Talk:1677: Contrails

Explain xkcd: It's 'cause you're dumb.
Revision as of 10:58, 6 May 2016 by 141.101.104.20 (talk)
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Aside: worst name ever for university department: Astronomy and Cosmology - it's almost as if they want people to make the association... 141.101.104.20 10:58, 6 May 2016 (UTC)