Are We Alone in This Universe?

Are we alone in the universe or is there life out there waiting to be discovered? NASA is getting ready to launch the Kepler telescope on an ambitious, first-of-its-kind mission: to search for Earth-size planets in our galaxy, orbiting stars at the right distances to have water on their surface. These planets are too small and too difficult to be seen with past telescopes. But they are precisely the kinds of planets on which life could exist. Kepler is NASA's $600 million telescope,...Full Story
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