The search for alien life is one of the most discussed in the scientific community.  And one of the best ways might be to focus on earth-like planets.  They examine the possibilities in this video:

The search for Earth-like planets is reaching a fever-pitch. Does the evidence so far help shed light on the ancient question: Is the galaxy filled with life, or is Earth just a beautiful, lonely aberration? If things dont work out on this planet Or if our itch to explore becomes unbearable at some point in the future Astronomers have recently found out what kind of galactic real estate might be available to us. Well have to develop advanced transport to land there, 20 light years away. The question right now: is it worth the trip?

Let’s find out where and how this might happen in the video on page 2

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