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View Full Version : Astronomy Cast Episode 247: The Ages of Things



Fraser
2012-Jan-09, 11:30 PM
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. This episode of Astronomy Cast was [...]

More... (http://www.universetoday.com/92485/astronomy-cast-episode-247-the-ages-of-things/)