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'Innermost': Earth has another layer in its core, scientists discover

Earth's inner, inner core found

Scientists have discovered yet another layer deep inside the core of the Earth, a new study suggests.

"Traditionally we've been taught the Earth has four main layers: the crust, the mantle, the outer core and the inner core," said Australian National University geophysicist and study lead author Joanne Stephenson.

Now a team of researchers from the university has confirmed the existence of what it's calling the Earth's "innermost inner core."

To study Earth's core, the team used a search algorithm to trawl through and match thousands of models of the inner core with observed data across many decades about how long seismic waves take to travel through the Earth, ScienceAlert reported.


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