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Challenging core belief: Have we misunderstood how Earth’s solid center formed?

It is widely accepted that the Earth’s inner core formed about a billion years ago when a solid, super-hot iron nugget spontaneously began to crystallize inside a 4,200-mile-wide ball of liquid metal at the planet’s center.

The Earths interior [Credit: University of Chicago]One problem: That’s not possible-or, at least, has never been easily explained-according to a new paper published in Earth and Planetary Science Letters from a…

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via The Archaeology News Network, http://archaeologynewsnetwork.blogspot.com/2018/02/challenging-core-belief-have-we.html

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