The Kepler mission has discovered the first super-Earth in the habitable zone of a distant Sun-like star, according to NASA. The newly found planet Kepler-22b is about 2.4 times the radius of Earth. Scientists don’t know if Kepler-22b has a predominantly rocky, gaseous or liquid composition, but its discovery is a step closer to finding Earth-like planets. Artist's conception of Kepler-22b (NASA) “This is a major milestone on the road...
