Earth’s Core Spins Faster Than Surface, Study Confirms

Publication: National Geographic News   Date: August 25, 2005   View Article

Analysis of nearly identical earthquakes that happened years apart proves that Earth’s moon-size inner core rotates faster than the rest of the planet, a team of geophysicists report today.

The finding is “unambiguous” and should settle a nearly decadelong debate over the matter, said Xiaodong Song, a geophysicist at the University of Illinois at Urbana-Champaign.

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