Tag Archives: radioactive

To Date Ancient Rocks and Artifacts

Posted on October 21, 2024 by Justinc

How do scientists know how old Earth and its rocks are? Modern humans have existed for “only” about 200,000 years, and modern science has existed for only a few hundred years (heck, how do we even know how long we as a species have existed?). So, how do scientists today know how old rocks are? […] Continue reading →

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Radiometric Dating

Posted on March 22, 2021 by mwdobson3

Radiometric dating, or radioactive dating, is a method astronomers use to study a rock’s age. This method is critical in learning about the Solar System’s formation, as rocks from the Solar System can be studied to find how long ago the rock was formed and how old the Solar System is. When billions of atomsContinue reading “Radiometric Dating” Continue reading →

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Radioactive

Posted on March 20, 2013 by williamrmccormick

Many people hear the word radioactive and immediately think of either radiation from nuclear power plants or bombs, or they think of turning into a superhero. So they generally associate the idea of radiation and humans as an always negative thing. However, what they may not realize is that the human body itself emits radiation. […] Continue reading →

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