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Cosmology: Five Big Things You Need to Know

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Air Date: 04/09/2007
Run Time: 0:28:52

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Astrophysics grad student Liz Kruesi asked cosmologists for the questions they get asked by the public. She covers the five biggest in the new May edition of Astronomy magazine. From the Big Bang to our own era, you'll learn about our cozy little universe. Emily Lakdawalla explains the sometimes confusing news about water on Mars. Bruce Betts tells Mat Kaplan about the night sky and announces a new space trivia contest.

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