Astronomy Cast - Episode 247: The Ages of Things

By Fraser Cain - January 9, 2012 at 11:28 PM UTC | Cosmology

This is going to be one of the "how we know what we know" kind of shows. How do scientist determine the age of things? How do we know the age of everything from stone tools, to the age of the Earth, to the age of the very Universe.

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Fraser Cain

Fraser Cain

Fraser Cain is the publisher of Universe Today, founding the website in March 1999. He's also the co-host of Astronomy Cast.