Kepler-62e is one of thousands of exoplanet candidates discovered by the Kepler space telescope, whose primary mission between 2009 and 2013 was to seek out exoplanets (especially Earth-like ones) outside of the solar system
http://www.space.com/24129-kepler-62e.html
Kepler-62e is an exoplanet believed to be a water world, orbiting at about the equivalent distance of Mercury in its planetary system some 1,200 light-years from Earth. The planet is an exciting find to exoplanet researchers because it is close in size to Earth, and also orbits in the habitable region of its star (which is smaller and dimmer than that of Earth's).
in our galaxy alone there are thousands, if not hundreds of thousands of planets, in the billions of stars', "Goldielocks Zone", not too hot, not too cool, just right.
