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.

  • New solar sailing technology for NASA
    on July 19, 2018 at 8:50 pm

    Researchers is taking solar sailing to the next level with advanced photonic materials. This new class of materials could be used to steer reflected or transmitted photons and enable near-Earth, interplanetary and interstellar space travel. […]

  • Traveling to the sun: Why won't Parker Solar Probe melt?
    on July 19, 2018 at 8:50 pm

    This summer, NASA's Parker Solar Probe will launch to travel closer to the Sun, deeper into the solar atmosphere, than any mission before it. Cutting-edge technology and engineering will help it beat the heat. […]

  • NASA's new mini satellite will study Milky Way's halo
    on July 18, 2018 at 9:03 pm

    A new mission called HaloSat will help scientists search for the universe's missing matter by studying X-rays from hot gas surrounding the Milky Way galaxy. […]

  • Solar corona is more structured, dynamic than previously thought
    on July 18, 2018 at 4:48 pm

    Scientists have discovered never-before-detected, fine-grained structures in the Sun's outer atmosphere, or corona. The team imaged this critical region in detail using sophisticated software techniques and longer exposures from the COR-2 camera on board NASA's Solar and Terrestrial Relations Observatory-A (STEREO-A). […]

  • X-ray data may be first evidence of a star devouring a planet
    on July 18, 2018 at 3:33 pm

    An analysis of X-ray data suggests the first observations of a star swallowing a planet, and may also explain the star's mysterious dimming. […]

  • A dozen new moons of Jupiter discovered, including one 'oddball'
    on July 17, 2018 at 2:12 pm

    Twelve new moons orbiting Jupiter have been found -- 11 'normal' outer moons, and one that they're calling an 'oddball.' Astronomers first spotted the moons in the spring of 2017 while they were looking for very distant solar system objects as part of the hunt for a possible massive planet far beyond Pluto. […]

  • How does the sun's rotational cycle influence lightning activity on earth?
    on July 17, 2018 at 1:47 pm

    A collaborative research team has taken the first steps to understanding how the sun's rotational cycle influences lightning activity. They found answers in an unusual source -- diaries dating back to the 1700s. […]

  • Rocky planet neighbor looks familiar, but is not Earth's twin
    on July 10, 2018 at 4:28 pm

    Last autumn, the world was excited by the discovery of an exoplanet called Ross 128 b, which is just 11 light years away from Earth. New work has for the first time determined detailed chemical abundances of the planet's host star, Ross 128. […]

  • Superstar Eta Carinae shoots cosmic rays
    on July 3, 2018 at 3:28 pm

    NASA's NuSTAR space telescope shows that Eta Carinae, the most luminous and massive stellar system within 10,000 light-years, is accelerating cosmic rays. […]

  • Molecular oxygen in comet's atmosphere not created on its surface
    on July 3, 2018 at 2:54 pm

    Scientists have found that molecular oxygen around comet 67P is not produced on its surface, as some suggested, but may be from its body. […]

  • New mystery discovered regarding active asteroid phaethon
    on June 29, 2018 at 2:25 pm

    Based on a new study of how near-Earth asteroid Phaethon reflects light at different angles, astronomers think that its surface may reflect less light than previously thought. This is an exciting mystery for the recently approved DESTINY+ mission to investigate when it flies past Phaethon. […]

  • `Oumuamua gets a boost
    on June 27, 2018 at 8:02 pm

    `Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. This anomalous behavior was detected by a worldwide astronomical collaboration. The new results suggest that `Oumuamua is most likely an interstellar comet and not an asteroid. […]

  • NASA's James Webb Space Telescope to target Jupiter's Great Red Spot
    on June 25, 2018 at 11:26 pm

    NASA's James Webb Space Telescope, the most ambitious and complex space observatory ever built, will use its unparalleled infrared capabilities to study Jupiter's Great Red Spot, shedding new light on the enigmatic storm and building upon data returned from NASA's Hubble Space Telescope and other observatories. […]

  • Martian dust storm grows global: Curiosity captures photos of thickening haze
    on June 20, 2018 at 9:09 pm

    A storm of tiny dust particles has engulfed much of Mars over the last two weeks and prompted NASA's Opportunity rover to suspend science operations. But across the planet, NASA's Curiosity rover, which has been studying Martian soil at Gale Crater, is expected to remain largely unaffected by the dust. The Martian dust storm has grown in size and is now officially a 'planet-encircling' (or 'global') dust event. […]

  • Distant moons may harbor life
    on June 15, 2018 at 1:36 am

    Researchers have identified more than 100 giant planets that potentially host moons capable of supporting life. Their work will guide the design of future telescopes that can detect these potential moons and look for tell-tale signs of life, called biosignatures, in their atmospheres. […]

  • Long suspected theory about the moon holds water
    on June 14, 2018 at 1:50 pm

    Scientists have discovered a mineral known as moganite in a lunar meteorite found in a hot desert in northwest Africa. […]

  • The true power of the solar wind
    on June 12, 2018 at 2:57 pm

    The planets and moons of our solar system are continuously being bombarded by particles from the sun. On the Moon or on Mercury, the uppermost layer of rock is gradually eroded by the impact of sun particles. New results show that previous models of this process are incomplete. The effects of solar wind bombardment are much more drastic than previously thought. […]

  • Experiments trace interstellar dust back to solar system's formation
    on June 11, 2018 at 9:24 pm

    Experiments have helped to confirm that samples of interplanetary particles -- collected from Earth's upper atmosphere and believed to originate from comets -- contain dust leftover from the initial formation of the solar system. […]

  • One of the most massive neutron stars ever discovered
    on June 7, 2018 at 3:27 pm

    Using a pioneering method, researchers have found a neutron star of about 2.3 Solar masses -- one of the most massive ever detected. […]

  • How solar prominences vibrate
    on June 7, 2018 at 3:27 pm

    Researchers have cataloged around 200 oscillations of the solar prominences during the first half of 2014. Its development has been possible thanks to the GONG network of telescopes, of which one of them is located in the Teide Observatory. […]

  • How do you weigh a galaxy? Especially the one you're in?
    on June 6, 2018 at 9:38 pm

    Pinning down the mass of a galaxy may seem like an esoteric undertaking, but scientists think it holds the key to unraveling the nature of the elusive, yet-to-be-seen dark matter, and the fabric of our cosmos. A new technique promises more reliable estimates of the masses of galaxies. […]

  • As solar wind blows, our heliosphere balloons
    on June 6, 2018 at 4:04 pm

    What happens when the solar wind suddenly starts to blow significantly harder? According to two recent studies, the boundaries of our entire solar system balloon outward -- and an analysis of particles rebounding off of its edges will reveal its new shape. […]

  • Thank the moon for Earth's lengthening day
    on June 4, 2018 at 7:12 pm

    A new study that reconstructs the deep history of our planet's relationship to the moon shows that 1.4 billion years ago, a day on Earth lasted just over 18 hours. This is at least in part because the moon was closer and changed the way the Earth spun around its axis. […]

  • Collective gravity, not Planet Nine, may explain the orbits of 'detached objects'
    on June 4, 2018 at 5:17 pm

    Bumper car-like interactions at the edges of our solar system -- and not a mysterious ninth planet -- may explain the dynamics of strange bodies called 'detached objects,' according to a new study. […]

  • Atomic clock comparison confirms key assumptions of 'Einstein's elevator'
    on June 4, 2018 at 3:26 pm

    By comparing different types of remote atomic clocks, physicists have performed the most accurate test ever of a key principle underlying Albert Einstein's famous theory of general relativity, which describes how gravity relates to space and time. […]

  • Secrets behind Pluto's dunes revealed
    on May 31, 2018 at 6:27 pm

    Scientists have discovered dunes on Pluto, and say they are likely to have been formed of methane ice grains released into its rarefied atmosphere. […]

  • The case of the relativistic particles solved with NASA missions
    on May 29, 2018 at 6:09 pm

    Encircling Earth are two enormous rings -- called the Van Allen radiation belts -- of highly energized ions and electrons. Various processes can accelerate these particles to relativistic speeds, which endanger spacecraft unlucky enough to enter these giant bands of damaging radiation. Scientists had previously identified certain factors that might cause particles in the belts to become highly energized, but they had not known which cause dominates. […]

  • Scientists introduce cosmochemical model for Pluto formation
    on May 25, 2018 at 1:54 pm

    Scientists integrated NASA's New Horizons discoveries with data from ESA's Rosetta mission to develop a new theory about how Pluto may have formed at the edge of our solar system. […]

  • EOVSA reveals new insights into solar flares' explosive energy releases
    on May 24, 2018 at 9:45 pm

    Last September, a massive new region of magnetic field erupted on the Sun's surface next to an existing sunspot. The powerful collision of magnetic fields produced a series of potent solar flares, causing turbulent space weather conditions at Earth. These flares were captured in their moment-by-moment progression. […]

  • First interstellar immigrant discovered in the solar system
    on May 21, 2018 at 1:27 pm

    A new study has discovered the first known permanent immigrant to our solar system. The asteroid, currently nestling in Jupiter's orbit, is the first known asteroid to have been captured from another star system. […]