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Mar. 18, 2011
Japan Earthquake May Have Changed Earth's Axis
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| Richard Gross, of NASA's Jet Propulsion Laboratory, calculates that last week's earthquake off Japan's coast may have shortened the length of Earth's days by about 1.26 microseconds and shifted its axis by about 6.5 inches. Gross describes the findings and explains how changes in Earth's land masses affect the way it spins. |
Produced by Annette Heist, Senior Producer
Guests
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Richard Gross
Research Scientist, Geodynamics and Space Geodesy Group
NASA's Jet Propulsion Laboratory
Pasadena, California
FEATURED READING
Brilliant Blunders
by Mario Livio
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