Uploaded January 2011 | Updated September 2026, 5 days ago

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Kepler-10b is an Earth-size exoplanet

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Video and narration: Credit: NASA/Kepler Mission/Dana Berry

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 so-called exoplanet is based on more than eight months of data collected by the spacecraft from May 2009 to early January 2010. This video is narrated by Kepler Deputy Science Team Lead Natalie Batalha.