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.

  • Eclipse research: Following in the moon's slipstream to capture high-res sunspot images
    on August 18, 2017 at 8:24 pm

    While much of the research around the eclipse on Monday will focus on the effects of the Sun's brief, daytime disappearance on Earth and its atmosphere, a group of solar physicists will be leveraging the rare event to capture a better glimpse of the star itself. […]

  • Spoiler alert: Computer simulations provide preview of upcoming eclipse
    on August 18, 2017 at 1:21 pm

    Scientists have forecast the corona of the sun during the upcoming eclipse. The findings shed light on what the eclipse of the sun might look like Aug. 21 when it will be visible across much of the US, tracing a 70-mile-wide band across 14 states. […]

  • NASA Protects its super heroes from space weather
    on August 17, 2017 at 1:27 pm

    When astronauts travel in space they can't see or even feel radiation. However, NASA's Human Research Program (HRP) is studying the effects radiation plays on the human body and developing ways to monitor and protect against this silent hazard. […]

  • NASA, ESA spacecraft track solar storm through space
    on August 16, 2017 at 2:03 pm

    Using seven spacecraft, along with computer models, scientists have pieced together the journey of a coronal mass ejection from the Sun outward to Mars, Comet 67P, Jupiter and even the New Horizons spacecraft now beyond Pluto. […]

  • Tracking a solar eruption through the solar system
    on August 15, 2017 at 4:04 pm

    Ten spacecraft, from ESA's Venus Express to NASA's Voyager-2, felt the effect of a solar eruption as it washed through the solar system while three other satellites watched, providing a unique perspective on this space weather event. […]

  • Studying the Sun's atmosphere with the total solar eclipse of 2017
    on August 14, 2017 at 4:53 pm

    A total solar eclipse happens somewhere on Earth about once every 18 months. But because Earth's surface is mostly ocean, most eclipses are visible over land for only a short time, if at all. The total solar eclipse of Aug. 21, 2017, is different -- its path stretches over land for nearly 90 minutes, giving scientists an unprecedented opportunity to make scientific measurements from the ground. […]

  • NASA watches the Sun put a stop to its own eruption
    on August 11, 2017 at 4:48 pm

    On Sept. 30, 2014, multiple NASA observatories watched a failed solar eruption. Because scientists had so many eyes on the event, they were able to explain how the Sun's magnetic landscape shredded its own eruption. […]

  • Scientists probe Neptune's depths to reveal secrets of icy planets
    on August 11, 2017 at 1:37 pm

    Scientists have helped solve the mystery of what lies beneath the surface of Neptune -- the most distant planet in our solar system. […]

  • Day to night and back again: Earth's ionosphere during the total solar eclipse
    on August 10, 2017 at 6:57 pm

    Three NASA-funded studies will use the Aug. 21 total solar eclipse as a ready-made experiment, courtesy of nature, to improve our understanding of the ionosphere and its relationship to the Sun. […]

  • New observations of Crab Nebula and Pulsar reveal polarized emissions
    on August 10, 2017 at 12:21 pm

    New observations of polarised X-rays from the Crab Nebula and Pulsar may help explain sudden flares in the Crab’s X-ray intensity, as well as provide new data for modeling – and understanding – the nebula. […]

  • Chaotic magnetic field lines may answer the coronal heating problem
    on August 9, 2017 at 6:03 pm

    It is known that the sun's corona is roughly 100 times hotter than its photosphere -- the sun's visible layer. The reason for this mysterious heating of the solar coronal plasma, however, is not yet entirely understood. A research team in India has developed a set of numerical computations to shed light on this phenomenon, and present this week in Physics of Plasmas, analysis examining the role of chaotic magnetic fields in potential heating mechanisms. […]

  • Chaco Canyon petroglyph may represent ancient total eclipse
    on August 9, 2017 at 6:01 pm

    As the hullabaloo surrounding the Aug. 21 total eclipse of the sun swells by the day, an expert says a petroglyph in New Mexico's Chaco Canyon may represent a total eclipse that occurred there a thousand years ago. […]

  • Black holes pervade the universe, celestial census indicates
    on August 7, 2017 at 7:54 pm

    After conducting a cosmic inventory of sorts to calculate and categorize stellar-remnant black holes, astronomers have concluded that there are probably tens of millions of the enigmatic, dark objects in the Milky Way -- far more than expected. […]

  • Primordial asteroids discovered
    on August 3, 2017 at 6:10 pm

    Astronomers recently discovered a relatively unpopulated region of the main asteroid belt, where the few asteroids present are likely pristine relics from early in solar system history. The team used a new search technique that also identified the oldest known asteroid family, which extends throughout the inner region of the main asteroid belt. […]

  • Our solar system's 'shocking' origin story
    on August 3, 2017 at 2:31 pm

    According to one longstanding theory, our Solar System's formation was triggered by a shock wave from an exploding supernova. It injected material from the exploding star into a neighboring cloud of dust and gas, causing it to collapse in on itself and form the Sun and its surrounding planets. New work offers fresh evidence supporting this theory, modeling the Solar System's formation beyond the initial cloud collapse and into the intermediate stages of star formation. […]

  • Solving the mystery of the sun's hot atmosphere
    on August 3, 2017 at 1:19 pm

    The elemental composition of the Sun's hot atmosphere known as the 'corona' is strongly linked to the 11-year solar magnetic activity cycle, a team of scientists has revealed for the first time. […]

  • Exoplanet shines with glowing water atmosphere
    on August 2, 2017 at 5:47 pm

    Scientists have found compelling evidence for a stratosphere on an enormous planet outside our solar system. The planet's stratosphere -- a layer of atmosphere where temperature increases with higher altitudes -- is hot enough to boil iron. […]

  • Sun's core rotates four times faster than its surface
    on August 1, 2017 at 1:43 pm

    The sun's core rotates nearly four times faster than the sun's surface, an international team of astronomers reports. The most likely explanation is that this core rotation is left over from the period when the sun formed, some 4.6 billion years ago. […]

  • Earth-like atmosphere may not survive Proxima b's orbit
    on July 31, 2017 at 8:41 pm

    An Earth-like planet outside the solar system may not be able to keep a grip on its atmosphere, leaving the surface exposed to harmful stellar radiation and reducing its potential for habitability. […]

  • Complex chemistry in Saturn's moon Titan's atmosphere
    on July 28, 2017 at 6:15 pm

    Saturn's frigid moon Titan has a curious atmosphere. In addition to a hazy mixture of nitrogen and hydrocarbons, like methane and ethane, Titan's atmosphere also contains an array of more complex organic molecules, including vinyl cyanide, which astronomers recently uncovered in archival ALMA data. Under the right conditions, like those found on the surface of Titan, vinyl cyanide may naturally coalesce into microscopic spheres resembling cell membranes. […]

  • Solar eclipse science along the path of totality
    on July 27, 2017 at 3:56 pm

    A number of research projects will take place across the country during the upcoming Aug. 21 solar eclipse. The research will advance our knowledge of the sun's complex and mysterious magnetic field and its effects on Earth's atmosphere and land. […]

  • Large, distant comets more common than previously thought
    on July 25, 2017 at 8:10 pm

    There are about seven times more long-period comets measuring at least 1 kilometer across than previously predicted, suggests new research. The researchers also found that long-period comets are, on average, nearly twice as large as 'Jupiter family' comets, whose orbits are shaped by Jupiter's gravity and have periods of less than 20 years. […]

  • Chasing the Total Solar Eclipse from NASA's WB-57F jets
    on July 25, 2017 at 4:20 pm

    A team of scientists will take to the skies during the Aug. 21 eclipse, using two of NASA's WB-57 jet planes to chase the shadow of the moon for unparalleled observations of the sun and Mercury. […]

  • Safely viewing a solar eclipse
    on July 24, 2017 at 7:05 pm

    A solar eclipse will be visible across North America for 2 to 3 hours on Monday, August 21, 2017. Watching the moon slowly block out the sun is a rare opportunity but should be attempted with caution. […]

  • The moon is front and center during a total solar eclipse
    on July 21, 2017 at 2:31 pm

    In the lead-up to a total solar eclipse, most of the attention is on the sun, but Earth's moon also has a starring role. […]

  • NASA looks to solar eclipse to help understand Earth's energy system
    on July 20, 2017 at 7:53 pm

    It was midafternoon, but it was dark in an area in Boulder, Colorado on Aug. 3, 1998. A thick cloud appeared overhead and dimmed the land below for more than 30 minutes. Well-calibrated radiometers showed that there were very low levels of light reaching the ground, sufficiently low that researchers decided to simulate this interesting event with computer models. Now in 2017, inspired by the event in Boulder, NASA scientists will explore the moon's eclipse of the sun to learn more about Earth's energy system. […]

  • Viewing Martian moon orbiting the red planet
    on July 20, 2017 at 5:19 pm

    While photographing Mars, NASA's Hubble Space Telescope captured a cameo appearance of the tiny moon Phobos on its trek around the Red Planet. Hubble took 13 separate exposures over 22 minutes to create a time-lapse video showing the moon's orbital path. […]

  • Space sound waves around Earth: Electrons whistle while they work?
    on July 17, 2017 at 3:04 pm

    NASA's Van Allen Probes have observed a new population of space sound waves, called plasmaspheric hiss, which are important in removing high-energy particles from around Earth that can damage satellites. […]

  • Yes, the sun is an ordinary, solar-type star after all
    on July 13, 2017 at 7:50 pm

    The Sun is a solar-type star, a new study claims -- resolving an ongoing controversy about whether the star at the center of our Solar System exhibits the same cyclic behavior as other nearby, solar-type stars. […]

  • Planet Nine hypothesis supported by new evidence
    on July 12, 2017 at 3:04 pm

    Last year, the existence of an unknown planet in our Solar system was announced. However, this hypothesis was subsequently called into question as biases in the observational data were detected. Now astronomers have used a novel technique to analyze the orbits of the so-called extreme trans-Neptunian objects and, once again, they point out that there is something perturbing them: a planet located at a distance between 300 to 400 times the Earth-Sun separation. […]