NASA's Kepler Mission Discovers Its First Rocky Planet

PASADENA, Calif. -- NASA's Kepler mission confirmed the discovery of its first rocky planet, named Kepler-10b. Measuring 1.4 times the size of Earth, it is the smallest planet ever discovered outside our solar system.

The discovery of this planet, called an exoplanet, is based on more than eight months of data collected by the spacecraft from May 2009 to early January 2010.



"All of Kepler's best capabilities have converged to yield the first solid evidence of a rocky planet orbiting a [...]

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