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Heliophysics - Sun Topics

  • What Lies Beneath A Hurricane

    2000April 6, 2011

    Two NASA satellites are seeing things beneath the cloud tops of hurricanes that have been hidden from traditional weather satellites. The new data are helping scientists understand and predict dangerous storms.

  • Lighting Up the Ecosphere

    2000April 6, 2011

    Using satellite images of city lights at night, NASA scientists are mapping the spread of urban areas around the globe and monitoring their impact on our planet's ecosystem.

  • The Incredible Shrinking Ozone Hole

    2000April 6, 2011

    After reaching record-breaking proportions earlier this year the ozone hole over Antarctica has made a surprisingly hasty retreat.

  • A Good Month for Asteroids

    2000April 6, 2011

    September has been a good month for astronomers studying Near-Earth Asteroids(NEAs). No fewer than five sizable minor planets have flown past our planet since the beginning of the month, affording astronomers a close-up look at these ever-scary space rocks.

  • NASA goes on SAFARI

    2000Sept. 20, 2011

    Southern Africa offers a unique climate sub-system where scientists can study the effects of industrial activity, biomass burning and changing patterns of land usage on the environment. Last weekend a international team of scientists launched an intensive campaign -- part of the SAFARI 2000 project -- to study this complex region from the ground, the air and from space.

  • Retreat of the West Antarctic Ice Sheet

    2000April 6, 2011

    Scientists say that the West Antarctic Ice Sheet is retreating more slowly than they thought. In fact, it may have been growing just 8,000 years ago -- long after the end of the most recent Ice Age.

  • Four Wheeling on the Moon

    2000April 6, 2011

    The first interplanetary Sports Utility Vehicle makes a comeback at the 7th annual Great Moon Buggy Race in April 2000. Read this article to learn more about the history of the Lunar Rover and how kids today are solving some of the same engineering challenges

  • Earth's Fidgeting Climate

    2000April 6, 2011

    Is human activity warming the Earth or do recent signs of climate change signal natural variations? In this feature article, scientists discuss the vexing ambiguities of our planet's complex and unwieldy climate.

  • Hurricane Isabel: The View from Space

    2003April 6, 2011

    High above Earth, NASA satellites have taken some remarkable pictures of Hurricane Isabel's landfall.

  • 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.