![[link]](http://ponibooru.413chan.net/_images/6733226c0117931aa6df7c8d3a8e7127/7349%20-%2020%25_cooler%20math%20rainbow_dash%20science%20sonic_rainboom.jpg){kind=link}
Kaifloof 
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not active here anymore
tfw the link credit doesn't work anymore
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Description:
From source (30 July 2011):
Bronies have existed throughout our world's history, and through some of our greatest minds.
BTW, math credit for the Sonic Rainboom goes to whoever made this:[link]
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