Galaxies

Galaxies News -- ScienceDaily News and research on the formation of galaxies. From the Milky Way to Andromeda Galaxy, see astronomy images of splendid galaxies in the universe. Read the latest research discoveries.

  • Astronomers discover S0-2 star is single and ready for big Einstein test
    on February 22, 2018 at 3:36 pm

    A team of astronomers has found that S0-2 does not have a significant other after all, or at least one that is massive enough to get in the way of critical measurements that astronomers need to test Einstein's Theory of General Relativity. Up until now, it was thought that S0-2 may be a binary, a system where two stars circle around each other. […]

  • Magnetic field traces gas and dust swirling around supermassive black hole
    on February 21, 2018 at 5:29 pm

    Astronomers reveal a new high resolution map of the magnetic field lines in gas and dust swirling around the supermassive black hole at the center of our Galaxy. The team created the map, which is the first of its kind, using the CanariCam infrared camera attached to the Gran Telescopio Canarias sited on the island of La Palma. […]

  • No relation between a supermassive black hole and its host galaxy?
    on February 20, 2018 at 5:30 pm

    Using ALMA to observe an active galaxy with a strong ionized gas outflow from the galactic center, a team has obtained a result making astronomers even more puzzled -- the team clearly detected CO gas associated with the galactic disk, yet they have also found that the CO gas which settles in the galaxy is not affected by the strong ionized gas outflow launched from the galactic center. […]

  • 'Ultramassive' black holes discovered in far-off galaxies
    on February 20, 2018 at 2:32 pm

    Thanks to data collected by NASA’s Chandra X-ray telescope on galaxies up to 3.5 billion light years away from Earth, an international team of astrophysicists was able to detect what is likely to be the most massive black holes ever discovered in the universe. The team’s calculations showed that these “ultramassive” black holes are growing faster than the stars in their respective galaxies. […]

  • A lonely beauty
    on February 14, 2018 at 8:02 pm

    Beauty, grace, mystery -- this magnificent spiral galaxy has all the qualities of a perfect galactic Valentine. The galaxy NGC 3344 presents itself face-on, allowing astronomers a detailed look at its intricate and elegant structure. And Hubble's ability to observe objects over a wide range of different wavelengths reveals features that would otherwise remain invisible. […]

  • Rotating dusty gaseous donut around an active supermassive black hole
    on February 14, 2018 at 2:39 pm

    High resolution observations show a rotating dusty gas torus around an active supermassive black hole. The existence of such rotating donuts-shape structures was first suggested decades ago, but this is the first time one has been confirmed so clearly. This is an important step in understanding the co-evolution of supermassive black holes and their host galaxies. […]

  • New models give insight into the heart of the Rosette Nebula
    on February 13, 2018 at 1:44 pm

    New research offers an explanation for the discrepancy between the size and age of the Rosetta Nebula's central cavity and that of its central stars. […]

  • Baby, it's cold outside: Understanding conditions for star formation
    on February 5, 2018 at 7:11 pm

    Researchers demonstrate how a gas escapes ice at an extremely cold temperature, providing insight about how stars form in interstellar clouds. […]

  • Natural telescope: New magnification record for magnification by gravitational lensing
    on February 2, 2018 at 8:32 pm

    An international team of astronomers has discovered one of the most extreme instances of magnification by gravitational lensing. Using the Hubble Space Telescope to survey a sample of huge clusters of galaxies, the team found a distant galaxy, eMACSJ1341-QG-1, that is magnified 30 times thanks to the distortion of space-time created by the massive galaxy cluster dubbed eMACSJ1341.9-2441. […]

  • Astrophysicists discover planets in extragalactic galaxies using microlensing
    on February 2, 2018 at 5:37 pm

    Astrophysicists have discovered for the first time a population of planets beyond the Milky Way galaxy. Using microlensing -- an astronomical phenomenon and the only known method capable of discovering planets at truly great distances from the Earth among other detection techniques -- researchers were able to detect objects in extragalactic galaxies that range from the mass of the Moon to the mass of Jupiter. […]

  • Distant galaxy group contradicts common cosmological models, simulations
    on February 1, 2018 at 7:29 pm

    Astronomers have determined that Centaurus A, a massive elliptical galaxy 13 million light-years from Earth, is accompanied by a number of dwarf satellite galaxies orbiting the main body in a narrow disk. The researchers note that this is the first time such a galactic arrangement has been observed outside the Local Group, home to the Milky Way. […]

  • Supermassive black holes can feast on one star per year
    on February 1, 2018 at 7:14 pm

    Supermassive black holes in some galaxies can eat stars at a rate of one per year in the period following a galactic merger, helping explain a longstanding astronomical mystery about eccentric stellar orbits. […]

  • How black holes shape the cosmos
    on February 1, 2018 at 1:58 pm

    Astrophysicists have gained new insights into the formation and evolution of galaxies. They calculated how black holes influence the distribution of dark matter, how heavy elements are produced and distributed throughout the cosmos, and where magnetic fields originate. This was possible by developing and programming a new simulation model for the universe, which created the most extensive simulations of this kind to date. […]

  • Stellar embryos in nearby dwarf galaxy contain surprisingly complex organic molecules
    on January 30, 2018 at 8:22 pm

    The nearby dwarf galaxy known as the Large Magellanic Cloud (LMC) is a chemically primitive place. Unlike the Milky Way, this semi-spiral collection of a few tens-of-billions of stars lacks our galaxy's rich abundance of heavy elements, like carbon, oxygen, and nitrogen. With such a dearth of heavy elements, astronomers predict that the LMC should contain a comparatively paltry amount of complex carbon-based molecules. Previous observations of the LMC seem to support that view. New observations have uncovered the surprisingly clear chemical 'fingerprints' of the complex organic molecules methanol, dimethyl ether, and methyl formate. Though previous observations found hints of methanol in the LMC, the latter two are unprecedented findings and stand as the most complex molecules ever conclusively detected outside of our galaxy. […]

  • Newborns or survivors? The unexpected matter found in hostile black hole winds
    on January 30, 2018 at 5:37 pm

    The existence of large numbers of molecules in winds powered by supermassive black holes at the centers of galaxies has puzzled astronomers since they were discovered more than a decade ago. Molecules trace the coldest parts of space, and black holes are the most energetic phenomena in the universe, so finding molecules in black hole winds was like discovering ice in a furnace. A new theory predicts the molecules are born in the winds with unique properties that enable them to adapt to and thrive in the hostile environment. […]

  • Challenging existing models of black holes
    on January 19, 2018 at 1:59 pm

    A new study expands the scientific community's understanding of black holes in our galaxy and the magnetic fields that surround them. […]

  • North, east, south, west: The many faces of Abell 1758
    on January 18, 2018 at 7:26 pm

    Resembling a swarm of flickering fireflies, this beautiful galaxy cluster glows intensely in the dark cosmos, accompanied by the myriad bright lights of foreground stars and swirling spiral galaxies. A1758N is a sub-cluster of Abell 1758, a massive cluster containing hundreds of galaxies. Although it may appear serene in this NASA/ESA Hubble Space Telescope image, the sub-cluster actually comprises two even smaller structures currently in the turbulent process of merging. […]

  • Odd behavior of star reveals lonely black hole hiding in giant star cluster
    on January 17, 2018 at 1:56 pm

    Astronomers using ESO's MUSE instrument on the Very Large Telescope in Chile have discovered a star in the cluster NGC 3201 that is behaving very strangely. It appears to be orbiting an invisible black hole with about four times the mass of the sun -- the first such inactive stellar-mass black hole found in a globular cluster and the first found by directly detecting its gravitational pull. […]

  • Hubble weighs in on mass of 3 million billion suns
    on January 16, 2018 at 7:42 pm

    In 2014, astronomers found an enormous galaxy cluster contains the mass of a staggering three million billion suns -- so it's little wonder that it has earned the nickname of "El Gordo" ("the Fat One" in Spanish)! Known officially as ACT-CLJ0102-4915, it is the largest, hottest, and brightest X-ray galaxy cluster ever discovered in the distant Universe. […]

  • Supermassive black hole caught burping -- twice
    on January 11, 2018 at 9:29 pm

    Astronomers have caught a supermassive black hole in a distant galaxy snacking on gas and then "burping" -- not once, but twice. […]

  • Magnified and stretched out image of extremely distant galaxy
    on January 11, 2018 at 9:29 pm

    An intensive survey deep into the universe by NASA's Hubble and Spitzer space telescopes has yielded the proverbial needle-in-a-haystack: the farthest galaxy yet seen in an image that has been stretched and amplified by a phenomenon called gravitational lensing. […]

  • Archeology of our Milky Way's ancient hub
    on January 11, 2018 at 9:29 pm

    A new analysis of about 10,000 normal Sun-like stars in the Milky Way's bulge reveals that our galaxy’s hub is a dynamic environment of variously aged stars zipping around at different speeds. […]

  • Swarm of hydrogen clouds flying away from center of the Milky Way
    on January 10, 2018 at 9:32 pm

    Astronomers have discovered what appears to be a grand exodus of more than 100 hydrogen clouds streaming away from the center of the Milky Way and heading into intergalactic space. […]

  • New stellar streams confirm 'melting pot' history of the galaxy
    on January 10, 2018 at 7:13 pm

    Where do the stars in our Galaxy come from? All the stars we see in the night-time sky belong to our Milky Way galaxy, and while most stars were likely born here, in the Milky Way, many appear to have originated in other galaxies and migrated to our shores. Tell-tale evidence comes from streams of stars created when small galaxies interact with the Milky Way. […]

  • Astronomers detect 'whirlpool' movement in earliest galaxies; swirling gases soon after Big Bang
    on January 10, 2018 at 6:15 pm

    Astronomers have looked back to a time soon after the Big Bang, and have discovered swirling gas in some of the earliest galaxies to have formed in the universe. These 'newborns' -- observed as they appeared nearly 13 billion years ago -- spun like a whirlpool, similar to our own Milky Way. This is the first time that it has been possible to detect movement in galaxies at such an early point in the universe's history. […]

  • Black hole research could aid understanding of how small galaxies evolve
    on January 9, 2018 at 7:19 pm

    Scientists have solved a cosmic mystery by finding evidence that supermassive black holes prevent stars forming in some smaller galaxies. […]

  • Supermassive black holes control star formation in large galaxies
    on January 1, 2018 at 7:48 pm

    Young galaxies blaze with bright new stars forming at a rapid rate, but star formation eventually shuts down as a galaxy evolves. A new study shows that the mass of the black hole in the center of the galaxy determines how soon this 'quenching' of star formation occurs. […]

  • Scientists describe how solar system could have formed in bubble around giant star
    on December 23, 2017 at 6:48 pm

    Scientists have laid out a comprehensive theory for how our solar system could have formed in the wind-blown bubbles around a giant, long-dead star. The study addresses a nagging cosmic mystery about the abundance of two elements in our solar system compared to the rest of the galaxy. […]

  • 'Cosmic lantern' could help us further understand the fate of the universe
    on December 21, 2017 at 3:13 pm

    New research has provided a deeper insight into emission line galaxies, used in several ongoing and upcoming surveys, to help us further understand the composition and fate of the universe. […]

  • Dawn of a galactic collision
    on December 14, 2017 at 7:07 pm

    A riot of color and light dances through this peculiarly shaped galaxy, NGC 5256. Its smoke-like plumes are flung out in all directions and the bright core illuminates the chaotic regions of gas and dust swirling through the galaxy's center. Its odd structure is due to the fact that this is not one galaxy, but two -- in the process of a galactic collision. […]