WASHINGTON — HyImpulse, a German launch vehicle developer, announced Sept. 2 it raised more than 50 million euros ($58 million) to accelerate work on small launch vehicles using hybrid propulsion.

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Jeff Foust writes about space policy, commercial space, and related topics for SpaceNews. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science...