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Kepler telescope spots a planet that seems a lot like home

NASA scientists say the Kepler space telescope may have discovered the most “Earth-like” planet yet. Circling a star about 500 light-years away, planet Kepler 186-F may be the right temperature to allow liquid water to flow on its surface. Hari Sreenivasan talks to Tom Barclay of NASA Ames Research Center about why this discovery is exciting to astronomers.
Aired: 4/17/2014 | 0:05:37