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	Podcast:		Lawrence Livermore National Lab (Audio)
	Episode:		Comets and the Stardust Mission: What’s in our Solar System’s Freezer?
	Category:		Science & Medicine
	Duration:		00:44:15
	Publish Date:		2008-05-19 16:00:00
	Description:		The occasional appearance of comets has awed humans throughout history. But how much do we really know about comets? Did a comet kill the dinosaurs? And, what can comets tell us about our own ancient history? With comet dust from NASA’s Stardust mission, scientists like Hope Ishii, a Research Scientist at Lawrence Livermore National Laboratory, are beginning to answer these questions. She and high school teacher Tom Shefler look at how comets formed, their role in the Earth's history and the clues about what happened over 4 billion years ago. Series: "Field Trip at the Lab: Science on Saturday" [Science] [Show ID: 14492]
	Total Play:		0