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How old is Earth? Our world's surprising age, explained
One should never ask someone’s age but the Earth is so fascinating, surely we must know how old it is? Throughout history, many have come up with ideas about how old our planet is, but now science has given us a definitive answer.
Specifically, using radiometric age dating has given us the answer – and it's mucholder than you might think.
Read on to discover how old the Earth is, exactly how this was figured out, and also when the earliest form of life first appeared on our planet.
How old is Earth?
The Earth is 4.54 billion years old, give or take 50 million years.
This means that the Earth is under half the age of the Milky Way Galaxy, 11-13 billion years old,and around a third of the age of the Universe (10-15 billion years old).
How do scientists know how old the Earth is?
Scientists have been able to determine the age of the Earth using a technique called ‘radiometric dating’.
Essentially, the method allows researchers to measure the last time that the rock being dated was either melted or disturbed suffici
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