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Oldest Known Habitable Planet Found

An inhabited planet could be as few as 13 light-years away from us. Astronomers have calculated that Kapteyn b is just the right size and temperature to have liquid water and potentially harbor life, the Daily Mail reports. Estimated at 11.5 billion years old, Kapteyn b is now the oldest known habitable exoplanet. Described in the Monthly Notices of the Royal Astronomical Society, the world is five times more massive than Earth and completes an orbit of its own sun in just 48 days.

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