Gliese581g.This Rockey world was announced in September 2010.Gliese 581g which is locates just 20light years away,is likely two to three times as massive as earth ans zips around its parents star every 30days or so.This orbit places the planet squarely in its star's"habitable zone"-that just right range of distances where liquid water,and perhaps life as we know it,could exist.
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