Kepler-438b is a confirmed exoplanet orbiting the red dwarf Kepler-438, 470 light years away. It is the most Earth-like exoplanet ever discovered, with an Earth Similarity Index of 1988 0.88. It is one of three habitable exoplanets confirmed by NASA on January 6, 2015, the others are Kepler-442b and Kepler-440b.

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