Thursday, November 24, 2011

Why Is This Surprising?

Things that make you go, "Hmmmmmm."  Scientists have done some experimental calculating and are now concluding that the outer portion of the Earth's core is not a mixture of iron and oxygen as they had postulated, but probably contains quite a lot of silicon. They are surprised, but I'm wondering why, exactly. Haven't they ever studied the composition of lava?

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