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.

  • Unknown treasure trove of planets found hiding in dust
    on December 7, 2018 at 4:27 pm

    The first unbiased survey of protoplanetary disks surrounding young stars in the Taurus star-forming region turned up a higher-than-expected number of disks with features suggesting nascent planets, according to a new study. […]

  • An exoplanet inflated like a balloon
    on December 6, 2018 at 7:12 pm

    Although helium is a rare element on Earth, it is ubiquitous in the universe. It is, after hydrogen, the main component of stars and gaseous giant planets. Despite its abundance, helium was only detected recently in the atmosphere of a gaseous giant by an international team. The team has observed for the first time how this gas escapes from the overheated atmosphere of an exoplanet, literally inflated with helium. […]

  • Combination of space-based and ground-based telescopes reveals more than 100 exoplanets
    on December 3, 2018 at 4:16 pm

    Astronomers using a combination of ground and space based telescopes have reported more than 100 extrasolar planets (exoplanets) in only three months. These planets are quite diverse and expected to play a large role in developing the research field of exoplanets and life in the Universe. […]

  • Newly discovered supernova complicates origin story theories
    on November 30, 2018 at 2:01 pm

    A supernova discovered by an international group of astronomers provides an unprecedented look at the first moments of a violent stellar explosion. The light from the explosion's first hours showed an unexpected pattern, which astronomers analyzed to reveal that the genesis of these phenomena is even more mysterious than previously thought. […]

  • All of the starlight ever produced by the observable universe measured
    on November 29, 2018 at 7:24 pm

    From their laboratories on a rocky planet dwarfed by the vastness of space, scientists have collaborated to measure all of the starlight ever produced throughout the history of the observable universe. […]

  • Hubble uncovers thousands of globular star clusters scattered among galaxies
    on November 29, 2018 at 4:41 pm

    Astronomers using Hubble found a whopping 22,426 globular star clusters in a nearby neighborhood of galaxies. […]

  • Climate of small star TRAPPIST 1's seven intriguing worlds
    on November 21, 2018 at 7:24 pm

    New research from astronomers gives updated climate models for the seven planets around the star TRAPPIST-1. The work also could help astronomers more effectively study planets around stars unlike our sun, and better use the resources of the James Webb Space Telescope. […]

  • Exoplanet stepping stones
    on November 20, 2018 at 8:59 pm

    New observations of a young gas giant demonstrate the power of a ground-based method for searching for signatures of life. […]

  • Scientists discover new 'pinwheel' star system
    on November 20, 2018 at 12:36 pm

    An international team of scientists has discovered a new, massive star system -- one that also challenges existing theories of how large stars eventually die.  &nbs […]

  • Astronomers find possible elusive star behind supernova
    on November 15, 2018 at 7:49 pm

    Astronomers may have finally uncovered the long-sought progenitor to a specific type of exploding star by sifting through NASA Hubble Space Telescope archival data. The supernova, called a Type Ic, is thought to detonate after its massive star has shed or been stripped of its outer layers of hydrogen and helium. […]

  • Astronomers detect once-in-a-lifetime gamma rays
    on November 15, 2018 at 7:49 pm

    It's not every day you get to observe a gamma-ray binary system. In fact, it's a once-in-a-lifetime experience comparable to seeing Halley's Comet or a solar eclipse. […]

  • Trans-galactic streamers feeding most luminous galaxy in the universe
    on November 15, 2018 at 7:48 pm

    ALMA data show the most luminous galaxy in the universe has been caught in the act of stripping away nearly half the mass from at least three of its smaller neighbors. […]

  • Cold Super-Earth found orbiting closest single star to Sun
    on November 14, 2018 at 6:20 pm

    The nearest single star to the Sun hosts an exoplanet at least 3.2 times as massive as Earth -- a so-called super-Earth. One of the largest observing campaigns to date using data from a world-wide array of telescopes has revealed this frozen, dimly lit world. The newly discovered planet is the second-closest known exoplanet to the Earth. Barnard's star is the fastest moving star in the night sky. […]

  • Gravitational waves from a merged hyper-massive neutron star
    on November 14, 2018 at 3:44 pm

    For the first time astronomers have detected gravitational waves from a merged, hyper-massive neutron star. […]

  • Earth's magnetic field measured using artificial stars at 90 kilometers altitude
    on November 14, 2018 at 3:40 pm

    In 2011, researchers proposed that artificial guide stars could be used to measure the Earth's magnetic field in the mesosphere. An international group of scientists has recently managed to do this with a high degree of precision. The technique may also help to identify magnetic structures in the solid Earth's lithosphere, to monitor space weather, and to measure electrical currents in the part of the atmosphere called ionosphere. […]

  • Aging a flock of stars in the Wild Duck Cluster
    on November 8, 2018 at 6:41 pm

    The way they move belies the true ages of the almost 3,000 stars populating one of the richest star clusters known. Astronomers recently discovered the stars all were born in the same generation, solving a long-standing puzzle about how stars evolve. […]

  • Ultra-hot gas around remnants of sun-like stars
    on November 7, 2018 at 1:25 pm

    Solving a decades-old mystery, an international team of astronomers have discovered an extremely hot magnetosphere around a white dwarf, a remnant of a star like our sun. […]

  • Elusive star has origins close to Big Bang
    on November 5, 2018 at 9:09 pm

    Astronomers have found what could be one of the universe's oldest stars, made almost entirely of materials spewed from the Big Bang. […]

  • Laser tech could be fashioned into Earth's 'porch light' to attract alien astronomers
    on November 5, 2018 at 6:28 pm

    If extraterrestrial intelligence exists somewhere in our galaxy, a new study proposes that laser technology on Earth could, in principle, be fashioned into something of a planetary porch light -- a beacon strong enough to attract attention from as far as 20,000 light years away. […]

  • Laboratory experiments probe the formation of stars and planets
    on November 5, 2018 at 3:54 pm

    The cosmos is a void dotted with stars and an ever-increasing number of newly-observed planets beyond our solar system. Yet, how these stars and planets formed out of clouds of interstellar dust and gas remains mysterious. The study of black holes provides clues that could help solve this mystery. […]

  • Hubble reveals cosmic Bat Shadow in the Serpent's Tail
    on October 31, 2018 at 6:14 pm

    The NASA/ESA Hubble Space Telescope has captured part of the wondrous Serpens Nebula, lit up by the star HBC 672. This young star casts a striking shadow -- nicknamed the Bat Shadow -- on the nebula behind it, revealing telltale signs of its otherwise invisible protoplanetary disc. […]

  • Thirty years in the life of supernova 1987A
    on October 31, 2018 at 4:48 pm

    Astronomers have observed the aftermath of Supernova 1987A over a 25-year period, from 1992 to 2017. […]

  • The ghost of Cassiopeia
    on October 25, 2018 at 3:31 pm

    About 550 light-years away in the constellation of Cassiopeia lies IC 63, a stunning and slightly eerie nebula. Also known as the ghost of Cassiopeia, IC 63 is being shaped by radiation from a nearby unpredictably variable star, Gamma Cassiopeiae, which is slowly eroding away the ghostly cloud of dust and gas. This celestial ghost makes the perfect backdrop for the upcoming feast of All Hallow's Eve -- better known as Halloween. […]

  • The pirate of the southern skies
    on October 24, 2018 at 3:22 pm

    Astronomers have observed the active star-forming region NGC 2467 -- sometimes referred to as the Skull and Crossbones Nebula. The new image was captured as part of the ESO Cosmic Gems Programme, which makes use of the rare occasions when observing conditions are not suitable for gathering scientific data. […]

  • New insight into why galaxies stop forming stars
    on October 23, 2018 at 10:54 pm

    Galaxy clusters are rare regions of the universe consisting of hundreds of galaxies containing trillions of stars. It has long been known that when a galaxy falls into a cluster, star formation is fairly rapidly shut off in a process known as 'quenching.' A new study has made the best measurement yet of the quenching timescale, measuring how it varies across 70 percent of the history of the universe. […]

  • Ultra-close stars discovered inside a planetary nebula
    on October 23, 2018 at 5:05 pm

    Astronomers have discovered two stars in a binary pair that complete an orbit around each other in a little over three hours, residing in the planetary nebula M3-1. Remarkably, the stars could drive a nova explosion, an entirely unexpected event based on our current understanding of binary star evolution. […]

  • Gravitational waves could soon accurately measure universe's expansion
    on October 22, 2018 at 8:21 pm

    Scientists estimate that given how quickly LIGO researchers saw the first neutron star collision, they could have a very accurate measurement of the rate of the expansion of the universe within five to 10 years. […]

  • Superflares from young red dwarf stars imperil planets
    on October 18, 2018 at 6:12 pm

    Flares from the youngest red dwarfs surveyed are 100 to 1,000 times more energetic than when the stars are older. This younger age is when terrestrial planets are forming around their stars. […]

  • Supermassive black holes and supercomputers
    on October 17, 2018 at 12:08 pm

    The universe's deep past is beyond the reach of even the mighty Hubble Space Telescope. But a new review explains how creation of the first stars and galaxies is nevertheless being mapped in detail, with the aid of computer simulations and theoretical models -- and how a new generation of supercomputers and software is being built that will fill in the gaps. […]

  • All in the family: Kin of gravitational wave source discovered
    on October 16, 2018 at 5:20 pm

    According to new research, an object named GRB150101B -- first reported as a gamma-ray burst in 2015 -- shares remarkable similarities with GW170817, the neutron star merger discovered by LIGO and observed by multiple light-gathering telescopes in 2017. The new analysis suggests that these two separate objects may in fact be directly related. […]