Contact: Robert Sanders
University of California - Berkeley
Caption: This is an animation explaining a new analysis of data from NASA's Kepler mission that concludes that about one in five sun-like stars have Earth-size planets in their habitable zone.
Credit: Erik Petigura/UC Berkeley, Andrew Howard/UH, Geoffrey Marcy/UC Berkeley & Illumina Studios, Emeryville, Calif.
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Related news release: Astronomers answer key question: How common are habitable planets?