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Alien Planets Revealed Preview

Preview: Season 41 Episode 1 | 30s  | Video has closed captioning.

It’s a golden age for planet hunters: NASA's Kepler mission has identified more than 3,500 potential planets orbiting stars beyond our Sun. Some of them, like a planet called Kepler-22b, might even be able to harbor life. How did we come upon this distant planet?

Aired: 01/08/14

Rating: TV-G

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Problems Playing Video? | Closed Captioning

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