Habitable Earth-Size Planets Common Across the Universe, Study Suggests

About one in five sunlike stars observed by NASA’s planet-hunting Kepler spacecraft has an Earth-size planet in the so-called habitable zone, where liquid water — and, potentially life — could exist, according to the new study. If these results apply elsewhere in the galaxy, the nearest such planet could be just 12 light-years away.

It’s very statistical, but hey… lots of Earth-2 candidates.