NASA Confirms Discovery of the most Earth-like Planet Yet

It may have a radius about 2.4 times that of our home planet, but NASA scientists have confirmed that Kepler-22b — depicted in the artist's conception up top — is the first planet we've ever confirmed orbits within the so-called "habitable zone" of a Sun-like star, making it the most Earth-like planet we've yet… »12/05/11 4:01pm12/05/11 4:01pm