Dennis Overbye, in the New York Times: "Astronomers reported that there could be as many as 40 billion habitable Earth-size planets in the galaxy, based on a new analysis of data from NASA's Kepler spacecraft."
Dennis Overbye, in the New York Times: "Astronomers reported that there could be as many as 40 billion habitable Earth-size planets in the galaxy, based on a new analysis of data from NASA's Kepler spacecraft."