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The age of Earth is estimated to be 4.54 ± 0.05 billion years (4.54 × 10 9 years ± 1%). This age may represent the age of Earth's accretion, or core formation, or of the material from which Earth formed.
19 ott 2023 · Towering mountains, deep oceans, vast continents, and sprawling glaciers—they make Earth what it is today. Even more impressive, by some people’s standards, is the age of Earth. Scientists have calculated the age of our planet to be approximately 4.5 billion years.
20 ott 2013 · How Science Figured Out the Age of Earth. For centuries scholars sought to determine Earth’s age, but the answer had to wait for careful geologic observation, isotopic analyses of the...
Based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old. But it could certainly be older.
14 nov 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, which first started forming about 4.6 billion years ago.
During the 19th century, the debate regarding Earth's age was renewed, with geologists estimating ages based on denudation rates and sedimentary thicknesses or ocean chemistry, and physicists determining ages for the cooling of the Earth or the Sun using basic thermodynamics or orbital physics.
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!
