How the Universe Works
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SEASON 1 • EPISODE 7

How the Universe Works

"Alien Solar Systems"

Date Aired: May 24, 2010 (United States)

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Is our solar system unique? Since the first discovery of a planet orbiting another star, some 280 alien solar systems have been identified. It's only by looking at solar systems far beyond our own, that we can understand how remarkable our universe is.
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