The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This dating is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples. The oldest meteorites are about 4.8 billion years old so that is probably the upper limit for the Earth too. Return to the Ask the Space Scientist main page. NASA IMAGE/POETRY Education and Public Outreach program.

How Old is Earth? Age of the Earth

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The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This dating is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples. The oldest meteorites are about 4.8 billion years old so that is probably the upper limit for the Earth too. Return to the Ask the Space Scientist main page. NASA IMAGE/POETRY Education and Public Outreach program.

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