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.

  • New NASA study improves search for habitable worlds
    on October 19, 2017 at 10:18 pm

    New NASA research is helping to refine our understanding of candidate planets beyond our solar system that might support life. […]

  • Seeing the light of neutron star collisions
    on October 16, 2017 at 4:21 pm

    When two neutron stars collided on Aug. 17, a widespread search for electromagnetic radiation from the event led to observations of light from the afterglow of the explosion, finally connecting a gravitational-wave-producing event with conventional astronomy using light, according to an international team of astronomers. […]

  • Hubble observes source of gravitational waves for the first time
    on October 16, 2017 at 4:21 pm

    The NASA/ESA Hubble Space Telescope has observed for the first time the source of a gravitational wave, created by the merger of two neutron stars. This merger created a kilonova -- an object predicted by theory decades ago -- that ejects heavy elements such as gold and platinum into space. This event also provides the strongest evidence yet that short duration gamma-ray bursts are caused by mergers of neutron stars. […]

  • Gamma-ray burst detection just what researchers exclusively predicted
    on October 16, 2017 at 2:28 pm

    More than a month before a game-changing detection of a short gamma-ray burst, scientists predicted such a discovery would occur. […]

  • Astronomers strike cosmic gold, confirm origin of precious metals in neutron star mergers
    on October 16, 2017 at 2:28 pm

    What many thought would be a long way off, the detection of gravitational waves from the merger of binary neutron stars, actually happened on Aug. 17. The observation of a blue and then red glow from the radioactive debris cloud left behind matched simulations of what the merger should look like, proving that such mergers are the source of most of the very heavy elements in the universe, including gold. […]

  • Astronomers find potential solution into how planets form
    on October 13, 2017 at 4:32 pm

    The quest to discover how planets found in the far reaches of the universe are born has taken a new, crucial twist. […]

  • Star Dust Helps Explain Mysterious Dimming Star
    on October 13, 2017 at 1:19 pm

    Astronomers are working to understand the mysterious dimming of Tabby's Star. The astronomers report that space dust orbiting the star -- not alien megastructures -- is the likely cause of the star's long-term dimming. […]

  • Measurement promises complete picture of Milky Way
    on October 12, 2017 at 6:34 pm

    Distance measured out to the far side of our Milky Way means that radio astronomers now can work on producing an accurate map of the full extent of our galaxy's structure for the first time. […]

  • Devourer of planets? Astronomers dub star 'Kronos'
    on October 12, 2017 at 4:28 pm

    'Kronos' is enhanced in metals and other rock-forming elements but not in volatiles, prompting a team of researchers to conclude that it absorbed as much as 15 Earth masses worth of rocky planets. Its twin, 'Krios,' does not show this unusual pattern of enhancement. […]

  • Giant exoplanet hunters: Look for debris disks
    on October 11, 2017 at 5:52 pm

    There's no map showing all the billions of exoplanets hiding in our galaxy -- they're so distant and faint compared to their stars, it's hard to find them. Now, astronomers hunting for new worlds have established a possible signpost for giant exoplanets. […]

  • Scientists discover one of the most luminous 'new stars' ever
    on October 11, 2017 at 4:03 pm

    Astronomers have discovered possibly the most luminous 'new star' ever -- a nova discovered in the direction of one of our closest neighboring galaxies: The Small Magellanic Cloud. […]

  • Scientists discover more about the ingredients for star formation
    on October 10, 2017 at 2:58 pm

    In the local universe close to us, about 70 percent of the hydrogen gas is found in individual atoms, while the rest is in molecules. Astronomers had expected that as they looked back in time, younger galaxies would contain more and more molecular hydrogen until it dominated the gas in the galaxy. Instead, they found that atomic hydrogen makes up the majority of gas in younger galaxies too. […]

  • Violent helium reaction on white dwarf surface triggers supernova explosion
    on October 5, 2017 at 3:11 pm

    Astronomers have found solid evidence about what triggered a star to explode, which will contribute to a further understanding of supernova history and behavior. […]

  • Milky Way's 'most-mysterious star' continues to confound
    on October 4, 2017 at 11:05 pm

    In 2015, a star called KIC 8462852 caused quite a stir in and beyond the astronomy community due to a series of rapid, unexplained dimming events. The latest findings from astronomers take a longer look at the star, going back to 2006 -- before its strange behavior was detected by Kepler. […]

  • Surface helium detonation spells end for white dwarf
    on October 4, 2017 at 6:01 pm

    Researchers have found evidence that the brightest stellar explosions in our Universe could be triggered by helium nuclear detonation near the surface of a white dwarf star. […]

  • ALMA and Rosetta detect Freon-40 in space dashing hopes that molecule may be marker of life
    on October 2, 2017 at 3:28 pm

    Observations made with the Atacama Large Millimeter/submillimeter Array (ALMA) and ESA's Rosetta mission, have revealed the presence of the organohalogen Freon-40 in gas around both an infant star and a comet. Organohalogens are formed by organic processes on Earth, but this is the first ever detection of them in interstellar space. This discovery suggests that organohalogens may not be as good markers of life as had been hoped, but that they may be significant components of the material from which planets form. […]

  • Supersonic gas streams left over from the Big Bang drive massive black hole formation
    on September 28, 2017 at 6:20 pm

    A super-computer simulation by an international team of researchers has shown the formation of a rapidly growing star from supersonic gas streams in the early universe left over from the Big Bang. The star ends its life with catastrophic collapse to leave a black hole with a mass of 34,000 times that of the Sun. […]

  • Bursting with starbirth
    on September 28, 2017 at 2:12 pm

    This oddly shaped galactic spectacle is bursting with brand new stars. The pink fireworks in this image taken with the NASA/ESA Hubble Space Telescope are regions of intense star formation, triggered by a cosmic-scale collision. The huge galaxy in this image, NGC 4490, has a smaller galaxy in its gravitational grip and is feeling the strain. […]

  • The strange structures of the Saturn nebula
    on September 27, 2017 at 1:33 pm

    The spectacular planetary nebula NGC 7009, or the Saturn Nebula, emerges from the darkness like a series of oddly-shaped bubbles, lit up in glorious pinks and blues. This colourful image was captured by the MUSE instrument on ESO's Very Large Telescope (VLT). The map -- which reveals a wealth of intricate structures in the dust, including shells, a halo and a curious wave-like feature -- will help astronomers understand how planetary nebulae develop their strange shapes and symmetries. […]

  • Oxygen-deficient dwarf galaxy hints at makings of early universe
    on September 25, 2017 at 5:29 pm

    Astronomers have long searched for understanding of how the universe assembled from simplicity to complexity. A newly studied tiny galaxy is providing clues. […]

  • Secrets of bright, rapidly spinning star revealed
    on September 18, 2017 at 3:18 pm

    Almost 50 years after it was first predicted that rapidly rotating stars would emit polarized light, scientists have succeeded in observing the phenomenon for the first time. They have now detected the polarized light from Regulus, one of the brightest stars in the night sky. […]

  • Light on exoplanets may be quite different from Earth: Different photosynthesis?
    on September 15, 2017 at 9:00 pm

    Researchers have proposed a prediction that red-edge could be observed as on the Earth even on exoplanets around M-dwarfs. They pointed out that the first oxgenic photorophs are most likely to have evolved underwater to utilize visible light just like what had happened in the primordial ocean on the Earth. They examined light adaptation mechanisms of visible- and IR-radiation-using phototrophs required for adapting to land habitats and found out that IR-using phototrophs struggle to adapt to changing light condition at the boundary of water and land surface. […]

  • Star formation influenced by local environmental conditions
    on September 15, 2017 at 2:36 pm

    Three scientists have carried out extensive computer simulations related to star formation. They conclude that the present idealized models are lacking when it comes to describing details in the star formation process. […]

  • The return of the comet-like exoplanet
    on September 14, 2017 at 7:23 pm

    Astronomers have focused the Hubble Space Telescope on an exoplanet that had already been seen losing its atmosphere, which forms an enormous cloud of hydrogen, giving the planet the appearance of a giant comet. During earlier observations, it was not possible to cover the whole cloud, whose shape was predicted by numerical simulations. Thanks to these new observations, the scientists have finally been able to confirm the initial predictions. […]

  • A one-of-a-kind star found to change over decades
    on September 12, 2017 at 7:48 pm

    Researchers recently found new evidence that lends support to an existing theory of how the unusual star emits energy. […]

  • Explosive birth of stars swells galactic cores
    on September 11, 2017 at 3:25 am

    Astronomers found that active star formation upswells galaxies, like yeast helps bread rise. Using three powerful telescopes on the ground and in orbit, they observed galaxies from 11 billion years ago and found explosive formation of stars in the cores of galaxies. This suggests that galaxies can change their own shape without interaction with other galaxies. […]

  • Are we being watched? Tens of other worlds could spot the Earth
    on September 9, 2017 at 12:55 am

    Scientists have turned exoplanet-hunting on its head, in a study that instead looks at how an alien observer might be able to detect Earth using our own methods. They find that at least nine exoplanets are ideally placed to observe transits of Earth. […]

  • Accretion-powered pulsar reveals unique timing glitch
    on September 6, 2017 at 2:36 pm

    The discovery of the largest timing irregularity yet observed in a pulsar is the first confirmation that pulsars in binary systems exhibit the strange phenomenon known as a 'glitch.' […]

  • Unique study tests fundamental laws of physics
    on September 5, 2017 at 4:54 pm

    A study that will ‘test our understanding of how the Universe works, particularly outside the relatively narrow confines of our planet’ is being undertaken by an international team of researchers. […]

  • 'Extreme' telescopes find the second-fastest-spinning pulsar
    on September 5, 2017 at 4:32 pm

    By following up on mysterious high-energy sources mapped by NASA's Fermi Gamma-ray Space Telescope, a Netherlands-based radio telescope has discovered a new pulsar, the second fastest-spinning known. […]