Aliens?

Look: 9 exoplanets that hold potential for alien life

NOAA/NASA JPL/Caltech

NASA/JPL Caltech

Last week, NASA announced a new milestone for astronomy: more than 5000 exoplanets have been cataloged and confirmed in the past 30 years.

The sheer number of planets beyond the Solar System raises the possibility that we may one day find life beyond Earth.

However, some planets are more likely to be habitable than others.

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