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.

  • Einstein proved right in another galaxy
    on June 21, 2018 at 6:10 pm

    Astronomers have made the most precise test of gravity outside our own solar system. By combining data taken with NASA's Hubble Space Telescope and the European Southern Observatory's Very Large Telescope, the researchers show that gravity in this galaxy behaves as predicted by Albert Einstein's general theory of relativity, confirming the theory's validity on galactic scales. […]

  • Old star clusters could have been the birthplace of supermassive stars
    on June 21, 2018 at 2:10 pm

    Astrophysicists may have found a solution to a problem that has perplexed scientists for more than 50 years: why are the stars in globular clusters made of material different to other stars found in the Milky Way? […]

  • Best evidence of rare black hole captured
    on June 18, 2018 at 6:18 pm

    Scientists have been able to prove the existence of small black holes and those that are super-massive but the existence of an elusive type of black hole, known as intermediate-mass black holes (IMBHs) is hotly debated. New research shows the strongest evidence to date that this middle-of-the-road black hole exists, by serendipitously capturing one in action devouring an encountering star. […]

  • Astronomers see distant eruption as black hole destroys star
    on June 15, 2018 at 1:38 am

    Scientists get first direct images showing fast-moving jet of particles ejected as a supermassive black hole at the core of a galaxy shreds a passing star. […]

  • Dust clouds can explain puzzling features of active galactic nuclei
    on June 15, 2018 at 1:36 am

    Many large galaxies have a bright central region called an active galactic nucleus, powered by matter spiraling into a supermassive black hole. Gas clouds around the AGN emit light at characteristic wavelengths, but the complexity and variability of these emissions has been a longstanding puzzle. A new study explains these and other puzzling features of active galactic nuclei as the result of small clouds of dust that can partially obscure the innermost regions of AGNs. […]

  • The disc of the Milky Way is bigger than we thought
    on June 7, 2018 at 3:27 pm

    A team of researchers suggests that if we could travel at the speed of light it would take us 200,000 years to cross the disc of our Galaxy. […]

  • Astronomers find a galaxy unchanged since the early universe
    on June 7, 2018 at 2:10 pm

    Researchers confirm the first detection of a relic galaxy with the Hubble Space Telescope. […]

  • Discovery of clusters of galaxies in the early universe
    on June 7, 2018 at 2:09 pm

    Until now astronomers thought that these phenomena occurred 3,000 million years after the Big Bang, but this new result shows that they were already happening when the Universe was 1,500 million years old. […]

  • How do you weigh a galaxy? Especially the one you're in?
    on June 6, 2018 at 9:38 pm

    Pinning down the mass of a galaxy may seem like an esoteric undertaking, but scientists think it holds the key to unraveling the nature of the elusive, yet-to-be-seen dark matter, and the fabric of our cosmos. A new technique promises more reliable estimates of the masses of galaxies. […]

  • Tumultuous galaxy mergers better at switching on black holes
    on June 6, 2018 at 9:37 pm

    A new study finds that violent crashes may be more effective at activating black holes than more peaceful mergers. […]

  • Globular clusters 4 billion years younger than previously thought
    on June 4, 2018 at 3:24 pm

    Globular clusters could be up to 4 billion years younger than previously thought, new research has found. […]

  • Cosmic collision lights up the darkness
    on May 31, 2018 at 3:46 pm

    Though it resembles a peaceful rose swirling in the darkness of the cosmos, NGC 3256 is actually the site of a violent clash. This distorted galaxy is the relic of a collision between two spiral galaxies, estimated to have occured 500 millions years ago. Today it is still reeling in the aftermath of this event. […]

  • Large Magellanic Cloud: A crowded neighborhood
    on May 30, 2018 at 3:31 pm

    Glowing brightly about 160,000 light-years away, the Tarantula Nebula is the most spectacular feature of the Large Magellanic Cloud, a satellite galaxy to our Milky Way. A new image reveals a cosmic landscape of star clusters, glowing gas clouds and the scattered remains of supernova explosions. This is the sharpest image ever of this entire field. […]

  • New model explains what we see when a massive black hole devours a star
    on May 29, 2018 at 6:09 pm

    A star that wanders too close to the supermassive black hole in the center of its galaxy will be torn apart by the black hole's gravity in a violent cataclysm called a tidal disruption event (TDE), producing a bright flare of radiation. A new study provides a unified model that explains recent observations of these extreme events. […]

  • Lightening up dark galaxies
    on May 23, 2018 at 1:13 pm

    Astronomers have identified at least six candidates for dark galaxies -- galaxies that have a few (if any) stars in them and are, for that reason, notoriously difficult to detect with current instruments. […]

  • Astronomers release most complete ultraviolet-light survey of nearby galaxies
    on May 17, 2018 at 6:25 pm

    Capitalizing on the unparalleled sharpness and spectral range of NASA's Hubble Space Telescope, an international team of astronomers is releasing the most comprehensive, high-resolution ultraviolet-light survey of nearby star-forming galaxies. […]

  • Vast ionized hydrogen cloud in the Whirlpool Galaxy revealed by ultra-sensitive telescope
    on May 16, 2018 at 6:46 pm

    No one has ever seen what astronomers first observed using a refurbished 75-year-old telescope in the Arizona mountains. What it was turned out to be a massive cloud of ionized hydrogen gas spewed from a nearby galaxy and then essentially 'cooked' by radiation from the galaxy's central black hole. […]

  • Evidence for stars forming just 250 million years after Big Bang
    on May 16, 2018 at 5:12 pm

    Astronomers have used observations from the Atacama Large Millimeter/submillimeter Array (ALMA) and ESO's Very Large Telescope (VLT) to determine that star formation in the very distant galaxy MACS1149-JD1 started at an unexpectedly early stage, only 250 million years after the Big Bang. This discovery also represents the most distant oxygen ever detected in the universe and the most distant galaxy ever observed by ALMA or the VLT. […]

  • Astronomers find fastest-growing black hole known in space
    on May 16, 2018 at 2:52 pm

    Astronomers have found the fastest-growing black hole known in the universe, describing it as a monster that devours a mass equivalent to our sun every two days. […]

  • Dozens of binaries from Milky Way's globular clusters could be detectable by LISA
    on May 11, 2018 at 8:02 pm

    A next-generation observatory, called LISA, is expected to be in space in 2034, and it will be sensitive to gravitational waves of a lower frequency than those detected by the Earth-bound Laser Interferometer Gravitational-Wave Observatory (LIGO). […]

  • What will happen when our sun dies?
    on May 7, 2018 at 3:19 pm

    Scientists agree the sun will die in approximately five billion years, but they weren't sure what would happen next -- until now. A team of international astronomers predicts it will turn into a massive ring of luminous, interstellar gas and dust, known as a planetary nebula. […]

  • Doubt cast on new theories of star formation
    on April 30, 2018 at 5:19 pm

    The birth of stars from dense clouds of gas and dust may be happening in a completely unexpected way in our own galaxy and beyond. […]

  • Assembly of massive galaxy cluster witnessed for the first time
    on April 25, 2018 at 5:18 pm

    For the first time, astronomers have witnessed the birth of a colossal cluster of galaxies. Their observations reveal at least 14 galaxies packed into an area only four times the diameter of the Milky Way's galactic disk. Computer simulations of the galaxies predict that over time the cluster will assemble into one of the most massive structures in the modern universe. […]

  • Milky Way's supermassive black hole may have 'unseen' siblings
    on April 24, 2018 at 5:36 pm

    Astronomers predict that galaxies with a mass similar to the Milky Way should host several supermassive black holes. […]

  • Uncovering the secret law of the evolution of galaxy clusters
    on April 24, 2018 at 1:37 pm

    Using observational data from the Hubble Space Telescope and the Subaru Telescope, the size and mass of galaxy clusters have precisely been measured. The research team analyzed those data and found a simple law that regulates the growth of the clusters. They also showed that the clusters are still young and growing. The newfound law will serve as a tool to clarify the evolutionary history of clusters and the universe. […]

  • 'Face recognition' for galaxies: Artificial intelligence brings new tools to astronomy
    on April 23, 2018 at 4:51 pm

    A machine learning method called 'deep learning,' which has been widely used in face recognition and other image- and speech-recognition applications, has shown promise in helping astronomers analyze images of galaxies and understand how they form and evolve. In a new study, researchers used computer simulations of galaxy formation to train a deep learning algorithm, which then proved surprisingly good at analyzing images of galaxies from the Hubble Space Telescope. […]

  • Galaxies grow bigger and puffier as they age
    on April 23, 2018 at 4:50 pm

    A new international study has found that galaxies grow bigger and puffier as they age. […]

  • Black hole and stellar winds form giant butterfly, shut down star formation in galaxy
    on April 18, 2018 at 6:15 pm

    Researchers have completed an unprecedented 'dissection' of twin galaxies in the final stages of merging. The new study explores a galaxy called NGC 6240. While most galaxies in the universe hold only one supermassive black hole at their center, NGC 6240 contains two -- and they're circling each other in the last steps before crashing together. […]

  • 340,000 stars' 'DNA' interrogated in search for sun's lost siblings
    on April 18, 2018 at 1:20 pm

    Astronomers have revealed the 'DNA' of more than 340,000 stars in the Milky Way, which should help them find the siblings of the sun, now scattered across the sky. This is the first major announcement of an ambitious survey as part of a quest to uncover the formulation and evolution of galaxies -- after the Australian-led Galactic Archaeology survey, called GALAH, commenced three years ago. […]

  • Hubble catches a colossal cluster
    on April 13, 2018 at 5:34 pm

    This NASA/ESA Hubble Space Telescope image shows a massive galaxy cluster glowing brightly in the darkness. […]