Scientists Detect Signs of a Hidden Structure Inside Earth’s Core – ScienceAlert

While most of us take the ground beneath our feet for granted, written within its complex layers, like pages of a book, is Earth’s history. Our history.
Now researchers have found more evidence for a whole new chapter deep within Earth’s past – Earth’s inner core appears to have another even more inner core within it.
“Traditionally we’ve been taught the Earth has four main layers: the crust, the mantle, the outer core and the inner core,” explained Australian National University geophysicist Joanne…

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