Jan
18
2009
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How old is the Earth?

The Earth as seen by the astronauts of Apollo 17. PDNone of us were around when the Earth was formed, but scientists are in agreement that the age of the earth is 4.54 billion years, give or take 1 percent. To determine the age of the earth, scientists use a process known as radiometric dating. It is based on the fact that uranium, a naturally [more...]

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