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Podcast

April 10, 2009

An infrared image of the Milky Way's galactic core, where giant stars are forming. Scientists use several methods to calculate the distance of stars. (NASA/ESA Hubble - Q.D. Lang & JPL Spitzer - S. Stolovy)

How to calculate the distance of stars, new uses for old rocks in the fight against global warming, and why video games might actually be good for your vision.

Transcript

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