Some people call these habitable planets, which of course we have no idea if they are," said Stephen Kane, another member of the team.
"We simply know that they are in the habitable zone, and that is the best place to start looking for habitable planets," he added.
"However, it is also slightly larger than the Earth, and so the hope would be that this would result in a thicker atmosphere that would provide extra insulation."
The Kepler space telescope launched in March 2009 and is used to observe some 150,000 stars, a few thousand of which have been found to have possible planets.
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