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NASA History Office on Twitter: "65 years after we 1st broke the sound barrier, Felix Baumgartner's unpowered descent from the stratosphere reached Mach 1 #OTD in 2012. https://t.co/VCGst9GGkh" / Twitter
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Red Bull Stratos - Skydiver Felix Baumgartner breaks sound barrier with world record free fall - YouTube
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Skydiver Felix Baumgartner breaking sound barrier for Red Bull Stratos | Felix baumgartner, Space flight, Sound barrier
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Felix Baumgartner's supersonic jump: From start to finish, a nerve-racking, exciting feat to behold - The Washington Post
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