CBS News | Kepler closing in on Earth-like planets CBS News Slowly but surely closing in on an answer to a fundamental question -- how common are Earth-like planets orbiting sun-like stars? -- NASA's Kepler space telescope has discovered the smallest worlds yet found orbiting in or near the habitable zones of two ... NASA discovers three planets that could support life Three More Exoplanets Discovered In The Habitable Zone, Including The ... NASA's Kepler discovers three potentially habitable planets - Engadget |

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