Sun

Sun News -- ScienceDaily News about the Sun. Science articles on Sunspots and the Sun's Corona; evidence the Sun has a companion star; images from the far side of the Sun and more.

  • Milky Way's supermassive black hole may have 'unseen' siblings
    on April 24, 2018 at 5:36 pm

    Astronomers predict that galaxies with a mass similar to the Milky Way should host several supermassive black holes. […]

  • Meteorite diamonds tell of a lost planet
    on April 18, 2018 at 6:48 pm

    Scientists have examined a slice from a meteorite that contains large diamonds formed at high pressure. The study shows that the parent body from which the meteorite came was a planetary embryo of a size between Mercury and Mars. […]

  • Understanding Mercury's magnetic tail
    on April 17, 2018 at 3:57 pm

    Theoretical physicists used simulations to explain the unusual readings collected in 2009 by the Mercury Surface, Space Environment, Geochemistry, and Ranging mission. The origin of energetic electrons detected in Mercury's magnetic tail has puzzled scientists. This new study provides a possible solution to how these energetic electrons form. […]

  • Once upon a time, an exoplanet was discovered
    on April 16, 2018 at 4:16 pm

    In recent history, a very important achievement was the discovery, in 1995, of 51 Pegasi b, the first extrasolar planet ever found around a normal star other than the Sun. […]

  • Outback radio telescope listens in on interstellar visitor
    on April 10, 2018 at 2:09 pm

    A telescope in outback Australia has been used to listen to a mysterious cigar-shaped object that entered our Solar System late last year. When 'Oumuamua was first discovered, astronomers thought it was a comet or an asteroid from within the Solar System. But after studying its orbit and discovering its long, cylindrical shape, they realised 'Oumuamua was neither and had come from interstellar space. […]

  • Giant solar tornadoes put researchers in a spin
    on April 6, 2018 at 2:34 am

    Despite their appearance solar tornadoes are not rotating after all, according to a team of scientists. A new analysis of these gigantic structures, each one several times the size of the Earth, indicates that they may have been misnamed because scientists have so far only been able to observe them using 2-dimensional images. […]

  • Magnetic hot spots on neutron stars survive for millions of years
    on April 4, 2018 at 1:39 pm

    A study of the evolution of magnetic fields inside neutron stars shows that instabilities can create intense magnetic hot spots that survive for millions of years, even after the star's overall magnetic field has decayed significantly. […]

  • X-rays could sterilize alien planets in (otherwise) habitable zones
    on April 2, 2018 at 11:28 pm

    Intense radiation could strip away the ozone layer of Earth-like planets around other stars and render them uninhabitable, according to a new study. […]

  • Astronomers find 72 bright and fast explosions
    on April 2, 2018 at 11:26 pm

    Gone in a (cosmological) flash: a team of astronomers found 72 very bright, but quick events in a recent survey and are still struggling to explain their origin. […]

  • Newly-discovered planet is hot, metallic and dense as Mercury
    on March 27, 2018 at 5:20 pm

    A hot, metallic, Earth-sized planet with a density similar to Mercury -- situated 339 light years away -- has been detected and characterized by a global team of astronomers. […]

  • What interstellar visitor 'Oumuamua can teach us
    on March 27, 2018 at 2:28 pm

    The first interstellar object ever seen in our solar system, named 'Oumuamua, is giving scientists a fresh perspective on how planets, asteroids and comets form. […]

  • A star disturbed the comets of the solar system 70,000 years ago
    on March 20, 2018 at 4:34 pm

    About 70,000 years ago, a small reddish star approached our solar system and gravitationally disturbed comets and asteroids. Astronomers have verified that the movement of some of these objects is still marked by that stellar encounter. […]

  • Interstellar asteroid, 'Oumuamua, likely came from a binary star system
    on March 19, 2018 at 4:01 pm

    New research finds that 'Oumuamua, the rocky object identified as the first confirmed interstellar asteroid, very likely came from a binary star system. […]

  • Scientists detect radio echoes of a black hole feeding on a star
    on March 19, 2018 at 3:58 pm

    A scientist has detected radio echoes of a black hole feeding on a star, suggesting black hole emits a jet of energy proportional to the stellar material it gobbles up. […]

  • Space radiation more hazardous: Implication sfor astronauts and satellites
    on March 15, 2018 at 3:06 pm

    It might sound like something from a science fiction plot - astronauts traveling into deep space being bombarded by cosmic rays - but radiation exposure is science fact. As future missions look to travel back to the moon or even to Mars, new research cautions that the exposure to radiation is much higher than previously thought and could have serious implications on both astronauts and satellite technology. […]

  • Three NASA satellites recreate solar eruption in 3-D
    on March 9, 2018 at 10:07 pm

    Scientists have developed a model that simulates how shocks following coronal mass ejections, or CMEs, propagate from the sun -- an effort made possible only by combining data from three different NASA satellites. […]

  • First laboratory simulation of exoplanet atmospheric chemistry
    on March 8, 2018 at 3:51 pm

    Scientists have conducted the first lab experiments on haze formation in simulated exoplanet atmospheres, an important step for understanding upcoming observations of planets outside the solar system with the James Webb Space Telescope. […]

  • 70-year-old mystery of how magnetic waves heat the Sun cracked
    on March 6, 2018 at 2:33 pm

    Scientists have discovered that magnetic waves crashing through the Sun may be key to heating its atmosphere and propelling the solar wind. […]

  • Comet 'Chury's' late birth
    on March 5, 2018 at 7:25 pm

    Comets which consist of two parts, like Chury, can form after a catastrophic collision of larger bodies. Such collisions may have taken place in a later phase of our solar system, which suggests that Chury can be much younger than previously assumed. […]

  • Massive astrophysical objects governed by subatomic equation
    on March 5, 2018 at 4:15 pm

    Surprisingly, a quintessential equation of quantum mechanics emerges while studying astronomical disks of orbiting material. […]

  • Hubble observes exoplanet atmosphere in more detail than ever before
    on March 1, 2018 at 7:41 pm

    An international team of scientists has used the NASA/ESA Hubble Space Telescope to study the atmosphere of the hot exoplanet WASP-39b. By combining this new data with older data they created the most complete study yet of an exoplanet atmosphere. The atmospheric composition of WASP-39b hints that the formation processes of exoplanets can be very different from those of our own Solar System giants. […]

  • Search for first stars uncovers 'dark matter'
    on February 28, 2018 at 7:44 pm

    New research offers the first direct proof that dark matter exists and that it is composed of low-mass particles. […]

  • Proxima Centauri's no good, very bad day
    on February 26, 2018 at 3:33 pm

    Astronomers have detected a massive stellar flare -- an energetic explosion of radiation -- from the closest star to our own Sun, Proxima Centauri, which occurred last March. This finding raises questions about the habitability of our Solar System's nearest exoplanetary neighbor, Proxima b, which orbits Proxima Centauri. […]

  • NASA's SDO Reveals How Magnetic Cage on the Sun Stopped Solar Eruption
    on February 23, 2018 at 6:19 pm

    A dramatic magnetic power struggle at the Sun's surface lies at the heart of solar eruptions, new research shows. […]

  • NASA's James Webb Space Telescope to reveal secrets of the Red Planet
    on February 20, 2018 at 5:47 pm

    Mars rovers and orbiters have found signs that Mars once hosted liquid water on its surface. Much of that water escaped over time. How much water was lost, and how does the water that’s left move from ice to atmosphere to soil? During its first year of operations, NASA’s James Webb Space Telescope will seek answers. Webb also will study mysterious methane plumes that hint at possible geological or even biological activity. […]

  • Hubble sees Neptune's mysterious shrinking storm
    on February 15, 2018 at 6:11 pm

    Three billion miles away on the farthest known major planet in our solar system, an ominous, dark storm -- once big enough to stretch across the Atlantic Ocean from Boston to Portugal -- is shrinking out of existence as seen in pictures of Neptune taken by NASA's Hubble Space Telescope. […]

  • Recreating outer space in the lab
    on February 14, 2018 at 2:38 pm

    Thermodynamics provides insight into the internal energy of a system and the energy interaction with its surroundings. This relies on the local thermal equilibrium of a system. […]

  • Towards a better prediction of solar eruptions
    on February 7, 2018 at 7:03 pm

    Just one phenomenon may underlie all solar eruptions. Researchers have identified the presence of a confining 'cage' in which a magnetic rope forms, causing solar eruptions. It is the resistance of this cage to the attack of the rope that determines the power and type of the upcoming flare. This work has enabled the scientists to develop a model capable of predicting the maximum energy that can be released during a solar flare. […]

  • Reduced energy from the sun might occur by mid-century: Now scientists know by how much
    on February 6, 2018 at 3:58 pm

    The Sun might emit less radiation by mid-century, giving planet Earth a chance to warm a bit more slowly but not halt the trend of human-induced climate change. […]

  • HINODE captures record-breaking solar magnetic field
    on February 6, 2018 at 3:03 pm

    Astronomers in Japan have observed the strongest magnetic field ever directly measured on the surface of the Sun. They determined that it was generated as a result of gas outflow from one sunspot pushing against another sunspot. […]