RT @universetoday: More livable than Earth? New index sizes up the habitability of alien exoplanets universetoday.com/122723/more-li… http://t.co/9jBFxMdL7o
RT @universetoday: More livable than Earth? New index sizes up the habitability of alien exoplanets universetoday.com/122723/more-li… http://t.co/9jBFxMdL7o