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ULA's Vulcan is replacing the company's workhorse Atlas 5 rocket and the already-retired Delta 4 family of launchers.
A troubled European rocket critical to the continent’s goal of reducing its reliance on Elon Musk’s SpaceX thundered off a ...
ULA's Vulcan is replacing the company's workhorse Atlas 5 rocket and the already-retired Delta 4 family of launchers.
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