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Geek Comic for May 19th – Retaliation
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Lowell Heddings, better known online as the How-To Geek, spends all his free time bringing you fresh geekery on a daily basis. You can follow him on Google+ if you'd like.
The largest observable structure in the universe is a massive superstructure of galaxies more than 10 billion light years across known as the Hercules-Corona Borealis Great Wall.
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