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According to a new study, the Earth's core could have stopped spinning or might be turning backwards.
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Our planet's core is composed of an outer layer made of liquid metal and an inner core made of solid metal. It is approximately 70% the size of the Moon.
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The consensus is that the North Pole views of the core show the core rotating counterclockwise, just like the rest on planet Earth.
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Researchers at Peking University, China, concluded that the core's spin stopped in 2009 and was then reversed.
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“We think that the core is, relative to the surface of the Earth, rotating in one direction and then the other, like a swing,” Xiaodong Song and Yi Yang, the study authors, told reporters.
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They added that a complete swing cycle takes about 70 years.
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