Dec 24, 2012 02:09 PM EST
Earth 2.0 within grasp with potential candidates just 12 lightyears away
Christmas gift for mankind: A second earth! The discovery of 5 planets, one of them having the right size and orbit to be habitable like Earth, orbiting the star Tau Ceti, which happens to be the closest sun-like star near our own solar system, is like a heavenly gift for Christmas.