Earth / Age
4.543 billion years
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The age of Earth is estimated to be 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). ... This age may represent the age of Earth's accretion, or core formation, ...
Oct 19, 2023 · In 1862, a famous Irish physicist and mathematician, Lord Kelvin, estimated that Earth was between 20-million and 400-million years old.
Nov 14, 2023 · The Earth is thought to be about 4.54 billion years old. Along with other planets, the Earth was born in the early days of the Solar System, ...
Today, we know from radiometric dating that Earth is about 4.5 billion years old. ... Had naturalists in the 1700s and 1800s known Earth's true age, early ideas ...
Jul 9, 2007 · Ancient rocks exceeding 3.5 billion years in age are found on all of Earth's continents. ... [See Editor's Note.] These ancient rocks have been ...