Why Do Rockets Roll Before Reaching Orbit? 🚀 Explained

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***There's more on this story over on my blog, Vintage Space, at Popular Science! http://www.popsci.com/why-does-rocket-need-to-roll-going-into-orbit

***There's loads of other olde timey space to dig into on Vintage Space, too! http://www.popsci.com/blog-network/vi...

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