Our World: Stardust

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Uploaded by on Aug 4, 2009

Visit a lab at NASA's Johnson Space Center where scientists study meteorites. Learn how aerogel, the lightest material in the world helped capture pieces of a comet and return the comet dust to Earth. See what scientists can learn about our universe from these tiny particles.

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  • is this a discovery Chanel for kids? still ok for a time killler

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