Billions of Earth-Sized Planets in the Milky Way | New Kepler Estimate | NASA Space Science

Visit my website at http://www.junglejoel.com – using the latest Kepler telescope data, scientists think at least 17 percent of stars have Earth-sized planets in close orbits (orbital periods of 85 days or less. This is slightly less than the orbital period of Mercury in our solar system). Please rate and comment, thanks!
Credits: NASA Kepler; Harvard-Smithsonian Center for Astrophysics (CfA) F. Fressin (CfA) C. Pulliam & D. Aguilar (CfA)

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