24303352 story A Third of Sun-Like Stars May Have Warm Earth Analogs 188 Posted by timothy on Thursday September 29, 2011 @12:06PM from the where-do-you-think-the-off-world-colonies-are? dept. The Bad Astronomer writes "An astronomer studying data from the first 136 days of the Kepler observatory missions has calculated that as many as 34% of all Sun-like stars (abstract) may have Earth-sized planets orbiting in their habitable zones, where conditions are right for life as we know it. I have some reservations with his numbers, but they do match other studies. There may be 15 billion warm, Earth-sized worlds in our galaxy alone."