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.

  • Astronomers discover S0-2 star is single and ready for big Einstein test
    on February 22, 2018 at 3:36 pm

    A team of astronomers has found that S0-2 does not have a significant other after all, or at least one that is massive enough to get in the way of critical measurements that astronomers need to test Einstein's Theory of General Relativity. Up until now, it was thought that S0-2 may be a binary, a system where two stars circle around each other. […]

  • Amateur astronomer captures rare first light from massive exploding star
    on February 21, 2018 at 6:18 pm

    First light from a supernova is hard to capture; no one can predict where and when a star will explode. An amateur astronomer has now captured on film this first light, emitted when the exploding core hits the star's outer layers: shock breakout. Subsequent observations by astronomers using the Lick and Keck observatories helped identify it as a Type IIb supernova that slimmed down from 20 to 5 solar masses before exploding. […]

  • No relation between a supermassive black hole and its host galaxy?
    on February 20, 2018 at 5:30 pm

    Using ALMA to observe an active galaxy with a strong ionized gas outflow from the galactic center, a team has obtained a result making astronomers even more puzzled -- the team clearly detected CO gas associated with the galactic disk, yet they have also found that the CO gas which settles in the galaxy is not affected by the strong ionized gas outflow launched from the galactic center. […]

  • The starry sky shows nocturnal animals the way
    on February 19, 2018 at 3:39 pm

    Nocturnal animals can use the stars and the Milky Way to find their way during the darkest hours. […]

  • Scientists discover almost 100 new exoplanets
    on February 15, 2018 at 3:57 pm

    Based on data from NASA's K2 mission an international team of scientists have just confirmed nearly 100 new exoplanets, planets located outside our solar system. This brings the total number of new exoplanets found with the K2 mission up to almost 300. […]

  • Baby, it's cold outside: Understanding conditions for star formation
    on February 5, 2018 at 7:11 pm

    Researchers demonstrate how a gas escapes ice at an extremely cold temperature, providing insight about how stars form in interstellar clouds. […]

  • TRAPPIST-1 planets probably rich in water
    on February 5, 2018 at 6:43 pm

    A new study has found that planets orbiting the star TRAPPIST-1 are made mostly of rock, and some could hold more water than Earth. The planets' densities suggest that some of them could have up to 5 percent of their mass in the form of water. The hotter planets closest to their parent star are likely to have dense steamy atmospheres and the more distant ones probably have icy surfaces. […]

  • Atmospheres of exoplanets in TRAPPIST-1 habitable zone probed
    on February 5, 2018 at 4:33 pm

    Astronomers using the Hubble Space Telescope have conducted the first spectroscopic survey of the Earth-sized planets within the habitable zone around the nearby star TRAPPIST-1. Hubble reveals that at least three of the exoplanets (d, e, and f) do not seem to contain puffy, hydrogen-rich atmospheres similar to gaseous planets such as Neptune. The results, instead, favor more compact atmospheres like those of Earth, Venus, and Mars. […]

  • Supermassive black holes can feast on one star per year
    on February 1, 2018 at 7:14 pm

    Supermassive black holes in some galaxies can eat stars at a rate of one per year in the period following a galactic merger, helping explain a longstanding astronomical mystery about eccentric stellar orbits. […]

  • How black holes shape the cosmos
    on February 1, 2018 at 1:58 pm

    Astrophysicists have gained new insights into the formation and evolution of galaxies. They calculated how black holes influence the distribution of dark matter, how heavy elements are produced and distributed throughout the cosmos, and where magnetic fields originate. This was possible by developing and programming a new simulation model for the universe, which created the most extensive simulations of this kind to date. […]

  • Overabundance of massive stars in the Tarantula Nebula
    on January 31, 2018 at 4:03 pm

    Astronomers have revealed an 'astonishing' overabundance of massive stars in a neighboring galaxy. The discovery, made in a gigantic star-forming region of the Large Magellanic Cloud galaxy, has 'far-reaching' consequences for our understanding of how stars transformed the pristine Universe into the one we live in today. […]

  • Astronomers find one of the first stars formed in the Milky Way
    on January 31, 2018 at 2:56 pm

    Researchers have identified a star which is a key to the formation of the first chemical elements in the Galaxy. […]

  • Cosmic dust snakes and starbirth in Lupus 3
    on January 31, 2018 at 2:03 pm

    A dark cloud of cosmic dust snakes across this spectacular wide field image, illuminated by the brilliant light of new stars. This dense cloud is a star-forming region called Lupus 3, where dazzlingly hot stars are born from collapsing masses of gas and dust. […]

  • Stellar embryos in nearby dwarf galaxy contain surprisingly complex organic molecules
    on January 30, 2018 at 8:22 pm

    The nearby dwarf galaxy known as the Large Magellanic Cloud (LMC) is a chemically primitive place. Unlike the Milky Way, this semi-spiral collection of a few tens-of-billions of stars lacks our galaxy's rich abundance of heavy elements, like carbon, oxygen, and nitrogen. With such a dearth of heavy elements, astronomers predict that the LMC should contain a comparatively paltry amount of complex carbon-based molecules. Previous observations of the LMC seem to support that view. New observations have uncovered the surprisingly clear chemical 'fingerprints' of the complex organic molecules methanol, dimethyl ether, and methyl formate. Though previous observations found hints of methanol in the LMC, the latter two are unprecedented findings and stand as the most complex molecules ever conclusively detected outside of our galaxy. […]

  • Newborns or survivors? The unexpected matter found in hostile black hole winds
    on January 30, 2018 at 5:37 pm

    The existence of large numbers of molecules in winds powered by supermassive black holes at the centers of galaxies has puzzled astronomers since they were discovered more than a decade ago. Molecules trace the coldest parts of space, and black holes are the most energetic phenomena in the universe, so finding molecules in black hole winds was like discovering ice in a furnace. A new theory predicts the molecules are born in the winds with unique properties that enable them to adapt to and thrive in the hostile environment. […]

  • Astrochemists reveal the magnetic secrets of methanol
    on January 29, 2018 at 4:09 pm

    A team of scientists has solved an important puzzle in astrochemistry: how to measure magnetic fields in space using methanol, the simplest form of alcohol. Their results give astronomers a new way of investigating how massive stars are born. […]

  • Astronomers produce first detailed images of surface of giant star
    on January 23, 2018 at 3:20 pm

    An international team of astronomers has produced the first detailed images of the surface of a giant star outside our solar system, revealing a nearly circular, dust-free atmosphere with complex areas of moving material, known as convection cells or granules, according to a recent study. […]

  • New limit on the definition of a planet proposed
    on January 23, 2018 at 3:19 pm

    A planet can be no bigger than about 10 times the size of Jupiter, an astrophysicist has calculated. […]

  • Challenging existing models of black holes
    on January 19, 2018 at 1:59 pm

    A new study expands the scientific community's understanding of black holes in our galaxy and the magnetic fields that surround them. […]

  • Neutron-star merger yields new puzzle for astrophysicists
    on January 18, 2018 at 7:26 pm

    The afterglow from the distant neutron-star merger detected last August has continued to brighten - much to the surprise of astrophysicists studying the aftermath of the massive collision that took place about 138 million light years away and sent gravitational waves rippling through the universe. New observations indicate that the gamma ray burst unleashed by the collision is more complex than scientists initially imagined. […]

  • Odd behavior of star reveals lonely black hole hiding in giant star cluster
    on January 17, 2018 at 1:56 pm

    Astronomers using ESO's MUSE instrument on the Very Large Telescope in Chile have discovered a star in the cluster NGC 3201 that is behaving very strangely. It appears to be orbiting an invisible black hole with about four times the mass of the sun -- the first such inactive stellar-mass black hole found in a globular cluster and the first found by directly detecting its gravitational pull. […]

  • How massive can neutron stars be?
    on January 16, 2018 at 2:36 pm

    Astrophysicists set a new limit for the maximum mass of neutron stars: It cannot exceed 2.16 solar masses. […]

  • Archeology of our Milky Way's ancient hub
    on January 11, 2018 at 9:29 pm

    A new analysis of about 10,000 normal Sun-like stars in the Milky Way's bulge reveals that our galaxy’s hub is a dynamic environment of variously aged stars zipping around at different speeds. […]

  • No planets needed for rings around stars: Disk patterns can self-generate
    on January 11, 2018 at 8:50 pm

    A new study shows rings, arcs and spirals in disks around stars may not be caused by planets. They may self-generate. […]

  • Brown dwarfs found sprinkled among newborn stars in Orion Nebula
    on January 11, 2018 at 8:50 pm

    Astronomers have uncovered the largest known population of brown dwarfs sprinkled among newborn stars in the Orion Nebula. […]

  • Astronomers to build space telescope to explore nearby stars
    on January 11, 2018 at 3:05 am

    A new mission will launch a small satellite telescope into space to study the environment in other solar systems around the Galaxy's most common type of star. […]

  • Astronomers detect 'whirlpool' movement in earliest galaxies; swirling gases soon after Big Bang
    on January 10, 2018 at 6:15 pm

    Astronomers have looked back to a time soon after the Big Bang, and have discovered swirling gas in some of the earliest galaxies to have formed in the universe. These 'newborns' -- observed as they appeared nearly 13 billion years ago -- spun like a whirlpool, similar to our own Milky Way. This is the first time that it has been possible to detect movement in galaxies at such an early point in the universe's history. […]

  • Planets around other stars are like peas in a pod
    on January 9, 2018 at 7:19 pm

    A study of 909 planets and 355 stars reveals that, unlike our solar system, other planetary systems are distinguished by strict regularity. […]

  • Black hole research could aid understanding of how small galaxies evolve
    on January 9, 2018 at 7:19 pm

    Scientists have solved a cosmic mystery by finding evidence that supermassive black holes prevent stars forming in some smaller galaxies. […]

  • Special star is a Rosetta Stone for understanding the sun's variability and climate effect
    on January 5, 2018 at 5:40 pm

    Scientists have found a star that can help shed light on the physics underlying the solar dynamo. Researchers combined observations from the Kepler spacecraft with ground-based observations as far back as 1978, thereby reconstructing a 7.4-year cycle in this star. The star is almost identical to the Sun, except for the chemical composition. That makes it a Rosetta Stone for the study of stellar dynamos. […]