Very old. About 4.54 Billion years old. Plus or minus one percent. That's about 40 million years of uncertainty - not much if you consider the immensity of even just a billion years.
Greg Laden provides a great summary of how we have arrived at such a large number.
Showing posts with label age of earth. Show all posts
Showing posts with label age of earth. Show all posts
Sunday, February 27, 2011
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