What keeps the Earth cooking?


Related images(click to enlarge) What spreads the sea floors and moves the continents? What melts iron in the outer core and enables the Earth‘s magnetic field? Heat. Geologists have used temperature measurements from more than…

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When matter melts


Related images (click to enlarge) In its infancy, when the universe was a few millionths of a second old, the elemental constituents of matter moved freely in a hot, dense soup of quarks and gluons….

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