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Planet Kepler-10b transiting its host star (artist's depiction)

Planet Kepler-10b transiting its host star (artist's depiction)

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NASA / Kepler Mission / Dana Berry

Planet Kepler-10b transiting its host star (artist's depiction)
Measuring 1.4 times the size of Earth, Kepler-10b is the smallest planet ever discovered outside our solar system. Kepler-10b is of a rocky planet with a mass 4.6 times that of Earth and with an average density of 8.8 grams per cubic centimeter (which is significantly denser than Earth's 5.5).

Most NASA images are in the public domain. Reuse of this image is governed by NASA's image use policy.

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