Is Earth the only planet supporting life? Where are the aliens hiding?
Watch More: What Will Happen When The Sun Dies? ►►►► https://www.youtube.com/watch?v=GvBdm...

Written by Julian Huguet:   / jhug00  

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Sources:
http://www.popsci.com/science/article...
http://www.seti.org/drakeequation
http://topdocumentaryfilms.com/search...
http://www.ne.anl.gov/About/cp1pione...
https://www.grc.nasa.gov/www/k12/Num...
http://blog.wolframalpha.com/2010/09/...
http://www.seti.org/setiinstitute/pr...
http://www.universetoday.com/21822/ag...
http://www.seti.org/setiinstitute/pr...
http://www.planetary.org/blogs/emily...
http://zidbits.com/2011/07/howfarha...

Music Credit: http://www.bensound.com/royaltyfree...