Astronomers have found a system, Kepler 62, with two small worlds in the habitable zone, one of which has a mass of just 1.4 earths - discu.eu

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Astronomers have found a system, Kepler 62, with two small worlds in the habitable zone, one of which has a mass of just 1.4 earths http://www.cfa.harvard.edu/news/2013/pr201311.html 358 comments 18/4/2013 science