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New planets 'could host life'

NASA says three new planets that could host life have been discovered. The "super Earth-sized" worlds were found in the habitable zone outside the solar system by NASA's Kepler satellite.

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'Potentially habitable planets' are close to Earth in size

NASA scientists said the Kepler-62e and Kepler-62f planets were the first potentially habitable worlds discovered that are less than twice the size of Earth:

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