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.

  • Dawn of a galactic collision
    on December 14, 2017 at 7:07 pm

    A riot of color and light dances through this peculiarly shaped galaxy, NGC 5256. Its smoke-like plumes are flung out in all directions and the bright core illuminates the chaotic regions of gas and dust swirling through the galaxy's center. Its odd structure is due to the fact that this is not one galaxy, but two -- in the process of a galactic collision. […]

  • Spanning disciplines in the search for life beyond Earth
    on December 13, 2017 at 5:47 pm

    Following a gold rush of exoplanet discovery, the next step in the search for life is determining which of the known exoplanets are proper candidates for life -- and for this, a cross-disciplinary approach is essential. […]

  • Mars mission sheds light on habitability of distant planets
    on December 13, 2017 at 5:47 pm

    Insights from NASA's Mars Atmosphere and Volatile Evolution, or MAVEN, mission about the loss of the Red Planet's atmosphere can help scientists understand the habitability of rocky planets orbiting other stars. […]

  • Stellar nursery blooms into view
    on December 13, 2017 at 2:55 pm

    The OmegaCAM camera on ESO's VLT Survey Telescope has captured this glittering view of the stellar nursery called Sharpless 29. Many astronomical phenomena can be seen in this giant image, including cosmic dust and gas clouds that reflect, absorb, and re-emit the light of hot young stars within the nebula. […]

  • Hubble's celestial snow globe
    on December 12, 2017 at 7:19 pm

    It's beginning to look a lot like the holiday season in this Hubble Space Telescope image of a blizzard of stars, which resembles a swirling snowstorm in a snow globe. The stars are residents of the globular star cluster Messier 79 (also known as M79 or NGC 1904), located 41,000 light-years from Earth, in the constellation Lepus. […]

  • Galaxy growth in a massive halo in the first billion years of cosmic history
    on December 7, 2017 at 7:07 pm

    Observations of two galaxies made with the National Science Foundation-funded Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope suggest that large galaxies formed faster than scientists had previously thought. […]

  • Heavy metal: How first supernovae altered early star formation
    on December 6, 2017 at 7:23 pm

    An international team of researchers ran multi-scale, multi-physics 2-D and 3-D simulations to illustrate how heavy metals expelled from exploding supernovae held the first stars in the universe regulate subsequent star formation and influence the appearance of galaxies in the process. […]

  • ALMA finds massive primordial galaxies swimming in vast ocean of dark matter
    on December 6, 2017 at 6:20 pm

    New observations push back the epoch of massive-galaxy formation even further by identifying two giant galaxies seen when the universe was only 780 million years old, or about 5 percent its current age. […]

  • Two Super-Earths around red dwarf K2-18
    on December 5, 2017 at 4:59 pm

    New research has revealed that a little-known exoplanet called K2-18b could well be a scaled-up version of Earth. Just as exciting, the same researchers also discovered for the first time that the planet has a neighbor. […]

  • New spin to solving mystery of stellar companions
    on December 5, 2017 at 2:15 pm

    Scientists are investigating the nature of planetary-mass bodies that orbit stars, finding new clues to their origins. […]

  • Neutron stars on the brink of collapse
    on December 4, 2017 at 2:46 pm

    The exact characteristics of Neutron stars, the densest objects in the Universe, are still unknown. Scientists have managed to narrow down the size of neutron stars with the aid of computer simulations. The calculations based on data from the LIGO and Virgo observatories suggest that the neutron star radius must be at least 10.7 km. […]

  • Blowing in the stellar wind: Scientists reduce the chances of life on exoplanets in so-called...
    on November 30, 2017 at 11:00 pm

    A new article describes the detrimental impact of stellar wind on the atmosphere of exoplanets. […]

  • Why is massive star formation quenched in galaxy centers?
    on November 28, 2017 at 5:33 pm

    A new study proposes that one of the reasons that slows down the rate at which massive stars form in galaxies is the existence of relatively large magnetic fields. Research has revealed that this process occurs around the center of the galaxy NGC 1097. […]

  • Infant stars found surprisingly near galaxy's supermassive black hole
    on November 28, 2017 at 5:32 pm

    ALMA has revealed the telltale signs of eleven low-mass stars forming perilously close -- within three light-years -- to the Milky Way's supermassive black hole. […]

  • First proper motions measured of stars in a small galaxy outside the Milky Way
    on November 27, 2017 at 5:47 pm

    By combining data from the Hubble Space Telescope and the Gaia mission, astronomers have been able to measure the proper motion of 15 stars in the Sculptor Galaxy, the first such measurement outside the Milky Way. Analysis shows an unexpected preference in the direction of movement, which suggests that the standard theoretical models used to describe the motion of stars and dark matter halos in other galaxies might be invalid. […]

  • New method to measure neutron star size uses modeling based on thermonuclear explosions
    on November 22, 2017 at 4:30 pm

    Neutron stars are made out of cold ultra-dense matter. How this matter behaves is one of the biggest mysteries in modern nuclear physics. Researchers developed a new method for measuring the radius of neutron stars which helps them to understand what happens to the matter inside the star under extreme pressure. […]

  • Astronomers reveal nearby stars that are among the oldest in our galaxy
    on November 20, 2017 at 7:14 pm

    Astronomers have discovered some of the oldest stars in our Milky Way galaxy by determining their locations and velocities. […]

  • Closest temperate world orbiting quiet star discovered
    on November 15, 2017 at 2:17 pm

    A temperate Earth-sized planet has been discovered only 11 light-years from the solar system by a team using ESO's unique planet-hunting HARPS instrument. The new world has the designation Ross 128 b and is now the second-closest temperate planet to be detected after Proxima b. It is also the closest planet to be discovered orbiting an inactive red dwarf star, which may increase the likelihood that this planet could potentially sustain life. […]

  • Duo of titanic galaxies captured in extreme starbursting merger
    on November 13, 2017 at 5:36 pm

    Astronomers have uncovered the never-before-seen close encounter between two astoundingly bright and spectacularly massive galaxies in the early universe. […]

  • Stellar explosions and cosmic 'recipe' for nearby universe
    on November 13, 2017 at 5:36 pm

    Thanks to an in-depth look into the composition of gas in the Perseus galaxy cluster, Japan's Hitomi mission has given scientists new insights into the stellar explosions that formed its chemical elements. […]

  • Anatomy of a cosmic snake reveals structure of distant galaxies
    on November 13, 2017 at 4:11 pm

    We have a fair understanding of star formation, from the interstellar matter to the diffuse clouds whose gravitational contraction gives birth to stars. But observations of distant galaxies have questioned this picture, the size and mass of these distant stellar nurseries exceeding that of their local counterparts. Astrophysicists have tackled this inconsistency and found the first answers thanks to the observation of the cosmic snake. […]

  • Winds blowing off a dying star
    on November 10, 2017 at 1:43 pm

    Stars like our Sun eject large amounts of gas and dust into space, containing various elements and compounds. Asymptotic giant branch -- AGB -- phase stars, near their end of life, are particularly significant sources of such substances in our galaxy. […]

  • Expanding light echo spotted around supernova
    on November 9, 2017 at 7:10 pm

    Hubble images reveal an expanding shell of light from a supernova explosion sweeping through interstellar space three years after the stellar blast was discovered. The "echoing" light looks like a ripple expanding on a pond. The supernova, called SN 2014J, was discovered on Jan. 21, 2014. […]

  • Astronomers discover a star that would not die
    on November 8, 2017 at 6:18 pm

    Astronomers have made a bizarre discovery; a star that refuses to stop shining. […]

  • Modeling coulomb crystals to understand star evolution
    on November 7, 2017 at 4:24 pm

    Matter in the cores of old white dwarfs and the crusts of neutron stars is compressed to unimaginable densities by intense gravitational forces. The scientific community believes this matter is composed of Coulomb crystals that form at temperatures potentially as high as 100 million Kelvin. […]

  • Red giant star gives a surprising glimpse of the sun's future
    on November 7, 2017 at 2:28 pm

    Astronomers have for the first time observed details on the surface of an aging star with the same mass as the sun. ALMA's images show that the star is a giant, its diameter twice the size of Earth's orbit around the sun, but also that the star's atmosphere is affected by powerful, unexpected shock waves. […]

  • Forest of molecular signals in star forming galaxy
    on November 6, 2017 at 2:00 pm

    Astronomers have found a rich molecular reservoir in the heart of an active star-forming galaxy with the Atacama Large Millimeter/submillimeter Array (ALMA). Among eight clouds identified at the center of the galaxy NGC 253, one exhibits very complex chemical composition, while in the other clouds many signals are missing. This chemical richness and diversity shed light on the nature of the baby boom galaxy. […]

  • Another close-by planetary system?
    on November 3, 2017 at 12:18 pm

    The ALMA Observatory in Chile has detected dust around the closest star to the Solar System, Proxima Centauri. These new observations reveal the glow coming from cold dust in a region between one to four times as far from Proxima Centauri as the Earth is from the Sun. The data also hint at the presence of an even cooler outer dust belt and may indicate the presence of an elaborate planetary system. […]

  • Shedding light on the mystery of matter accretion in young stars
    on November 2, 2017 at 10:03 pm

    Astronomers are shedding light on the mystery of matter accretion in young stars. Their discovery helps explain how matter accumulates on the surface of a young star and reconciles the theory behind and observations on the accretion process -- a matter of debate among astrophysicists because of the limited number of theoretical models and actual observations. […]

  • Atmospheric beacons guide NASA scientists in search for life
    on November 2, 2017 at 4:10 pm

    New NASA research proposes a novel approach to sniffing out exoplanet atmospheres. It takes advantage of frequent stellar storms from cool, young dwarf stars to highlight signs of possible life. […]