How was the age of the earth determined?

Study of rocks, fossils and radioactive dating

Explanation:

The determination of age of earth is a prominent debatable topic. Since ages several methods have been used to reach an approximate number which depicts the age of earth. Of all the methods adopted till date, study of rock age, fossil deposits and radioactive dating are the best.  

Radiometric dating was done on Iron meteorite collected from Canyon Diablo remains which gave the age of earth some billion years old.

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