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What is the center of the earth?
asked Dec 11, 2010 by triuser (1,746 points)

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The inner core of the earth is a hot, dense solid sphere, composed primarily of iron, with some nickel. Its diameter is about 2400 km, about 19% of the earth's diameter. There is some evidence  that the core is in hexagonal crystalline form, possibly one giant crystal!
answered Jan 2, 2011 by trianswer (22,754 points)
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It is a primarily solid sphere about in radius, only about 70% that of the Moon. It is believed to consist of an iron-nickel alloy, and may have a temperature similar to the Sun's surface.
answered Jan 5, 2011 by trianswer (22,754 points)

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