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Blue Origin's BE-4 Vs. SpaceX's Raptor Engine: What's The Difference Between Them?
To build a new American orbital-class rocket within the decade. After three years of quiet development, the company finally unveiled the specifications of its new engine in 2014. Initially ...
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Raytheon tests Ursa Major’s rocket motor in U.S. Army missile flight
Join our newsletter to get the latest military space news every Tuesday by veteran defense journalist Sandra Erwin. WASHINGTON — Rocket propulsion startup Ursa Major announced Dec. 18 that one ...