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Artist's representation of the "habitable zone," the range of orbits where liquid water is permitted on the surface of a planet.
Artist's representation of the "habitable zone," the range of orbits where liquid water is permitted on the surface of a planet.

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    Could be billions of Earth-like planets

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Could be billions of Earth-like planets

A study using data from the Kepler telescope suggests that there could be billions of Earth-like planets in our galaxy.

Could be billions of Earth-like planets

A study using data from the Kepler telescope suggests that there could be billions of Earth-like planets in our galaxy.