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?
Problems Playing Video? | Closed Captioning