• NASA's Solar Dynamics Observatory images the sun in 10 different ultraviolet light wavelengths every 12 seconds. Image courtesy of NASA
    November 3, 2015   BY  

    NASA is allowing you to engage in an extended gazing session at our planet’s star this week with the release of a new video that reveals the sun — rotation, solar flares and all — in unprecedented detail. The 30-minute look at the celestial body, NASA describes, “presents the nuclear fire of our life-giving star in intimate detail, offering new perspective into our own relationships with grand forces of the solar system.” Continue reading

  • Astronomers have determined that they can read a star's age by how quickly it is spinning. Photo by NASA Goddard Space Flight Center
    January 7, 2015   BY  

    It turns out, like us, stars slow down in their old age.

    That observation is the key to a new method astronomers are using to accurately tell the age of cool stars — stars that match the size of, or are smaller than, our own sun. In a study published Monday in the journal Nature, a U.S. team claims it can estimate the age of these stars to within 10 percent by measuring how fast the star is spinning. Continue reading

  • The band of turquoise across the moon, caught during a total lunar eclipse on December 21, 2010, is from sunlight filtered through the ozone layer. Image by Alan Dyer and
    October 7, 2014   BY  

    For 59 minutes early Wednesday morning, the moon will turn an eerie shade of copper red when it passes through the Earth’s shadow in a total lunar eclipse. And if the skies are clear enough and you look at just … Continue reading

  • There's just as great a chance of a solar flare hitting Earth as there is an earthquake rocking California. Photo by Flickr user Dave's Domain.
    August 7, 2014   BY  

    Beyond Earth’s atmosphere lurks a threat that could knock out our electrical grid and cause catastrophic structural, not to mention economic, damage. The risk within the next decade is about as great as that of another earthquake shaking California. So why haven’t we prepared? Continue reading

  • A mid-level flare, an M6.5, erupted from the sun on April 2, 2014, peaking at 10:05 a.m. EDT. This image from NASA's Solar Dynamics Observatory shows the flare in a blend of two wavelengths of extreme ultraviolet light: 131 Angstroms and 171 Angstroms, colorized in yellow and red, respectively.
    April 6, 2014   BY  

    NASA’s Solar Dynamics Observatory has released dramatic video of a “mid-level” solar flare from April 2. [youtube:] Flares are short, powerful bursts of radiation emitted from the sun’s surface. NASA says the radiation cannot penetrate the Earth’s atmosphere, but on rare … Continue reading

  • November 5, 2013  

    New data from the Kepler Spacecraft shows one in five of the sun-like stars in the universe have Earth-size planets. The potential for habitable planets has fueled excitement in the search for intelligent life. Jeffrey Brown speaks to one of the lead researchers, Geoff Marcy of the University of California, Berkeley. Continue reading

  • July 12, 2012   BY  

    From a gigantic rainbow serpent fashioned out of recycled jerry cans to a painting of girls dancing against a Milky Way backdrop, the Smithsonian’s “African Cosmos: Stellar Arts” exhibit examines how African artists through time have looked to the sky, the sun, the moon and the stars for inspiration. Continue reading

  • June 6, 2012   BY  

    For those Earthlings lucky enough to be under cloudless skies during Tuesday’s Venus transit, it took the form of a pea-sized dot gliding across the Sun’s northern hemisphere. For more perspective, NASA has collected a stunning sampling of images both from space telescopes and International Space Station astronauts. Continue reading

  • July 28, 2011  

    A team of Canadian scientists have discovered a “Trojan” asteroid that is caught in a synchronized orbit with the Earth. Jeffrey Brown discusses what this discovery means with the California Institute of Technology’s Mike Brown. Continue reading

  • April 4, 2011    

    As the sun enters its stormy season, and as GPS systems and electricity networks become increasingly vulnerable to solar eruptions, NASA scientists are working to better understand the mysteries of space weather. Continue reading

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