sputnik shook the nation 60 years ago. that could happen again - discu.eu

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Sputnik Shook the Nation 60 Years Ago. That Could Happen Again https://www.nbcnews.com/mach/science/sputnik-shook-nation-60-years-ago-could-happen-again-ncna807381 5 comments 10/10/2017 space