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Classed as a “super-Earth,” candidate planet KOI (Kepler Object of Interest) 172.02 orbits within the habitable zone of a sun-like star. This means the planet, which has yet to be confirmed by follow-up observations, could have liquid water on its surface, thought to be essential for life.

KOI 172.02 is about 1.5 times the diameter of Earth. The planet orbits its star at a distance of 0.75 astronomical units, or about three-fourths of the distance from the Earth to the sun. The exoplanet takes about 242 Earth days to orbit its star.

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