MOFFETT FIELD, CA - DECEMBER 05: Jill Tarter, director of the Center for SETI Research looks at a graphic showing the newly discovered planet Kepler-22b during a news conference at the NASA Ames ... more 
MOFFETT FIELD, CA - DECEMBER 05: Jill Tarter, director of the Center for SETI Research looks at a graphic showing the newly discovered planet Kepler-22b during a news conference at the NASA Ames Research Center on December 5, 2011 in Moffett Field, California. Scientsts with NASA's Kepler mission announced that they discoverd a planet in the "habitable zone" where water could exist on the planet's surface. The newly confirmed planet is being called Kepler-22b and is approximately 2.4 times the radius of earth and orbits a star similar to the earth's sun. (Photo by Justin Sullivan/Getty Images) less 
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Getty Images | Photo By Justin Sullivan / Getty Images
Mon, Dec 5, 2011 1:42 PM EST