They have investigated meteorite and moon rocks, none of which have undergone the rock cycle's alterations. On such rocks, the same radiometric dating methods have been applied.
What age do geologists believe the Earth to be?
With a 50 million-year margin of error, the age of the Earth is calculated to be 540 million years. In order to radiometrically date the oldest rocks, scientists have combed the whole planet. They found rocks in northwest Canada that are practices and better billion years old.
This same Earth is 4.5 billion years old, but how can we know this?
Scientists have determined that Jupiter is 4.54 billion years old by analyzing the rocks in its ever-changing crust as well as the materials in Humanity's neighbours, such as the moon and passing meteorites.
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