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  2. How Old Is Earth and How Did Scientists Figure It Out?

    science.howstuffworks.com/how-old-is-earth.htm

    According to the Bible, the Earth is not the same age as what science says. It's often interpreted to be significantly younger than what scientific evidence suggests, with some religious interpretations proposing a shorter timeline for Earth's history.

  3. Age of Earth - Wikipedia

    en.wikipedia.org/wiki/Age_of_Earth

    The age of Earth is estimated to be 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%).[1][2][3][4] This age may represent the age of Earth 's accretion, or core formation, or of the material from which Earth formed. [2] This dating is based on evidence from radiometric age-dating of meteorite [5] material and is consistent with the ...

  4. How Science Figured Out the Age of Earth - Scientific American

    www.scientificamerican.com/article/how-science...

    For centuries scholars sought to determine Earth’s age, but the answer had to wait for careful geologic observation, isotopic analyses of the elements and an understanding of radioactive decay.

  5. How Old Is the Earth? How Do We Know? - Science Notes and ...

    sciencenotes.org/how-old-is-the-earth-how-do-we-know

    Scientists estimate the age of the Earth is approximately 4.54 billion years, plus or minus 50 million years. This estimate is for the age of the Earth’s accretion into a planet with a core and spherical shape.

  6. How old is planet Earth? - Live Science

    www.livescience.com/.../how-old-is-planet-earth

    (New research shows that number may even be bigger, as long ago as 4.2 billion years!) We owe our knowledge of this timeline to the literal ground we stand on; rocks are the key to...

  7. How Old Is Earth? | Britannica

    www.britannica.com/topic/How-Old-Is-Earth

    In numerical terms, the best estimate of Earth’s age so far is that it is close to 4.6 billion years old. But what does that mean exactly? If one uses a human lifetime of 75 years as a measure, the time between Earth’s formation and today has taken more than 61 million human lifetimes!

  8. How do we know how old Earth is? - Live Science

    www.livescience.com/planet-earth/how-do-we-know...

    Earth is roughly 4.54 billion years old. In that time, it has seen continents form and disappear, ice caps expand and retreat, and life evolve from single-celled organisms into blue...