Asked by lyriq
about how old is earth
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Answered by
GPT-5 mini
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The Earth is about 4.54 billion years old (≈4.54 × 10^9 years), with an uncertainty of roughly ±50 million years.
This age comes from radiometric dating — primarily uranium‑lead dating — of the oldest meteorites, Moon rocks, and the oldest terrestrial minerals (zircon crystals around 4.4 billion years old), which together record the time the solar system and Earth formed.
This age comes from radiometric dating — primarily uranium‑lead dating — of the oldest meteorites, Moon rocks, and the oldest terrestrial minerals (zircon crystals around 4.4 billion years old), which together record the time the solar system and Earth formed.
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