Stars – Science

Stars News -- ScienceDaily News about Stars. Read science articles and see images on the birth of monstrous stars, brown dwarfs and red giants. Consider stellar evolution and more.

  • Radioactive elements in Cassiopeia A suggest a neutrino-driven explosion
    on June 22, 2017 at 12:27 pm

    Stars exploding as supernovae are the main sources of heavy chemical elements in the Universe. In particular, radioactive atomic nuclei are synthesized in the hot, innermost regions during the explosion and can thus serve as probes of the unobservable physical processes that initiate the blast. Using elaborate computer simulations, a team of researchers was able to explain the recently measured spatial distributions of radioactive titanium and nickel in Cassiopeia A, a roughly 340 year old gas remnant of a nearby supernova. […]

  • Massive dead disk galaxy challenges theories of galaxy evolution
    on June 21, 2017 at 6:51 pm

    By combining the power of a 'natural lens' in space with the capability of NASA's Hubble Space Telescope, astronomers made a surprising discovery -- the first example of a compact yet massive, fast-spinning, disk-shaped galaxy that stopped making stars only a few billion years after the big bang. […]

  • Star's birth may have triggered another star birth, astronomers say
    on June 20, 2017 at 6:06 pm

    Radio images give new evidence that a jet of material from one young star may have triggered the gas collapse that started another young star. […]

  • New branch in family tree of exoplanets discovered
    on June 19, 2017 at 4:02 pm

    Researchers have classified exoplanets in much the same way that biologists identify new animal species. […]

  • Orion blazing bright in radio light
    on June 15, 2017 at 3:09 pm

    Astronomers have created the largest image ever of the dense band of star-forming gas that weaves its way through the northern portion of the Orion Nebula. […]

  • Chaotically magnetized cloud is no place to build a star, or is it?
    on June 14, 2017 at 3:28 pm

    Astronomers have discovered a surprisingly weak and wildly disorganized magnetic field very near a newly emerging protostar. These observations suggest that the impact of magnetic fields on star formation is more complex than previously thought. […]

  • Low-mass stars always born with a sibling: Many, like our sun, split up
    on June 14, 2017 at 1:19 pm

    Though astronomers have long known that many if not most stars are binaries, the question has always been, Were they born that way, or did one star capture another? Astronomers teamed up to systematically study very young stars inside their nest eggs, called dense cores, in the Perseus molecular cloud and concluded that all sunlike stars are born as wide binaries. Most subsequently split up, while the rest become tight binaries. […]

  • VST captures Eagle Nebula and close companions
    on June 13, 2017 at 2:21 pm

    Two of the sky's more famous residents share the stage with a lesser-known neighbor in an enormous new three gigapixel image from ESO's VLT Survey Telescope (VST). On the right lies Sharpless 2-54, the iconic Eagle Nebula is in the center, and the Omega Nebula to the left. This cosmic trio makes up just a portion of a vast complex of gas and dust within which new stars are springing to life and illuminating their surroundings. […]

  • ALMA hears birth cry of a massive baby star
    on June 12, 2017 at 3:54 pm

    Astronomers have determined how the enigmatic gas flow from a massive baby star is launched. The team used ALMA to observe the baby star and obtained clear evidence of rotation in the outflow. The motion and the shape of the outflow indicate that the interplay of centrifugal and magnetic forces in a disk surrounding the star plays a crucial role in the star's birth cry. […]

  • Hubble applauds waltzing dwarfs
    on June 9, 2017 at 11:31 pm

    This seemingly unspectacular series of dots with varying distances between them actually shows the slow waltz of two brown dwarfs. The image is a stack of 12 images made over the course of three years with the NASA/ESA Hubble Space Telescope. Using high-precision astrometry, astronomers tracked the two components of the system as they moved both across the sky and around each other. […]

  • Century-old relativity experiment used to measure a white dwarf's mass
    on June 7, 2017 at 6:26 pm

    Astronomers have used the sharp vision of NASA’s Hubble Space Telescope to repeat a century-old test of Einstein’s general theory of relativity. The team measured the mass of white dwarf Stein 2051 B, the burned-out remnant of a normal star, by seeing how much it deflects the light from a background star. The gravitational microlensing method data provide a solid estimate of the white dwarf’s mass and yield insights into theories of the structure and composition of the burned-out star. […]

  • New confirmation of Einstein's General Theory of Relativity
    on June 7, 2017 at 4:38 pm

    Albert Einstein predicted that whenever light from a distant star passes by a closer object, gravity acts as a kind of magnifying lens, brightening and bending distant starlight. Yet, Einstein added, 'There is no hope of observing this phenomenon directly.' Now, researchers have done just that, saying that the discovery opens a new window to understanding 'the history and evolution of galaxies such as our own.' […]

  • Jackpot! Cosmic magnifying-glass effect captures universe's brightest galaxies
    on June 6, 2017 at 7:57 pm

    Boosted by natural magnifying lenses in space, NASA's Hubble Space Telescope has captured unique close-up views of the universe's brightest infrared galaxies, which are as much as 10,000 times more luminous than our Milky Way. […]

  • Mini-flares potentially jeopardize habitability of planets circling red dwarf stars
    on June 6, 2017 at 4:33 pm

    Solar flares and associated eruptions can trigger auroras on Earth or, more ominously, damage satellites and power grids. Could flares on cool, red dwarf stars cause even more havoc to orbiting planets, even rendering them uninhabitable? To help answer that question, astronomers sought to find out how many flares such stars typically unleash. […]

  • Hubble's tale of two exoplanets: Nature vs. nurture
    on June 5, 2017 at 7:45 pm

    Is it a case of nature versus nurture when it comes to two 'cousin' exoplanets? In a unique experiment, scientists used NASA's Hubble Space Telescope to study two 'hot Jupiter' exoplanets. Because these planets are virtually the same size and temperature, and orbit around nearly identical stars at the same distance, the team hypothesized that their atmospheres should be alike. What they found surprised them. […]

  • Dying stars give newborn black holes a swift kick, study shows
    on June 5, 2017 at 4:41 pm

    Investigators reanalyzed the merging black holes detected by LIGO (Laser Interferometer Gravitational Wave Observatory) on Dec. 26, 2016, and drew new insights about what happens when massive stars die and transform into black holes. […]

  • A planet hotter than most stars
    on June 5, 2017 at 3:09 pm

    A newly discovered Jupiter-like world is so hot that it’s stretching the definition of the word “planet.&rdquo […]

  • ALMA returns to Boomerang Nebula
    on June 5, 2017 at 3:09 pm

    A companion star crashing into a red giant star may explain the chilling power to the Boomerang Nebula. […]

  • Hubble 'traps' a vermin galaxy
    on June 2, 2017 at 6:38 pm

    A new Hubble image shows a distant galaxy as it begins to align with and pass behind a star sitting nearer to us within the Milky Way. […]

  • Cold brown dwarf discovered close to our solar system
    on June 2, 2017 at 3:28 pm

    A new citizen-science tool released earlier this year to help astronomers pinpoint new worlds lurking in the outer reaches of our solar system has already led to a discovery: a brown dwarf a little more than 100 light years away from the Sun. Just six days after the launch of the Backyard Worlds: Planet 9 website, four users alerted the science team to the curious object, whose presence has since been confirmed via telescope. […]

  • LIGO detects gravitational waves for third time
    on June 1, 2017 at 4:39 pm

    The Laser Interferometer Gravitational-wave Observatory has made a third detection of gravitational waves, ripples in space and time, demonstrating that a new window in astronomy has been firmly opened. As was the case with the first two detections, the waves were generated when two black holes collided to form a larger black hole. […]

  • Surface gravity on many exoplanets similar to that of Earth, study finds
    on June 1, 2017 at 1:55 pm

    A recent statistical study has revealed that exoplanets with a mass of between 1 and 100 times the mass of Earth have a surface gravity surprisingly similar to terrestrial gravity. […]

  • Giant ringed planet likely cause of mysterious eclipses
    on May 31, 2017 at 1:25 pm

    A giant gas planet -- up to 50x the mass of Jupiter, encircled by a ring of dust -- is likely hurtling around a star over 1000 light years away from Earth, according to international team of astronomers. […]

  • Do stars fall quietly into black holes, or crash into something utterly unknown?
    on May 30, 2017 at 3:51 pm

    Astronomers have put a basic principle of black holes to the test, showing that matter completely vanishes when pulled in. Their results constitute another successful test for Albert Einstein's General Theory of Relativity. […]

  • The big star that couldn't become a supernova
    on May 25, 2017 at 6:15 pm

    For the first time in history, astronomers have been able to watch as a dying star was reborn as a black hole. It went out with a whimper instead of a bang. […]

  • Just after the Big Bang: Galaxies created stars a hundred times faster now
    on May 24, 2017 at 5:11 pm

    A team of astronomers has discovered a new kind of galaxy which, although extremely old -- formed less than a billion years after the Big Bang -- creates stars more than a hundred times faster than our own Milky Way. […]

  • How most antimatter in the Milky Way forms: Mystery solved
    on May 24, 2017 at 2:45 pm

    Astrophysicists have now shown how most of the antimatter in the Milky Way forms. […]

  • Volunteers help find star that exploded 970 million years ago, predating the dinosaurs
    on May 24, 2017 at 2:15 pm

    Online volunteers have helped astronomers find a star that exploded 970 million years ago, predating the dinosaurs' time on Earth. […]

  • Biggest ever simulations help uncover the history of the galaxy
    on May 24, 2017 at 12:46 pm

    Thousands of processors, terabytes of data, and months of computing time have helped a group of researchers in Germany create some of the largest and highest resolution simulations ever made of galaxies like our Milky Way. […]

  • Scientists take first tentative steps to explore potential climate of Proxima B
    on May 15, 2017 at 11:27 pm

    The quest to discover whether a planet orbiting our closest neighboring star, Proxima Centauri (4.2 light years or 25 trillion miles from Earth), has the potential to support life has taken a new, exhilarating twist. […]