Cosmology

Cosmology News -- ScienceDaily Cosmology news. From deep observations of the far reaches of space and time to spectroscopic analysis and more. Read cosmology articles and consider how astronomers view the origin of the 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. […]

  • Atoms may hum a tune from grand cosmic symphony
    on April 19, 2018 at 6:15 pm

    Researchers playing with a cloud of ultracold atoms uncovered behavior that bears a striking resemblance to the universe in microcosm. Their work forges new connections between atomic physics and the sudden expansion of the early universe. […]

  • Vast stellar nursery of Lagoon Nebula
    on April 19, 2018 at 5:09 pm

    This colorful cloud of glowing interstellar gas is just a tiny part of the Lagoon Nebula, a vast stellar nursery. This nebula is a region full of intense activity, with fierce winds from hot stars, swirling chimneys of gas, and energetic star formation all embedded within a hazy labyrinth of gas and dust. […]

  • Researchers find new way of exploring the afterglow from the Big Bang
    on April 19, 2018 at 2:01 pm

    Researchers have developed a new way to improve our knowledge of the Big Bang by measuring radiation from its afterglow, called the cosmic microwave background radiation. The new results predict the maximum bandwidth of the universe, which is the maximum speed at which any change can occur in the universe. […]

  • 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. […]

  • Tiny distortions in universe's oldest light reveal strands in cosmic web
    on April 10, 2018 at 5:27 pm

    Scientists have decoded faint distortions in the patterns of the universe's earliest light to map huge tubelike structures invisible to our eyes -- known as filaments -- that serve as superhighways for delivering matter to dense hubs such as galaxy clusters. […]

  • Hunting for dark matter in the smallest galaxies in the Universe
    on April 6, 2018 at 1:17 pm

    Astrophysicists have created a new method to measure the amount of dark matter at the center of tiny “dwarf” galaxies. […]

  • Dark matter might not be interactive after all
    on April 6, 2018 at 2:34 am

    Astronomers are back in the dark about what dark matter might be, after new observations showed the mysterious substance may not be interacting with forces other than gravity after all. […]

  • Dead star circled by light
    on April 5, 2018 at 4:03 pm

    New images reveal a rich landscape of stars and glowing clouds of gas in one of our closest neighboring galaxies, the Small Magellanic Cloud. The pictures have allowed astronomers to identify an elusive stellar corpse left behind by a 2,000-year-old supernova explosion. The MUSE instrument was used to establish where this object is hiding, and Chandra X-ray Observatory data confirmed its identity as an isolated neutron star. […]

  • Hubble makes the first precise distance measurement to an ancient globular star cluster
    on April 4, 2018 at 5:34 pm

    Astronomers have for the first time precisely measured the distance to one of the oldest objects in the universe, a collection of stars born shortly after the big bang. […]

  • Astrophysicists map the infant universe in 3-D and discover 4,000 early galaxies
    on April 4, 2018 at 1:39 pm

    Astronomers have announced one of the largest 3-D maps of the infant universe. […]

  • Gravitational waves created by black holes in the cenetr of most galaxies
    on April 2, 2018 at 11:28 pm

    Gravitational waves may be forged in the heart of the galaxy, says a new study. […]

  • Astronomers find 72 bright and fast explosions
    on April 2, 2018 at 11:26 pm

    Gone in a (cosmological) flash: a team of astronomers found 72 very bright, but quick events in a recent survey and are still struggling to explain their origin. […]

  • Cosmic lens helps Hubble capture image of most distant star ever seen
    on April 2, 2018 at 3:07 pm

    Peering through the gravitational lens of a massive galaxy cluster 5 billion light years from Earth, astronomers have discovered a single, blue supergiant star 9 billion light years away, farther than any other normal star seen before. The star, dubbed Icarus, was magnified more than 2,000 times when it passed directly behind a sun-like star in the lensing cluster. This demonstrates a new way of studying stars in the earliest years of the universe. […]

  • New math bridges holography and twistor theory
    on March 29, 2018 at 6:10 pm

    A new perspective bridges two approaches to understanding quantum gravity. […]

  • Cosmologists create largest simulation of galaxy formation, break their own record
    on March 19, 2018 at 4:04 pm

    Cosmology researchers are releasing initial findings from IllustrisTNG, their follow-up to the 2015 record-breaking Illustris simulation -- the largest-ever hydrological simulation of galaxy formation. […]

  • Double or nothing: Astronomers rethink quasar environment
    on March 13, 2018 at 1:30 pm

    Astronomers have identified nearly 200 'protoclusters,' the progenitors of galaxy clusters, in the early Universe, about 12 billion years ago, about ten times more than previously known. They also found that quasars don't tend to reside in protoclusters; but if there is one quasar in a protocluster, there is likely a second nearby. This result raises doubts about the relation between protoclusters and quasars. […]

  • Arrested development: Hubble finds relic galaxy close to home
    on March 12, 2018 at 6:15 pm

    Astronomers have put NASA's Hubble Space Telescope on an Indiana Jones-type quest to uncover an ancient 'relic galaxy' in our own cosmic backyard. […]

  • A new kind of star
    on March 8, 2018 at 3:52 pm

    A new kind of star: Astronomers have developed a novel mathematical model that combines general relativity with the repulsive effect of quantum vacuum polarization. The inclusion of this repulsive force allows describing ultracompact configurations of stars, which were previously considered by scientists not to exist in equilibrium. […]

  • A peculiar galactic clash
    on March 8, 2018 at 3:52 pm

    Galaxies are not static islands of stars -- they are dynamic and ever-changing, constantly on the move through the darkness of the Universe. Sometimes, as seen in this spectacular Hubble image of Arp 256, galaxies can collide in a crash of cosmic proportions. […]

  • Physicists lay groundwork to better understand the birth of the universe
    on March 6, 2018 at 7:16 pm

    Scientists have developed the first techniques for describing the thermodynamics of very small systems with very high energy -- like the universe at the start of the Big Bang -- which could lead to a better understanding of the birth of the universe and other cosmological phenomena. […]

  • Unprecedentedly wide and sharp dark matter map
    on March 2, 2018 at 3:18 pm

    A research team released an unprecedentedly wide and sharp dark matter map based on the newly obtained imaging data by Hyper Suprime-Cam on the Subaru Telescope. The dark matter distribution is estimated by the weak gravitational lensing technique. The team found indications that the number of dark matter halos could be inconsistent with what the simplest cosmological model suggests. This could be a new clue to understanding why the expansion of the universe is accelerating. […]

  • Can strongly lensed type 1a supernovae resolve cosmology's biggest controversy?
    on March 1, 2018 at 2:48 pm

    Astrophysicists have discovered how to control the 'micolensing' effects of strongly lensed Type 1a Supernovae with supercomputers at NERSC. Armed with this knowledge they believe they will be able to find 1,000 strongly lensed Type Ia supernovae in realtime from LSST data -- that's 20 times more than previous expectations. […]

  • Search for first stars uncovers 'dark matter'
    on February 28, 2018 at 7:44 pm

    New research offers the first direct proof that dark matter exists and that it is composed of low-mass particles. […]

  • Unlocking the Secrets of the Universe
    on February 28, 2018 at 6:11 pm

    After 12 years of experimental effort, a team of scientists has detected the fingerprints of the earliest stars in the universe. Using radio signals, the detection provides the first evidence for the oldest ancestors in our cosmic family tree, born by a mere 180 million years after the universe began. […]

  • Six decades of cosmology
    on February 28, 2018 at 6:10 pm

    An expert shares his personal reminiscences of the evolution of the subject of cosmology over six decades. He tells of the increase in our confidence in the standard model of cosmology to the extent that it has become a dogma. […]

  • Improved Hubble yardstick gives fresh evidence for new physics in the universe
    on February 22, 2018 at 9:20 pm

    Astronomers have used NASA's Hubble Space Telescope to make the most precise measurements of the expansion rate of the universe since it was first calculated nearly a century ago. Intriguingly, the results are forcing astronomers to consider that they may be seeing evidence of something unexpected at work in the universe. […]

  • Some black holes erase your past
    on February 21, 2018 at 2:13 pm

    Physicists insist on determinism: your past and present determine your future uniquely, per Einstein's equations of general relativity. They call this strong cosmic censorship. A mathematician found some types of black holes -- charged, non-rotating objects in an expanding universe -- that allow an observer inside the black hole to travel across a horizon into a place where the past is obliterated and there are an infinite number of possible futures for every initial state. […]

  • Astronomers reveal secrets of most distant supernova ever detected
    on February 20, 2018 at 3:24 pm

    Astronomers have confirmed the discovery of the most distant supernova ever detected -- a huge cosmic explosion that took place 10.5 billion years ago, or three-quarters the age of the Universe itself. […]