Humans have drilled less than one-thousandth of the distance from the surface to the center of the Earth.

Name: Humans have drilled less than one-thousandth of the distance from the surface to the center of the Earth.
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Question

Quizplus · Accepted Answer

This is true. The deepest human-made hole, the Kola Superdeep Borehole in Russia, only reaches a depth of about 7.5 miles. The radius of the Earth is about 3,959 miles, so humans have only drilled about 0.19% of the way to the center.

Humans Have Drilled Less Than One-Thousandth of the Distance from the Surface