NASA’s Kepler space telescope has spotted the most Earth-like alien planet yet discovered — a world called Kepler 452b that’s just slightly bigger than our own and orbits a sunlike star at about the same distance Earth circles the sun.

“This is the first possibly rocky, habitable planet around a solar-type star,” Jeff Coughlin, Kepler research scientist at the Search for Extraterrestrial Intelligence (SETI) Institute in Mountain View, California, said during a news briefing today (July 23).

http://www.space.com/30026-earth-twin-kepler-452b-exoplanet-discovery.html