"NASA will host a news teleconference at 9 a.m. PDT (12 p.m. EDT) Thursday, July 23 to announce new discoveries made by its planet-hunting mission, the Kepler Space Telescope. The teleconference audio and visuals will be streamed live at: http://www.nasa.gov/newsaudio"
Kepler Finds 12 Earth-sized Worlds In Stellar Habitable Zones, SETI Institute
"The new catalog includes 12 candidates that are less than twice Earth's diameter, orbiting in the so-called habitable zone of their star. This zone is the range of distances at which the energy flux from the star would permit liquid water to exist on the planet's surface. Of these candidates, Kepler 452b is the first to be confirmed as a planet. At a distance of 1,400 light-years, Kepler 452b accompanies a star whose characteristics are very similar to the Sun: it is 4 percent more massive and 10 percent brighter. Kepler 452b orbits its star at the same distance as Earth orbits the Sun."
"The newly discovered Kepler-452b is the smallest planet to date discovered orbiting in the habitable zone -- the area around a star where liquid water could pool on the surface of an orbiting planet -- of a G2-type star, like our sun."