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  • Sun's Got the Beat

    April 3, 2000

    Like blood pulsing in an artery, newly discovered currents of gas beat deep inside the Sun, speeding and slackening every 16 months. The solar "heartbeat" throbs in the same region of the Sun suspected of driving the 11-year cycle of solar eruptions. Scientists are hopeful that this pulse can help them unravel the origin and operation of the solar cycle.

  • Yukon Meteor Blast

    Jan. 25, 2000

    A thunderous meteor streaked over the Yukon last week. Now a NASA airplane has flown through the debris cloud in search of extraterrestrial particles.

  • Coming Soon: Better Space Storm Warnings

    June 22, 2000

    In the past, predicting the onset of a geomagnetic storm was difficult. Forecasters couldn't say with much precision how long it would take for a solar coronal mass ejection to reach Earth. Now scientists have created a model that reliably forecasts the arrival of these billion-ton gas clouds in the vicinity of our planet.

  • A Mid-summer's Microbe Hunt

    May 3, 2000

    - A team of explorers including astrobiologist Richard Hoover and AstronautsJim Lovell and Owen Garriott traveled to Antarctica in January 2000 to search for meteorites and extreme-loving microbes.

  • Geodetic Precession

    May 24, 2000

  • High Energy Astrophysicsfor Everybody

    April 12, 2000

    A group of volunteer scientists is converging on Huntsville for an out-of-this-world meeting -- the High Energy AstrophysicsWorkshop for Amateur Astronomers.

  • Polar Substorm

    March 2, 2000

    Last week, an interplanetary wind storm hit our planet with a gale of energetic particles from the Sun. During the storm, a strong gust of solar wind triggered aurora captured by the Ultraviolet Imager on NASA's Polar satellite.

  • Galileo Looks for Auroras on Ganymede

    Dec. 28, 2000

    NASA's durable Galileo spacecraft flew above the solar system's largest moon this morning in search of extraterrestrial Northern Lights.

  • A Little Physicsand A Lot of String

    June 9, 2000

    One day space tethers may be used for boosting orbits, powering satellites, and even sending payloads to The Moonor Mars -- all without the expense of conventional propellants. Scientists discussed this innovative technology at the recent Advanced Space Propulsion Workshop held in Pasadena, CA.

  • Asteroids have Seasons, Too

    June 1, 2000