopes. Moreover, the precision they've got is superior to what is possible with ordinary optical telescopes and even with Hubble.

Astronomers spun up by galaxy-shape finding

Mon, 11 Sep 17 00:15:10 -0700

For the first time astronomers have measured how a galaxy's spin affects its shape -- something scientists have tried to do for 90 years -- using a sample of 845 galaxies. Because a galaxy's shape is the result of past events such as merging with other galaxies, knowing its shape also tells us about the galaxy's history. The team made its findings with SAMI (the Sydney-AAO Multi-object Integral field unit), a game-changing instrument.

Explosive birth of stars swells galactic cores

Sun, 10 Sep 17 00:03:10 -0700

Astronomers found that active star formation upswells galaxies, like yeast helps bread rise. Using three powerful telescopes on the ground and in orbit, they observed galaxies from 11 billion years ago and found explosive formation of stars in the cores of galaxies. This suggests that galaxies can change their own shape without interaction with other galaxies.

Exchanges of identity in deep space

Thu, 07 Sep 17 00:15:00 -0700

By reproducing the complexity of the cosmos through unprecedented simulations, a new study highlights the importance of the possible behaviour of very high energy photons. In their journey through intergalactic magnetic fields, they could be transformed into axions and thus avoid being absorbed

Does the organic material of comets predate our solar system?

Wed, 06 Sep 17 00:12:00 -0700

The Rosetta space probe discovered a large amount of organic material in the nucleus of comet 'Chury.' In an article published by MNRAS on Aug. 31, 2017, two French researchers advance the theory that this matter has its origin in interstellar space and predates the birth of the solar system.

UCLA physicists propose new theories of black holes from the very early universe

Fri, 01 Sep 17 00:05:50 -0700

'Primordial black holes,' believed to have formed shortly after the Big Bang, might explain how heavy elements such as gold, platinum and uranium came to be, UCLA physicists report.

ALMA finds huge hidden reservoirs of turbulent gas in distant galaxies

Wed, 30 Aug 17 00:07:10 -0700

ALMA has been used to detect turbulent reservoirs of cold gas surrounding distant starburst galaxies. By detecting CH+ for the first time in the distant universe this research opens up a new window of exploration into a critical epoch of star formation. The presence of this molecule sheds new light on how galaxies manage to extend their period of rapid star formation. The results appear in the journal Nature.

Researchers propose how the universe became filled with light

Wed, 30 Aug 17 00:07:00 -0700

University of Iowa researchers have a new explanation for how the universe changed from darkness to light. They propose that black holes within galaxies produce winds strong enough to fling out matter that punctures holes in galaxies, allowing light to escape.

Magnetic fields in distant galaxy are new piece of cosmic puzzle

Wed, 30 Aug 17 00:16:00 -0700

Astronomers have measured magnetic fields in a galaxy 4.6 billion light-years away -- a big clue to understanding how magnetic fields formed and evolved over cosmic time.

Record-breaking galaxy 5 billion light-years away shows we live in a magnetic universe

Mon, 28 Aug 17 00:07:30 -0700

A team of astronomers has observed the magnetic field of a galaxy five billion light-years from Earth. The galaxy is the most distant in which a coherent magnetic field has been observed and provides important insight into how magnetism in the universe formed and evolved.

VLA reveals distant galaxy's magnetic field

Mon, 28 Aug 17 00:06:40 -0700

A chance combination of a gravitational lens and polarized waves coming from a distant quasar gave astronomers the tool needed to make a measurement important to understanding the origin of magnetic fields in galaxies.

Supermassive black holes feed on cosmic jellyfish

Wed, 16 Aug 17 00:07:40 -0700

Observations of 'Jellyfish galaxies' with ESO's Very Large Telescope have revealed a previously unknown way to fuel supermassive black holes. It seems the mechanism that produces the tentacles of gas and newborn stars that give these galaxies their nickname also makes it possible for the gas to reach the central regions of the galaxies, feeding the black hole that lurks in each of them and causing it to shine brilliantly. The results appeared today in the journal Nature.

Cosmic magnifying lens reveals inner jets of black holes

Tue, 15 Aug 17 00:07:50 -0700

Jet material ejected from a black hole is magnified in new observations from Caltech's Owens Valley Radio Observatory.

A fleeting blue glow

Mon, 14 Aug 17 00:03:20 -0700

In the 2009 film 'Star Trek,' a supernova hurtles through space and obliterates a planet unfortunate enough to be in its path. Fiction, of course, but it turns out the notion is not so farfetched.

International team of researchers redefines cosmic velocity web

Mon, 14 Aug 17 00:14:40 -0700

The cosmic web -- the distribution of matter on the largest scales in the universe -- has usually been defined through the distribution of galaxies. Now, a new study by a team of astronomers from France, Israel and Hawaii demonstrates a novel approach. Instead of using galaxy positions, they mapped the motions of thousands of galaxies.

Ohio Supercomputer Center helps researchers map invisible universe

Thu, 10 Aug 17 00:07:40 -0700

The Ohio Supercomputer Center played a critical role in helping researchers reach a milestone mapping the growth of the universe from its infancy to present day.