The document discusses the age of the Earth, stating it to be approximately 4.54 billion years old. It provides comparisons of the Earth's age to the age of the universe, noting the Earth is about one-third as old as the universe. The document also briefly mentions the earliest geological time period of the Earth was the Hadean eon during the Precambrian eon.

1. earth age
Input interpretation:
age of the Earth
Result:
4.54 billion years
Unit conversion:
17
1.43 10 seconds
Comparisons as age:
0.33 universe age 1 universe age
Geological time in the past:
eon
Precambrian Hadean
Generated by Wolfram|Alpha (www.wolframalpha.com) on April 7, 2011 from Champaign, IL.
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