The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...
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The geophysical challenge: Why digging right through Earth’s layers remains an impossible dreamThat’s the antipode, or opposite point on Earth’s surface, from my town. But I only had a garden spade to move the earth.
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The biggest-ever sample of core material from Earth's mantle could have valuable clues into the origins of lifeThe mantle is Earth's largest layer of rocks. However ... This happened on Expedition 399 of a project called the IODP (International Ocean Discovery Program). As well as offering new insights ...
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