XKCD ‘Campfire Habitable Zone’

via  the comic delivery system monikered  Randall Munroe  resident at   XKCD  !

via the comic delivery system monikered Randall Munroe resident at XKCD!

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*** This is a Security Bloggers Network syndicated blog from Infosecurity.US authored by Marc Handelman. Read the original post at: https://xkcd.com/2336/