Astrophysicist and official science spokesman Neil deGrasse Tyson recently took time out from appearing in Facebook image macros to make a series of tweets criticizing the accuracy of space disaster film Gravity. Fans of the falling-through-space-junk movie got pretty upset with Tyson, but the science maven was undeterred. In fact, Tyson doubled down and tweeted out a number of factual errors in Robert Rodriguez's Machete Kills.
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