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Heliophysics - Sun Topics

  • A Quirky El Nino

    2003April 6, 2011

    The ongoing El Nino climate disturbance has a unusual personality. It's weak where it should be strong, warm where it should be cold. And now it seems about to end earlier than expected.

  • Anticipating Earthquakes

    2003Sept. 20, 2011

    High above Earth where seismic waves never reach, satellites may be able to detect earthquakes--before they strike.

  • Mesoamerica Burning

    2003April 6, 2011

    With help from NASA scientists and satellites, Central American governments are piecing together a "bio-corridor" of protected lands stretching from Mexico to South America. They hope the gigantic preserve will help their people and the environment flourish together.

  • Earth's Inconstant Magnetic Field

    2003April 6, 2011

    Our planet's magnetic field is in a constant state of change, say researchers who are beginning to understand how it behaves and why.

  • What Neil & Buzz Left on the Moon

    2004April 6, 2011

    A cutting-edge Apollo 11 science experiment left behind in the Sea of Tranquility is still running today.

  • Why so Dry?

    2004April 6, 2011

    The western United States is facing another long, dry summer. But why? What causes droughts? Are they predictable? NASA scientists are using data from space to unravel the mystery.

  • Cold Peril: The Continuing Adventures of Ulysses

    2004April 6, 2011

    The NASA/ESA Ulysses spacecraft is perilously cold as it begins a newly extended mission to study the sun.

  • The Rise and Fall of the Mayan Empire

    2004April 6, 2011

    NASA scientists are using space satellites to unravel one of the great mysteries of the ancient world. The long-lost secrets they're discovering could help modern people in Central America avoid the fate of the Maya.

  • Outbreak Alerts from Space

    2004April 6, 2011

    With the help of Earth-watching satellites, scientists can identify high-risk hot spots for deadly diseases before outbreaks strike.

  • Total Lunar Eclipse

    2004April 6, 2011

    On Wednesday night, Oct. 27th, North Americans can see a total eclipse of the moon.