On February 2, 2011, NASA announced that its Kepler space telescope found its first Earth-size planet. In fact, it found five Earth-size planets all orbiting about one star, Kepler-11.
on 02/04/2011 – Made popular on 02/04/2011
Where the Grass is Always Redder on the Other Side
Kepler-186f is the first Earth-size planet discovered in the potentially 'habitable zone' around another star, where liquid water could exist on the planet's surface. Its star is much cooler and redder than our Sun.