Neil deGrasse Tyson explains why we need to find aliens

In the video below, Neil deGrasse Tyson clarifies why finding alien life would modify everything we know about our own world.


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Neil deGrasse Tyson explains why we need to find aliens Neil deGrasse Tyson explains why we need to find aliens Reviewed by Umer Abrar on 2/14/2016 Rating: 5

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