Scientists have discovered Kepler-186f, the first Earth-size alien planet in the habitable zone of its host star. The so-called 'Earth cousin' just might have liquid water and the right conditions to support life.
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Scientists have discovered Kepler-186f, the first Earth-size alien planet in the habitable zone of its host star. The so-called 'Earth cousin' just might have liquid water and the right conditions to support life.