In Pictures: NASA - Kepler's most excellent space discoveries

NASA’s Kepler space telescope continues to amaze

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Astronomers recently discovered the first Earth-sized planet outside the solar system that has a rocky composition like that of Earth. Kepler-78b whizzes around its host star every 8.5 hours, making it a blazing inferno and not suitable for life as we know it.

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In Pictures: NASA - Kepler's most excellent space discoveries

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