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Tuesday 22 March 2011
Japan Earthquake May Have Shifted Earth's Axis
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.
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