chile earthquake earth axis

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Chile Quake Shifted Earth's Axis, Shortened Day

Moving masses of rock by several meters affects rotation

(Newser) - The magnitude 8.8 earthquake that hit Chile may have actually shifted the Earth's axis, shortening the length of a day, a NASA scientist says. Moving hundreds of kilometers of rock changes the earth's distribution of mass, and, in turn, changes the planet's rate of rotation. In this case, the...

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