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.

  • CALET succeeds in direct measurements of cosmic-ray electron spectrum up to 4.8 TeV
    on July 19, 2018 at 1:44 pm

    Researchers have succeeded in the direct, high-precision measurements of cosmic-ray electron spectrum up to 4.8 TeV, based on observations with the Calorimetric Electron Telescope (CALET). Observations by CALET are expected to reveal the mysteries of cosmic-rays and nature of dark matter in the future. […]

  • NASA's new mini satellite will study Milky Way's halo
    on July 18, 2018 at 9:03 pm

    A new mission called HaloSat will help scientists search for the universe's missing matter by studying X-rays from hot gas surrounding the Milky Way galaxy. […]

  • Planck: Final data from the mission lends support to the standard cosmological model
    on July 18, 2018 at 2:47 pm

    With its increased reliability and its data on the polarization of relic radiation, the Planck mission corroborates the standard cosmological model with unrivaled precision for these parameters, even if some anomalies still remain. […]

  • Supersharp images from new VLT adaptive optics
    on July 18, 2018 at 12:22 pm

    ESO's Very Large Telescope (VLT) has achieved first light with a new adaptive optics mode called laser tomography -- and has captured remarkably sharp test images of the planet Neptune and other objects. The MUSE instrument working with the GALACSI adaptive optics module, can now use this new technique to correct for turbulence at different altitudes in the atmosphere. It is now possible to capture images from the ground at visible wavelengths that are sharper than those from the NASA/ESA Hubble Space Telescope. […]

  • VERITAS supplies critical piece to neutrino discovery puzzle
    on July 12, 2018 at 3:45 pm

    The VERITAS array has confirmed the detection of gamma rays from the vicinity of a supermassive black hole. While these detections are relatively common for VERITAS, this black hole is potentially the first known astrophysical source of high-energy cosmic neutrinos, a type of ghostly subatomic particle. […]

  • Hubble and Gaia team up to fuel cosmic conundrum
    on July 12, 2018 at 3:44 pm

    Using the power and synergy of two space telescopes, astronomers have made the most precise measurement to date of the universe's expansion rate. […]

  • Could gravitational waves reveal how fast our universe is expanding?
    on July 12, 2018 at 3:44 pm

    An new study finds black holes and neutron stars are key to measuring our expanding universe. […]

  • Centenary of cosmological constant lambda
    on July 11, 2018 at 2:57 pm

    Physicists are now celebrating the 100th anniversary of the cosmological constant. On this occasion, two recent articles highlight its role in modern physics and cosmology. Before becoming widely accepted, the cosmological constant had to undergo many discussions about its necessity, its value and its physical essence. Today, there are still unresolved problems in understanding the deep physical nature of the phenomena associated with the cosmological constant. […]

  • Plasma-spewing quasar shines light on universe's youth, early galaxy formation
    on July 9, 2018 at 2:11 pm

    Astronomers found a quasar with the brightest radio emission ever observed in the early universe, due to it spewing out a jet of extremely fast-moving material. Scientists have revealed in unprecedented detail the jet shooting out of a quasar that formed within the universe's first billion years of existence. […]

  • Even phenomenally dense neutron stars fall like a feather
    on July 4, 2018 at 5:53 pm

    Astronomers have given one of Einstein's predictions on gravity its most stringent test yet. By precisely tracking the meanderings of three stars in a single system -- two white dwarf stars and one ultra-dense neutron star -- the researchers determined that even phenomenally compact neutron stars 'fall' in the same manner as their less-dense counterparts, an aspect of nature called the 'Strong Equivalence Principle.' […]

  • A galactic test will clarify the existence of dark matter
    on June 25, 2018 at 11:27 pm

    Researchers used sophisticated computer simulations to devise a test that could answer a burning question in astrophysics: is there really dark matter? Or does Newton's gravitational law need to be modified? The new study shows that the answer is hidden in the motion of the stars within small satellite galaxies swirling around the Milky Way. […]

  • Recipe for star clusters
    on June 25, 2018 at 11:26 pm

    Clusters of stars across the vast reaches of time and space of the entire universe were all created the same way, researchers have determined. […]

  • 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? […]

  • Last of universe's missing ordinary matter
    on June 20, 2018 at 7:00 pm

    Researchers have helped to find the last reservoir of ordinary matter hiding in the universe. […]

  • 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. […]

  • Dark inflation opens up a gravitational window onto the first moments after the Big Bang
    on June 7, 2018 at 2:09 pm

    Dark matter and dark energy may have driven inflation, the exponential expansion of the Universe moments after the Big Bang. A new cosmological model proposed by physicists, which takes dark inflation into account, is the first to outline a precise chronology of the main events during the early history of our Universe. The model makes a spectacular prediction: that it should be possible to detect gravitational waves that were formed just fractions of a second after the creation of spacetime. […]

  • 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. […]

  • Data discrepancies may affect understanding of the universe
    on June 5, 2018 at 9:24 pm

    One of the unsolved mysteries in modern science is why the expansion of the universe appears to be accelerating. As astrophysicists look for answers in the mountains of data gathered from astronomical observations, they are finding that inconsistencies in that data might ultimately lead to the truth. […]

  • Alien apocalypse: Can any civilization make it through climate change?
    on June 4, 2018 at 9:26 pm

    Does the universe contain planets with truly sustainable civilizations? Or does every civilization that may have arisen in the cosmos last only a few centuries before it falls to the climate change it triggers? Astrophysicists have developed a mathematical model to illustrate how a technologically advanced population and its planet might develop together, putting climate change in a cosmic context. […]

  • ALMA and VLT find too many massive stars in starburst galaxies, near and far
    on June 4, 2018 at 3:25 pm

    Astronomers using ALMA and the VLT have discovered that both starburst galaxies in the early Universe and a star-forming region in a nearby galaxy contain a much higher proportion of massive stars than is found in more peaceful galaxies. These findings challenge current ideas about how galaxies evolved, changing our understanding of cosmic star-formation history and the build up of chemical elements. […]

  • 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. […]

  • 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. […]

  • 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. […]

  • Could a multiverse be hospitable to life?
    on May 14, 2018 at 12:39 pm

    A multiverse -- where our universe is only one of many -- might not be as inhospitable to life as previously thought, according to new research. […]

  • Taming the multiverse: Stephen Hawking's final theory about the big bang
    on May 2, 2018 at 1:46 pm

    Professor Stephen Hawking's final theory on the origin of the universe has just been published. […]

  • 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. […]